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产品型号LTC1992-2HMS8的Datasheet PDF文件预览

LTC1992 Family  
Low Power, Fully Differential  
Input/Output  
Amplifier/Driver Family  
U
FEATURES  
DESCRIPTIO  
The LTC®1992 product family consists of five fully differ-  
ential, low power amplifiers. The LTC1992 is an uncon-  
strained fully differential amplifier. The LTC1992-1,  
LTC1992-2, LTC1992-5 and LTC1992-10 are fixed gain  
blocks (with gains of 1, 2, 5 and 10 respectively) featuring  
precision on-chip resistors for accurate and ultrastable  
gain. All of the LTC1992 parts have a separate internal  
common mode feedback path for outstanding output  
phase balancing and reduced second order harmonics.  
The VOCM pin sets the output common mode level inde-  
pendent of the input common mode level. This feature  
makes level shifting of signals easy.  
Adjustable Gain and Fixed Gain Blocks of 1, 2, 5  
and 10  
±0.3% (Max) Gain Error from –40°C to 85°C  
3.5ppm/°C Gain Temperature Coefficient  
5ppm Gain Long Term Stability  
Fully Differential Input and Output  
CLOAD Stable up to 10,000pF  
Adjustable Output Common Mode Voltage  
Rail-to-Rail Output Swing  
Low Supply Current: 1mA (Max)  
High Output Current: 10mA (Min)  
Specified on a Single 2.7V to ±5V Supply  
DC Offset Voltage <2.5mV (Max)  
Available in 8-Lead MSOP Package  
The amplifiers’ differential inputs operate with signals  
ranging from rail-to-rail with a common mode level from  
the negative supply up to 1.3V from the positive supply.  
The differential input DC offset is typically 250µV. The rail-  
to-rail outputs sink and source 10mA. The LTC1992 is  
stable for all capacitive loads up to 10,000pF.  
U
APPLICATIO S  
Differential Driver/Receiver  
Differential Amplification  
The LTC1992 can be used in single supply applications  
with supply voltages as low as 2.7V. It can also be used  
with dual supplies up to ±5V. The LTC1992 is available in  
an 8-pin MSOP package.  
Single-Ended to Differential Conversion  
Level Shifting  
Trimmed Phase Response for Multichannel Systems  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
U
TYPICAL APPLICATIO  
Single-Supply, Single-Ended to Differential Conversion  
10k  
5V  
5V  
5V  
V
3
IN  
0V  
5V  
2.5V  
0V  
(5V/DIV)  
10k  
4
1
7
V
IN  
+
MID  
0V  
–5V  
5V  
V
+OUT  
(2V/DIV)  
–OUT  
LTC1992  
–5V  
2
8
V
OCM  
5V  
2.5V  
0V  
10k  
+
6
5
0.01µF  
0V  
OUTPUT SIGNAL  
FROM A  
SINGLE-SUPPLY SYSTEM  
INPUT SIGNAL  
FROM A  
±5V SYSTEM  
10k  
1992 TA01b  
1992 TA01a  
1992f  
1
LTC1992 Family  
W W  
U W  
ABSOLUTE AXI U RATI GS  
(Note 1)  
Total Supply Voltage (+VS to –VS) .......................... 12V  
Maximum Voltage  
Specified Temperature Range (Note 6)  
LTC1992CMS8/LTC1992-XCMS8/  
on any Pin .......... (–VS – 0.3V) VPIN (+VS + 0.3V)  
Output Short-Circuit Duration (Note 3)............ Indefinite  
Operating Temperature Range (Note 5)  
LTC1992IMS8/LTC1992-XIMS8 ..........–40°C to 85°C  
LTC1992HMS8/LTC1992-XHMS8 .....–40°C to 125°C  
Storage Temperature Range ................ – 65°C to 150°C  
Lead Temperature (Soldering, 10 sec).................. 300°C  
LTC1992CMS8/LTC1992-XCMS8/  
LTC1992IMS8/LTC1992-XIMS8 ..........–40°C to 85°C  
LTC1992HMS8/LTC1992-XHMS8 .....–40°C to 125°C  
U W  
U
PACKAGE/ORDER I FOR ATIO  
TOP VIEW  
TOP VIEW  
–IN  
1
2
3
4
8 +IN  
7 V  
–IN  
1
2
3
4
8 +IN  
7 V  
V
V
OCM  
MID  
OCM  
MID  
+
+
6 –V  
+V  
S
6 –V  
+V  
S
S
S
+
+
5 –OUT  
+OUT  
5 –OUT  
+OUT  
MS8 PACKAGE  
8-LEAD PLASTIC MSOP  
MS8 PACKAGE  
8-LEAD PLASTIC MSOP  
TJMAX = 150°C, θJA = 250°C/W  
TJMAX = 150°C, θJA = 250°C/W  
ORDER PART  
NUMBER  
MS8 PART  
MARKING  
ORDER PART  
NUMBER  
MS8 PART  
MARKING  
LTYU  
LTZC  
LTAGR  
LTC1992CMS8  
LTC1992IMS8  
LTC1992HMS8  
LTC1992-1CMS8  
LTC1992-1IMS8  
LTC1992-1HMS8  
LTC1992-2CMS8  
LTC1992-2IMS8  
LTC1992-2HMS8  
LTC1992-5CMS8  
LTC1992-5IMS8  
LTC1992-5HMS8  
LTC1992-10CMS8  
LTC1992-10IMS8  
LTC1992-10HMS8  
LTACJ  
LTACM  
LTAFZ  
LTYV  
LTZD  
LTAGA  
LTACK  
LTACN  
LTAJH  
LTACL  
LTACP  
LTAJJ  
Consult LTC Marketing for parts specified with wider operating temperature ranges.  
1992f  
2
LTC1992 Family  
ELECTRICAL CHARACTERISTICS  
The denotes specifications which apply over the full operating  
temperature range, otherwise specifications are at TA = 25°C. +VS = 5V, –VS = 0V, VINCM = VOUTCM = VOCM = 2.5V, unless otherwise  
noted. VOCM is the voltage on the VOCM pin. VOUTCM is defined as (+VOUT + –VOUT)/2. VINCM is defined as (+VIN + –VIN)/2. VINDIFF is  
defined as (+VIN – –VIN). VOUTDIFF is defined as (+VOUT – –VOUT). Specifications applicable to all parts in the LTC1992 family.  
ALL C AND I GRADE  
ALL H GRADE  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN  
TYP  
MAX  
MIN  
TYP  
MAX  
UNITS  
V
Supply Voltage Range  
Supply Current  
2.7  
11  
2.7  
11  
V
S
I
V = 2.7V to 5V  
0.65  
0.75  
0.7  
1.0  
1.2  
1.2  
1.5  
0.65  
0.8  
0.7  
0.9  
1.0  
1.5  
1.2  
1.8  
mA  
mA  
mA  
mA  
S
S
V = ±5V  
S
0.8  
V
Differential Offset Voltage  
(Input Referred) (Note 7)  
V = 2.7V  
±0.25 ±2.5  
±0.25 ±2.5  
±0.25 ±2.5  
±0.25  
±0.25  
±0.25  
±4  
±4  
±4  
mV  
mV  
mV  
OSDIFF  
S
V = 5V  
S
V = ±5V  
S
V  
OSDIFF  
/T Differential Offset Voltage Drift  
V = 2.7V  
10  
10  
10  
10  
10  
10  
µV/°C  
µV/°C  
µV/°C  
S
(Input Referred) (Note 7)  
V = 5V  
S
V = ±5V  
S
PSRR  
Power Supply Rejection Ratio  
(Input Referred) (Note 7)  
V = 2.7V to ±5V  
S
75  
80  
72  
80  
dB  
G
CM  
Common Mode Gain(V  
/V  
)
1
±0.1  
–85  
1
OUTCM OCM  
Common Mode Gain Error  
Output Balance (V /(V  
±0.3  
–60  
±0.1 ±0.35  
–85  
%
dB  
) V = –2V to +2V  
OUTDIFF  
–60  
OUTCM  
OUTDIFF  
V
Common Mode Offset Voltage  
(V – V  
V = 2.7V  
±0.5  
±1  
±2  
±12  
±15  
±18  
±0.5  
±1  
±2  
±15  
±17  
±20  
mV  
mV  
mV  
OSCM  
S
)
V = 5V  
OUTCM  
OCM  
S
V = ±5V  
S
V  
OSCM  
/T  
Common Mode Offset Voltage Drift  
V = 2.7V  
10  
10  
10  
10  
10  
10  
µV/°C  
µV/°C  
µV/°C  
S
V = 5V  
S
V = ±5V  
S
V
Output Signal Common Mode Range  
(–V )+0.5V  
(+V )–1.3V (–V )+0.5V  
(+V )–1.3V  
V
OUTCMR  
S
S
S
S
(Voltage Range for the V  
Pin)  
OCM  
R
Input Resistance, V  
Pin  
500  
500  
±2  
MΩ  
pA  
V
INVOCM  
OCM  
I
Input Bias Current, V  
Pin  
V = 2.7V to ±5V  
±2  
BVOCM  
OCM  
S
V
V
Voltage at the V  
Pin  
2.44  
2.50  
2.56  
2.43  
2.50  
2.57  
MID  
OUT  
MID  
Output Voltage, High  
(Note 2)  
V = 2.7V, Load = 10k  
2.60  
2.50  
2.29  
2.69  
2.61  
2.52  
2.60  
2.50  
2.29  
2.69  
2.61  
2.52  
V
V
V
S
V = 2.7V, Load = 5mA  
S
V = 2.7V,Load = 10mA  
S
Output Voltage, Low  
(Note 2)  
V = 2.7V, Load = 10k  
0.02  
0.10  
0.20  
0.10  
0.25  
0.35  
0.02  
0.10  
0.20  
0.10  
0.25  
0.41  
V
V
V
S
V = 2.7V, Load = 5mA  
S
V = 2.7V, Load = 10mA  
S
Output Voltage, High  
(Note 2)  
V = 5V, Load = 10k  
4.90  
4.85  
4.75  
4.99  
4.90  
4.81  
4.90  
4.80  
4.70  
4.99  
4.90  
4.81  
V
V
V
S
V = 5V, Load = 5mA  
S
V = 5V, Load = 10mA  
S
Output Voltage, Low  
(Note 2)  
V = 5V, Load = 10k  
0.02  
0.10  
0.20  
0.10  
0.25  
0.35  
0.02  
0.10  
0.20  
0.10  
0.30  
0.42  
V
V
V
S
V = 5V, Load = 5mA  
S
V = 5V, Load = 10mA  
S
Output Voltage, High  
(Note 2)  
V = ±5V, Load = 10k  
4.90  
4.85  
4.65  
4.99  
4.89  
4.80  
4.85  
4.80  
4.60  
4.99  
4.89  
4.80  
V
V
V
S
V = ±5V, Load = 5mA  
S
V = ±5V, Load = 10mA  
S
Output Voltage, Low  
(Note 2)  
V = ±5V, Load = 10k  
4.99 –4.90  
4.90 –4.75  
4.80 –4.65  
–4.98 –4.85  
–4.90 –4.75  
–4.80 –4.55  
V
V
V
S
V = ±5V, Load = 5mA  
S
V = ±5V, Load = 10mA  
S
1992f  
3
LTC1992 Family  
ELECTRICAL CHARACTERISTICS  
The denotes specifications which apply over the full operating  
temperature range, otherwise specifications are at TA = 25°C. +VS = 5V, –VS = 0V, VINCM = VOUTCM = VOCM = 2.5V, unless otherwise  
noted. VOCM is the voltage on the VOCM pin. VOUTCM is defined as (+VOUT + –VOUT)/2. VINCM is defined as (+VIN + –VIN)/2. VINDIFF is  
defined as (+VIN – –VIN). VOUTDIFF is defined as (+VOUT – –VOUT). Specifications applicable to all parts in the LTC1992 family.  
ALL C AND I GRADE  
ALL H GRADE  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN  
TYP  
MAX  
MIN  
TYP  
MAX  
UNITS  
I
Output Short-Circuit Current  
Sourcing (Notes 2,3)  
V = 2.7V, V  
= 1.35V  
= 2.5V  
= 0V  
20  
20  
20  
30  
30  
30  
20  
20  
20  
30  
30  
30  
mA  
mA  
mA  
SC  
S
OUT  
V = 5V, V  
S
OUT  
V = ±5V, V  
S
OUT  
Output Short-Circuit Current Sinking V = 2.7V, V  
=1.35V  
OUT  
= 2.5V  
13  
13  
13  
30  
30  
30  
13  
13  
13  
30  
30  
30  
mA  
mA  
mA  
S
(Notes 2,3)  
V = 5V, V  
V = ±5V, V  
S
OUT  
= 0V  
OUT  
S
A
Large-Signal Voltage Gain  
80  
80  
dB  
VOL  
The denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.  
+VS = 5V, –VS = 0V, VINCM = VOUTCM = VOCM = 2.5V, unless otherwise noted. VOCM is the voltage on the VOCM pin. VOUTCM is defined as  
(+VOUT + –VOUT)/2. VINCM is defined as (+VIN + –VIN)/2. VINDIFF is defined as (+VIN – –VIN). VOUTDIFF is defined as (+VOUT – –VOUT).  
Specifications applicable to the LTC1992 only.  
LTC1992CMS8  
LTC1992ISM8  
LTC1992HMS8  
SYMBOL  
PARAMETER  
CONDITIONS  
V = 2.7V to ±5V  
MIN  
TYP  
MAX  
MIN  
TYP  
MAX  
UNITS  
pA  
I
I
Input Bias Current  
Input Offset Current  
Input Resistance  
Input Capacitance  
2
250  
100  
2
400  
150  
B
S
V = 2.7V to ±5V  
S
0.1  
500  
3
0.1  
500  
3
pA  
OS  
R
IN  
MΩ  
pF  
C
IN  
e
Input Referred Noise Voltage Density f = 1kHz  
35  
1
35  
1
nV/Hz  
fA/Hz  
V
n
i
Input Noise Current Density  
f = 1kHz  
n
V
Input Signal Common Mode Range  
(–V )– 0.1V (+V )– 1.3V (–V )– 0.1V (+V )– 1.3V  
INCMR  
S
S
S
S
CMRR  
Common Mode Rejection Ratio  
(Input Referred)  
V
= –0.1V to 3.7V  
69  
90  
69  
90  
dB  
INCM  
SR  
Slew Rate (Note 4)  
0.5  
1.5  
0.5  
3.0  
1.5  
3.2  
V/µs  
GBW  
Gain-Bandwidth Product  
T = 25°C  
3.0  
2.5  
1.9  
3.2  
3.0  
3.5  
4.0  
4.0  
3.5  
4.0  
MHz  
MHz  
MHz  
A
(f  
TEST  
= 100kHz)  
LTC1992CMS8  
LTC1992IMS8/  
LTC1992HMS8  
1.9  
1992f  
4
LTC1992 Family  
ELECTRICAL CHARACTERISTICS  
The denotes specifications which apply over the full operating  
temperature range, otherwise specifications are at TA = 25°C. +VS = 5V, –VS = 0V, VINCM = VOUTCM = VOCM = 2.5V, unless otherwise  
noted. VOCM is the voltage on the VOCM pin. VOUTCM is defined as (+VOUT + –VOUT)/2. VINCM is defined as (+VIN + –VIN)/2. VINDIFF is  
defined as (+VIN – –VIN). VOUTDIFF is defined as (+VOUT – –VOUT). Typical values are at TA = 25°C. Specifications apply to the  
LTC1992-1 only.  
LTC1992-1CMS8  
LTC1992-1IMS8  
LTC1992-1HMS8  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN  
TYP  
MAX  
MIN  
TYP  
MAX  
UNITS  
G
DIFF  
Differential Gain  
1
1
V/V  
%
Differential Gain Error  
±0.1  
50  
±0.3  
±0.1 ±0.35  
Differential Gain Nonlinearity  
Differential Gain Temperature Coefficient  
50  
3.5  
ppm  
3.5  
ppm/°C  
e
Input Referred Noise Voltage Density (Note 7) f = 1kHz  
Input Resistance, Single-Ended +IN, –IN Pins  
45  
30  
45  
nV/Hz  
kΩ  
n
R
22.5  
37.5  
22  
30  
– 0.1V to 4.9V  
60  
38  
IN  
V
Input Signal Common Mode Range  
V = 5V  
S
– 0.1V to 4.9V  
60  
V
INCMR  
CMRR  
Common Mode Rejection Ratio  
(Amplifier Input Referred) (Note 7)  
V
= –0.1V to 3.7V  
55  
55  
dB  
INCM  
SR  
Slew Rate (Note 4)  
0.5  
1.5  
3
0.5  
1.5  
3
V/µs  
GBW  
Gain-Bandwidth Product  
f
= 180kHz  
MHz  
TEST  
The denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.  
+VS = 5V, –VS = 0V, VINCM = VOUTCM = VOCM = 2.5V, unless otherwise noted. VOCM is the voltage on the VOCM pin. VOUTCM is defined as  
(+VOUT + –VOUT)/2. VINCM is defined as (+VIN + –VIN)/2. VINDIFF is defined as (+VIN – –VIN). VOUTDIFF is defined as (+VOUT – –VOUT).  
Typical values are at TA = 25°C. Specifications apply to the LTC1992-2 only.  
LTC1992-2CMS8  
LTC1992-2IMS8  
LTC1992-2HMS8  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN  
TYP  
MAX  
MIN  
TYP  
MAX  
UNITS  
G
DIFF  
Differential Gain  
2
2
V/V  
%
Differential Gain Error  
±0.1  
50  
±0.3  
±0.1 ±0.35  
Differential Gain Nonlinearity  
Differential Gain Temperature Coefficient  
50  
3.5  
ppm  
3.5  
ppm/°C  
e
Input Referred Noise Voltage Density (Note 7) f = 1kHz  
Input Resistance, Single-Ended +IN, –IN Pins  
45  
30  
45  
nV/Hz  
kΩ  
n
R
22.5  
37.5  
22  
30  
– 0.1V to 4.9V  
60  
38  
IN  
V
Input Signal Common Mode Range  
V = 5V  
S
– 0.1V to 4.9V  
60  
V
INCMR  
CMRR  
Common Mode Rejection Ratio  
(Amplifier Input Referred) (Note 7)  
V
= –0.1V to 3.7V  
55  
55  
dB  
INCM  
SR  
Slew Rate (Note 4)  
0.7  
2
4
0.7  
2
4
V/µs  
GBW  
Gain-Bandwidth Product  
f
= 180kHz  
MHz  
TEST  
1992f  
5
LTC1992 Family  
ELECTRICAL CHARACTERISTICS  
The denotes specifications which apply over the full operating  
temperature range, otherwise specifications are at TA = 25°C. +VS = 5V, –VS = 0V, VINCM = VOUTCM = VOCM = 2.5V, unless otherwise  
noted. VOCM is the voltage on the VOCM pin. VOUTCM is defined as (+VOUT + –VOUT)/2. VINCM is defined as (+VIN + –VIN)/2. VINDIFF is  
defined as (+VIN – –VIN). VOUTDIFF is defined as (+VOUT – –VOUT). Typical values are at TA = 25°C. Specifications apply to the  
LTC1992-5 only.  
LTC1992-5CMS8  
LTC1992-5IMS8  
LTC1992-5HMS8  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN  
TYP  
MAX  
MIN  
TYP  
MAX  
UNITS  
G
DIFF  
Differential Gain  
5
5
V/V  
%
Differential Gain Error  
±0.1  
50  
±0.3  
±0.1 ±0.35  
Differential Gain Nonlinearity  
Differential Gain Temperature Coefficient  
50  
3.5  
ppm  
3.5  
ppm/°C  
e
Input Referred Noise Voltage Density (Note 7) f = 1kHz  
Input Resistance, Single-Ended +IN, –IN Pins  
45  
30  
45  
nV/Hz  
kΩ  
n
R
22.5  
37.5  
22  
30  
– 0.1V to 3.9V  
60  
38  
IN  
V
Input Signal Common Mode Range  
V = 5V  
S
– 0.1V to 3.9V  
60  
V
INCMR  
CMRR  
Common Mode Rejection Ratio  
(Amplifier Input Referred) (Note 7)  
V
= –0.1V to 3.7V  
55  
55  
dB  
INCM  
SR  
Slew Rate (Note 4)  
0.7  
2
4
0.7  
2
4
V/µs  
GBW  
Gain-Bandwidth Product  
f
= 180kHz  
MHz  
TEST  
The denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.  
+VS = 5V, –VS = 0V, VINCM = VOUTCM = VOCM = 2.5V, unless otherwise noted. VOCM is the voltage on the VOCM pin. VOUTCM is defined as  
(+VOUT + –VOUT)/2. VINCM is defined as (+VIN + –VIN)/2. VINDIFF is defined as (+VIN – –VIN). VOUTDIFF is defined as (+VOUT – –VOUT).  
Typical values are at TA = 25°C. Specifications apply to the LTC1992-10 only.  
LTC1992-10CMS8  
LTC1992-10IMS8  
LTC1992-10HMS8  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN  
TYP  
MAX  
MIN  
TYP  
MAX  
UNITS  
G
DIFF  
Differential Gain  
10  
±0.1  
50  
10  
V/V  
%
Differential Gain Error  
±0.3  
±0.1 ±0.35  
Differential Gain Nonlinearity  
Differential Gain Temperature Coefficient  
50  
3.5  
ppm  
3.5  
ppm/°C  
e
Input Referred Noise Voltage Density (Note 7) f = 1kHz  
Input Resistance, Single-Ended +IN, –IN Pins  
45  
15  
45  
nV/Hz  
kΩ  
n
R
11.3  
18.8  
11  
15  
– 0.1V to 3.8V  
60  
19  
IN  
V
Input Signal Common Mode Range  
V = 5V  
S
– 0.1V to 3.8V  
60  
V
INCMR  
CMRR  
Common Mode Rejection Ratio  
(Amplifier Input Referred) (Note 7)  
V
= –0.1V to 3.7V  
55  
55  
dB  
INCM  
SR  
Slew Rate (Note 4)  
0.7  
2
4
0.7  
2
4
V/µs  
GBW  
Gain-Bandwidth Product  
f
= 180kHz  
MHz  
TEST  
Note 1: Absolute Maximum Ratings are those values beyond which the life  
of a device may be impaired.  
Note 6: The LTC1992C/LTC1992-XC are guaranteed to meet the specified  
performance limits over the 0°C to 70°C temperature range and are  
designed, characterized and expected to meet the specified performance  
limits over the –40°C to 85°C temperature range but are not tested or QA  
sampled at these temperatures. The LTC1992I/LTC1992-XI are guaranteed  
to meet the specified performance limits over the –40°C to 85°C  
temperature range. The LTC1992H/LTC1992-XH are guaranteed to meet  
the specified performance limits over the –40°C to 125°C temperature  
range.  
Note 7: Differential offset voltage, differential offset voltage drift, CMRR,  
noise voltage density and PSRR are referred to the internal amplifier’s  
input to allow for direct comparison of gain blocks with discrete  
amplifiers.  
Note 2: Output load is connected to the midpoint of the +V and –V  
S
S
potentials. Measurement is taken single-ended, one output loaded at a  
time.  
Note 3: A heat sink may be required to keep the junction temperature  
below the absolute maximum when the output is shorted indefinitely.  
Note 4: Differential output slew rate. Slew rate is measured single ended  
and doubled to get the listed numbers.  
Note 5: The LTC1992C/LTC1992-XC/LTC1992I/LTC1992-XI are guaranteed  
functional over an operating temperature of –40°C to 85°C. The  
LTC1992H/LTC1992-XH are guaranteed functional over the extended  
operating temperature of 40°C to 125°C.  
1992f  
6
LTC1992 Family  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Applicable to all parts in the LTC1992 family.  
Differential Input Offset Voltage  
Common Mode Offset Voltage  
Supply Current vs Supply Voltage  
vs Temperature (Note 7)  
vs Temperature  
4
0.6  
0.4  
1.0  
0.9  
0.8  
0.7  
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
0
V
V
= 0V  
= 0V  
V
V
= 0V  
= 0V  
INCM  
OCM  
125°C  
85°C  
INCM  
OCM  
3
2
V
S
= ±5V  
0.2  
25°C  
1
V
= ±2.5V  
S
0
0
–40°C  
V
= ±1.35V  
V
= ±1.35V  
S
S
–1  
–2  
–3  
–4  
–0.2  
–0.4  
–0.6  
–0.8  
V
= ±2.5V  
S
V
= ±5V  
S
–5  
0
1
2
3
4
5
6
7
8
9
10  
–40  
25  
85  
TEMPERATURE (°C)  
125  
–40  
25  
125  
85  
TEMPERATURE (°C)  
TOTAL SUPPLY VOLTAGE (V)  
1992 G01  
1992 G02  
1992 G03  
Common Mode Offset Voltage  
vs VOCM Voltage  
Common Mode Offset Voltage  
vs VOCM Voltage  
Common Mode Offset Voltage  
vs VOCM Voltage  
5
0
5
5
0
125°C  
125°C  
125°C  
85°C  
25°C  
85°C  
25°C  
0
85°C  
25°C  
–40°C  
–5  
–5  
–5  
–40°C  
–40°C  
–10  
–15  
–20  
–10  
–15  
–20  
–10  
–15  
–20  
+V = 5V  
S
+V = 5V  
S
+V = 2.7V  
S
–V = 0V  
S
–V = –5V  
S
–V = 0V  
S
V
INCM  
= 2.5V  
V
= 0V  
INCM  
V
INCM  
= 1.35V  
0
0.5  
1
1.5  
2
2.5  
3
3.5  
4
4.5  
5
–5 –4 –3 –2 –1  
0
1
2
3
4
5
0
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7  
VOLTAGE (V)  
V
V
VOLTAGE (V)  
V VOLTAGE (V)  
OCM  
OCM  
OCM  
1992 G05  
1992 G06  
1992 G04  
Output Voltage Swing  
vs Output Load, VS = 2.7V  
Output Voltage Swing  
vs Output Load, VS = 5V  
5.00  
1.0  
0.9  
0.8  
0.7  
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
0
2.70  
2.65  
2.60  
2.55  
2.50  
2.45  
2.40  
2.35  
2.30  
0.8  
0.7  
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
0
4.95  
4.90  
4.85  
4.80  
4.75  
4.70  
4.65  
4.60  
4.55  
4.50  
125°C  
125°C  
85°C  
25°C  
–40°C  
25°C  
85°C  
25°C  
–40°C  
85°C  
125°C  
25°C  
85°C  
125°C  
–40°C  
–40°C  
–20  
–5  
0
5
10 15 20  
–15 –10  
0
5
–20 –15 –10 –5  
10 15 20  
LOAD CURRENT (mA)  
LOAD CURRENT (mA)  
1992 G08  
1992 G07  
1992f  
7
LTC1992 Family  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Applicable to all parts in the LTC1992 family.  
Output Voltage Swing  
vs Output Load, VS = ±5V  
V
OCM Input Bias Current  
Differential Input Offset Voltage  
vs Time (Normalized to t = 0)  
vs VOCM Voltage  
10E-9  
1E-9  
5.0  
4.9  
4.8  
4.7  
4.6  
4.5  
4.4  
–3.8  
–4.0  
–4.2  
–4.4  
–4.6  
–4.8  
–5.0  
100  
TEMP = 35°C  
80  
60  
40  
20  
0
125°C  
–40°C  
25°C  
100E-12  
10E-12  
1E-12  
85°C  
125°C  
85°C  
25°C  
85°C  
–20  
–40  
125°C  
–40°C  
25°C  
–60  
–80  
+V = 5V  
S
–40°C  
–V = 0V  
S
INCM  
V
= 2.5V  
100E-15  
–100  
5
10  
–20 –15 –10 –5  
0
15 20  
0
0.5  
1
1.5  
2
2.5  
3
3.5  
4
4.5  
5
800  
TIME (HOURS)  
0
400  
1200  
1600  
2000  
LOAD CURRENT (mA)  
V
VOLTAGE (V)  
OCM  
1992 G10  
1992 G09  
1992 G11  
Differential Gain vs Time  
(Normalized to t = 0)  
Input Common Mode Overdrive  
Recovery (Expanded View)  
Input Common Mode Overdrive  
Recovery (Detailed View)  
10  
8
TEMP = 35°C  
BOTH INPUTS  
(INPUTS TIED TOGETHER)  
BOTH INPUTS  
(INPUTS TIED  
TOGETHER)  
6
4
2
0
OUTPUTS  
OUTPUTS  
–2  
–4  
–6  
–8  
–10  
+V = 2.5V  
+V = 2.5V  
S
S
–V = –2.5V  
–V = –2.5V  
S
S
OCM  
V
= 0V  
V
OCM  
= 0V  
LTC1992-10 SHOWN  
FOR REFERENCE  
LTC1992-10 SHOWN  
FOR REFERENCE  
1992 G13  
1992 G14  
800  
TIME (HOURS)  
0
400  
1200  
1600  
2000  
50µs/DIV  
1µs/DIV  
1992 G12  
Output Overdrive Recovery  
(Detailed View)  
Output Overdrive Recovery  
(Expanded View)  
+V = 2.5V, –V = –2.5V, V  
= 0V  
S
S
OCM  
INPUTS  
OUTPUTS  
INPUTS OUTPUTS  
+V = 2.5V  
S
–V = –2.5V  
S
OCM  
V
= 0V  
LTC1992-2 SHOWN  
FOR REFERENCE  
LTC1992-2 SHOWN FOR REFERENCE  
1992 G16  
1992 G15  
5µs/DIV  
50µs/DIV  
1992f  
8
LTC1992 Family  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Applicable to the LTC1992 only.  
Differential Input Differential  
Single-Ended Input Differential  
Differential Phase Response  
vs Frequency  
Gain vs Frequency, VS = ±2.5V  
Gain vs Frequency, VS = ±2.5V  
12  
6
0
12  
6
0
0
20  
R
= R = 10k  
FB  
R
= R = 10k  
IN FB  
IN  
R
= R = 10k  
FB  
IN  
40  
–6  
–6  
–12  
–18  
–24  
–30  
–36  
–42  
–48  
–54  
–60  
–66  
–12  
–18  
–24  
–30  
–36  
–42  
–48  
–54  
–60  
–66  
60  
80  
C
=
LOAD  
–100  
–120  
–140  
–160  
–180  
C
C
C
C
C
C
C
= 10000pF  
= 5000pF  
= 1000pF  
= 500pF  
= 100pF  
= 50pF  
C
C
C
C
C
C
C
= 10000pF  
= 5000pF  
= 1000pF  
= 500pF  
= 100pF  
= 50pF  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
10pF  
50pF  
100pF  
500pF  
1000pF  
5000pF  
10000pF  
= 10pF  
= 10pF  
10  
100  
1000  
10000  
10  
100  
1000  
10000  
10  
100  
FREQUENCY (kHz)  
1000  
FREQUENCY (kHz)  
FREQUENCY (kHz)  
1992 G17  
1992 G18  
1992 G37  
Differential Input Offset Voltage  
vs Input Common Mode Voltage  
Differential Input Offset Voltage  
vs Input Common Mode Voltage  
Differential Input Offset Voltage  
vs Input Common Mode Voltage  
2.0  
1.5  
2.0  
1.5  
2.0  
1.5  
+V = 2.7V  
S
+V = 5V  
S
+V = 5V  
S
–V = 0V  
S
–V = –5V  
S
–V = 0V  
S
V
= 1.35V  
V
= 0V  
OCM  
V
OCM  
= 2.5V  
OCM  
1.0  
1.0  
1.0  
0.5  
0.5  
0.5  
–40°C  
–40°C  
–40°C  
0
0
0
125°C  
125°C  
125°C  
25°C  
0.5  
–1.0  
–1.5  
–2.0  
–0.5  
–1.0  
–1.5  
–2.0  
–0.5  
–1.0  
–1.5  
–2.0  
85°C  
25°C  
85°C  
25°C  
85°C  
0.6  
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0  
COMMON MODE VOLTAGE (V)  
1922 G21  
–5 –4 –3 –2 –1  
0
1
2
3
4
5
0
0.3  
0.9 1.2 1.5 1.8 2.1 2.4 2.7  
COMMON MODE VOLTAGE (V)  
1922 G20  
COMMON MODE VOLTAGE (V)  
1922 G22  
Common Mode Rejection Ratio  
vs Frequency (Note 7)  
Power Supply Rejection Ratio  
vs Frequency (Note 7)  
Output Balance vs Frequency  
120  
100  
90  
0
20  
40  
60  
80  
–100  
V  
V  
V  
V  
V  
AMPCM  
OUTCM  
S
V  
AMPDIFF  
OUTDIFF  
AMPDIFF  
100  
80  
80  
–V  
S
70  
+V  
S
60  
50  
60  
40  
40  
30  
20  
10  
0
20  
0
100  
1k  
10k  
100k  
1M  
10  
100  
1k  
10k  
100k  
1M  
1
10  
100  
1k  
10k 100k  
1M  
FREQUENCY (Hz)  
FREQUENCY (Hz)  
FREQUENCY (Hz)  
1992 G23  
1992 G24  
1992 G25  
1992f  
9
LTC1992 Family  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Applicable to the LTC1992 only.  
Differential Input Large-Signal  
Step Response  
Differential Input Large-Signal  
Step Response  
+V = 2.5V  
S
+V = 2.5V  
S
–V = –2.5V  
S
–V = –2.5V  
S
V
IN  
–V  
= 0V  
V
= 0V  
OCM  
OCM  
IN  
IN  
+V = ±1.5V  
+V = ±1.5V  
±
±
=
1.5V  
–V  
C
=
1.5V  
IN  
GAIN = 1  
= 0pF  
LOAD  
GAIN = 1  
0V  
0V  
2.5V  
0V  
C
LOAD  
C
LOAD  
= 10000pF  
= 1000pF  
1992 G27  
1992 G26  
20µs/DIV  
2µs/DIV  
Single-Ended Input Large-Signal  
Step Response  
Single-Ended Input Large-Signal  
Step Response  
+V = 5V  
+V = 5V  
S
–V = 0V  
S
S
–V = 0V  
S
OCM  
V
= 2.5V  
+V = 0V TO 4V  
V
= 2.5V  
OCM  
+V = 0V TO 4V  
IN  
IN  
–V = 2V  
–V = 2V  
IN  
GAIN = 1  
IN  
C
= 0pF  
LOAD  
GAIN = 1  
2.5V  
C
LOAD  
C
LOAD  
= 10000pF  
= 1000pF  
1992 G28  
1992 G29  
2µs/DIV  
20µs/DIV  
Differential Input Small-Signal  
Step Response  
Differential Input Small-Signal  
Step Response  
+V = 2.5V  
+V = 2.5V  
S
–V = –2.5V  
S
S
–V = –2.5V  
S
OCM  
V
= 0V  
V
= 0V  
OCM  
IN  
IN  
+V = ±50mV  
+V = ±50mV  
IN  
IN  
±
±
–V  
=
50mV  
= 0pF  
–V  
GAIN = 1  
= 50mV  
C
LOAD  
GAIN = 1  
0V  
C
LOAD  
C
LOAD  
= 10000pF  
= 1000pF  
1992 G30  
1992 G31  
1µs/DIV  
10µs/DIV  
1992f  
10  
LTC1992 Family  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Applicable to the LTC1992 only.  
Single-Ended Input Small-Signal  
Step Response  
Single-Ended Input Small-Signal  
Step Response  
C
C
= 10000pF  
= 1000pF  
LOAD  
LOAD  
2.5V  
2.5V  
+V = 5V  
S
+V = 5V  
–V = 0V  
S
S
OCM  
–V = 0V  
V
= 2.5V  
S
OCM  
V
= 2.5V  
+V = 0V TO 200mV  
IN  
+V = 0V TO 200mV  
–V = 100mV  
IN  
IN  
–V = 100mV  
IN  
C
= 0pF  
LOAD  
GAIN = 1  
GAIN = 1  
1992 G33  
1992 G32  
10µs/DIV  
1µs/DIV  
THD + Noise vs Frequency  
THD + Noise vs Amplitude  
–40  
–40  
–50  
–60  
–70  
–80  
–90  
–100  
500kHz MEASUREMENT BANDWIDTH  
500kHz MEASUREMENT BANDWIDTH  
+V = 5V  
S
+V = 5V  
S
–V = –5V  
S
–50  
–60  
–V = –5V  
S
V
= 0V  
OCM  
V
OCM  
= 0V  
V
= 10V  
OUT  
P-PDIFF  
= 5V  
P-PDIFF  
50kHz  
V
OUT  
20kHz  
–70  
V
V
= 1V  
OUT  
OUT  
P-PDIFF  
P-PDIFF  
10kHz  
5kHz  
–80  
= 2V  
–90  
2kHz  
1kHz  
–100  
100  
1k  
10k  
50k  
0.1  
1
10 20  
FREQUENCY (Hz)  
INPUT SIGNAL AMPLITUDE (V  
)
P-PDIFF  
1992 G35  
1992 G34  
Differential Noise Voltage Density  
vs Frequency  
VOCM Gain vs Frequency,  
VS = ±2.5V  
1000  
100  
10  
5
0
C
= 10pF TO 10000pF  
LOAD  
–5  
–10  
–15  
–20  
–25  
–30  
–35  
10  
100  
1000  
10000  
10  
100  
1000  
10000  
FREQUENCY (Hz)  
FREQUENCY (kHz)  
1922 G36  
1992 G19  
1992f  
11  
LTC1992 Family  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Applicable to the LTC1992-1 only.  
Differential Phase Response  
vs Frequency  
Differential Input Differential  
Gain vs Frequency, VS = ±2.5V  
Single-Ended Input Differential  
Gain vs Frequency, VS = ±2.5V  
12  
6
0
12  
6
0
0
20  
–6  
–6  
40  
–12  
–18  
–24  
–30  
–36  
–42  
–48  
–54  
–60  
–66  
–12  
–18  
–24  
–30  
–36  
–42  
–48  
–54  
–60  
–66  
60  
80  
C
=
LOAD  
–100  
–120  
–140  
–160  
–180  
C
C
C
C
C
C
C
= 10000pF  
= 5000pF  
= 1000pF  
= 500pF  
= 100pF  
= 50pF  
C
LOAD  
C
LOAD  
C
LOAD  
C
LOAD  
C
LOAD  
C
LOAD  
C
LOAD  
= 10000pF  
= 5000pF  
= 1000pF  
= 500pF  
= 100pF  
= 50pF  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
10pF  
50pF  
100pF  
500pF  
1000pF  
5000pF  
10000pF  
= 10pF  
= 10pF  
10  
100  
1000  
10000  
10  
100  
1000  
10000  
10  
100  
1000  
FREQUENCY (kHz)  
FREQUENCY (kHz)  
FREQUENCY (kHz)  
1992 G38  
1992 G39  
1992 G40  
Differential Gain Error vs  
Temperature  
VOCM Gain vs Frequency  
0.025  
0.020  
0.015  
0.010  
0.005  
0
5
0
C
= 10pF TO 10000pF  
LOAD  
–5  
–10  
–15  
–20  
–25  
–30  
–35  
0.005  
0.010  
0.015  
0.020  
0.025  
–50  
0
25  
50  
75 100 125  
–25  
10  
100  
1000  
10000  
TEMPERATURE (°C)  
FREQUENCY (kHz)  
1992 G42  
1992 G41  
Differential Input Offset Voltage  
vs Input Common Mode Voltage  
Differential Input Offset Voltage  
vs Input Common Mode Voltage  
Differential Input Offset Voltage  
vs Input Common Mode Voltage  
5
4
5
4
5
4
+V = 5V  
S
+V = 2.7V  
S
+V = 5V  
S
–V = 5V  
S
–V = 0V  
S
–V = 0V  
S
V
= 0V  
V
OCM  
= 1.35V  
V
OCM  
= 2.5V  
OCM  
3
3
3
2
2
2
1
1
1
125°C  
85°C  
–40°C  
–40°C  
0
0
0
–40°C  
125°C  
125°C  
–1  
–2  
–3  
–4  
–5  
–1  
–2  
–3  
–4  
–5  
–1  
–2  
–3  
–4  
–5  
25°C  
25°C  
85°C  
25°C  
85°C  
0.6  
–3  
0
0.3  
0.9 1.2 1.5 1.8 2.1 2.4 2.7  
COMMON MODE VOLTAGE (V)  
1922 G43  
–5 –4  
–2 –1  
0
1
2
3
4
5
1.0  
0
0.5  
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0  
COMMON MODE VOLTAGE (V)  
COMMON MODE VOLTAGE (V)  
1922 G45  
1922 G44  
1992f  
12  
LTC1992 Family  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Applicable to the LTC1992-1 only.  
Differential Input Large-Signal  
Step Response  
Differential Input Large-Signal  
Step Response  
Common Mode Rejection Ratio  
vs Frequency  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
+V = 2.5V  
S
–V = –2.5V  
S
+V = 2.5V  
S
–V = –2.5V  
S
V
IN  
–V  
= 0V  
V
= 0V  
OCM  
OCM  
IN  
IN  
+V = ±1.5V  
+V = ±1.5V  
±
±
=
1.5V  
–V  
C
=
1.5V  
IN  
= 0pF  
LOAD  
0V  
2.5V  
0V  
0V  
C
LOAD  
C
LOAD  
= 10000pF  
= 1000pF  
V  
AMPCM  
V  
AMPDIFF  
1992 G47  
1992 G46  
20µs/DIV  
2µs/DIV  
100  
1k  
10k  
100k  
1M  
FREQUENCY (Hz)  
1992 G48  
Single-Ended Input Large-Signal  
Step Response  
Single-Ended Input Large-Signal  
Step Response  
Power Supply Rejection Ratio  
vs Frequency  
100  
90  
+V = 5V  
+V = 5V  
S
–V = 0V  
S
S
–V = 0V  
S
OCM  
V
= 2.5V  
V
= 2.5V  
OCM  
80  
+V = 0V TO 4V  
+V = 0V TO 4V  
IN  
–V = 2V  
IN  
–V = 2V  
IN  
IN  
70  
–V  
S
C
= 0pF  
LOAD  
60  
50  
+V  
S
2.5V  
40  
30  
20  
10  
0
C
LOAD  
C
LOAD  
= 10000pF  
= 1000pF  
V  
S
V  
AMPDIFF  
1992 G49  
1992 G50  
10  
100  
1k  
10k  
100k  
1M  
2µs/DIV  
20µs/DIV  
FREQUENCY (Hz)  
1992 G51  
Differential Input Small-Signal  
Step Response  
Differential Input Small-Signal  
Step Response  
Output Balance vs Frequency  
0
20  
40  
+V = 2.5V  
S
–V = –2.5V  
S
+V = 2.5V  
S
–V = –2.5V  
S
V
= 0V  
V
= 0V  
OCM  
IN  
IN  
OCM  
IN  
IN  
+V = ±50mV  
+V = ±50mV  
±
±
–V  
C
=
50mV  
= 0pF  
–V  
=
50mV  
LOAD  
0V  
60  
80  
V  
V  
C
C
= 10000pF  
= 1000pF  
OUTCM  
LOAD  
LOAD  
OUTDIFF  
–100  
1992 G52  
1992 G53  
1
10  
100  
1k  
10k 100k  
1M  
1µs/DIV  
10µs/DIV  
FREQUENCY (Hz)  
1992 G54  
1992f  
13  
LTC1992 Family  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Applicable to the LTC1992-1 only.  
Single-Ended Input Small-Signal  
Step Response  
Single-Ended Input Small-Signal  
Step Response  
Differential Noise Voltage Density  
vs Frequency  
1000  
100  
10  
C
C
= 10000pF  
= 1000pF  
LOAD  
LOAD  
2.5V  
2.5V  
+V = 5V  
S
+V = 5V  
–V = 0V  
S
S
–V = 0V  
V
= 2.5V  
S
OCM  
OCM  
+V = 0V TO 200mV  
V
= 2.5V  
IN  
–V = 100mV  
+V = 0V TO 200mV  
IN  
IN  
–V = 100mV  
C
= 0pF  
IN  
LOAD  
1992 G56  
1992 G55  
10µs/DIV  
1µs/DIV  
10  
100  
1000  
10000  
FREQUENCY (Hz)  
1922 G57  
THD + Noise vs Frequency  
THD + Noise vs Amplitude  
–40  
–40  
–50  
–60  
–70  
–80  
–90  
–100  
500kHz MEASUREMENT BANDWIDTH  
500kHz MEASUREMENT BANDWIDTH  
+V = 5V  
S
+V = 5V  
S
–V = –5V  
S
–50  
–60  
–V = –5V  
S
V
= 0V  
OCM  
V
OCM  
= 0V  
V
= 10V  
P-PDIFF  
OUT  
50kHz  
V
= 5V  
OUT  
P-PDIFF  
20kHz  
–70  
V
V
= 1V  
OUT  
OUT  
P-PDIFF  
P-PDIFF  
10kHz  
5kHz  
–80  
= 2V  
–90  
2kHz  
1kHz  
–100  
100  
1k  
10k  
50k  
0.1  
1
10 20  
FREQUENCY (Hz)  
INPUT SIGNAL AMPLITUDE (V  
)
P-PDIFF  
1992 G59  
1992 G58  
1992f  
14  
LTC1992 Family  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Applicable to the LTC1992-2 only.  
Differential Input Differential  
Gain vs Frequency, VS = ±2.5V  
Single-Ended Input Differential  
Gain vs Frequency, VS = ±2.5V  
Differential Phase Response  
vs Frequency  
18  
12  
6
18  
12  
6
0
20  
0
–6  
0
–6  
40  
60  
–12  
–18  
–24  
–30  
–36  
–42  
–48  
–54  
–60  
–66  
–12  
–18  
–24  
–30  
–36  
–42  
–48  
–54  
–60  
–66  
80  
C
=
LOAD  
100  
120  
140  
160  
180  
C
C
C
C
C
C
C
= 10000pF  
= 5000pF  
= 1000pF  
= 500pF  
= 100pF  
= 50pF  
C
LOAD  
C
LOAD  
C
LOAD  
C
LOAD  
C
LOAD  
C
LOAD  
C
LOAD  
= 10000pF  
= 5000pF  
= 1000pF  
= 500pF  
= 100pF  
= 50pF  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
10pF  
50pF  
100pF  
500pF  
1000pF  
5000pF  
10000pF  
= 10pF  
= 10pF  
10  
100  
1000  
10000  
10  
100  
1000  
10000  
10  
100  
1000  
FREQUENCY (kHz)  
FREQUENCY (kHz)  
FREQUENCY (kHz)  
1992 G60  
1992 G61  
1992 G62  
Differential Gain Error vs  
Temperature  
VOCM Gain vs Frequency,  
VS = ±2.5V  
0.05  
0.04  
5
0
C
= 10pF TO 10000pF  
LOAD  
0.03  
–5  
0.02  
0.01  
–10  
–15  
–20  
–25  
–30  
0
0.01  
0.02  
0.03  
0.04  
0.05  
–50  
0
25  
50  
75 100 125  
–25  
10  
100  
1000  
10000  
TEMPERATURE (°C)  
FREQUENCY (kHz)  
1992 G64  
1992 G63  
Differential Input Offset Voltage  
vs Input Common Mode Voltage  
(Note 7)  
Differential Input Offset Voltage  
vs Input Common Mode Voltage  
(Note 7)  
Differential Input Offset Voltage  
vs Input Common Mode Voltage  
(Note 7)  
2.0  
2.0  
1.5  
2.0  
1.5  
+V = 2.7V  
S
+V = 5V  
S
+V = 5V  
S
–V = 0V  
S
–V = 0V  
S
–V = –5V  
S
1.5  
1.0  
V
= 1.35V  
V
OCM  
= 2.5V  
V
OCM  
= 0V  
OCM  
1.0  
1.0  
–40°C  
25°C  
–40°C  
25°C  
–40°C  
25°C  
0.5  
0.5  
0.5  
85°C  
0
0
0
85°C  
–0.5  
–1.0  
–1.5  
–2.0  
–0.5  
–1.0  
–1.5  
–2.0  
–0.5  
–1.0  
–1.5  
–2.0  
125°C  
125°C  
125°C  
85°C  
1.2 1.5  
1.8 2.1 2.4 2.7  
COMMON MODE VOLTAGE (V)  
0
0.3 0.6 0.9  
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0  
COMMON MODE VOLTAGE (V)  
1992 G66  
–5 –4 –3 –2 –1  
0
1
2
3
4
5
COMMON MODE VOLTAGE (V)  
1992 G65  
1992 G67  
1992f  
15  
LTC1992 Family  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Applicable to the LTC1992-2 only.  
Differential Input Large-Signal  
Step Response  
Differential Input Large-Signal  
Step Response  
Common Mode Rejection Ratio  
vs Frequency (Note 7)  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
+V = 2.5V  
S
–V = –2.5V  
S
+V = 2.5V  
S
–V = –2.5V  
S
V
= 0V  
V
= 0V  
OCM  
IN  
IN  
OCM  
IN  
IN  
+V = ±750mV  
+V = ±750mV  
±
±
–V  
C
=
750mV  
= 0pF  
–V  
=
750mV  
LOAD  
0V  
0V  
V  
V  
C
C
= 10000pF  
= 1000pF  
AMPCM  
LOAD  
LOAD  
AMPDIFF  
1992 G68  
1992 G69  
2µs/DIV  
100  
1k  
10k  
100k  
1M  
20µs/DIV  
FREQUENCY (Hz)  
1992 G70  
Single-Ended Input Large-Signal  
Step Response  
Single-Ended Input Large-Signal  
Step Response  
Power Supply Rejection Ratio  
vs Frequency (Note 7)  
100  
90  
+V = 5V  
+V = 5V  
S
–V = 0V  
S
S
–V  
+V  
S
S
–V = 0V  
S
OCM  
V
= 2.5V  
V
= 2.5V  
OCM  
IN  
80  
+V = 0V TO 2V  
+V = 0V TO 2V  
IN  
–V = 1V  
–V = 1V  
IN  
IN  
70  
C
= 0pF  
LOAD  
60  
50  
2.5V  
2.5V  
40  
30  
20  
10  
0
C
C
= 10000pF  
= 1000pF  
V  
S
AMPDIFF  
LOAD  
LOAD  
V  
1992 G71  
1992 G72  
2µs/DIV  
20µs/DIV  
10  
100  
1k  
10k  
100k  
1M  
FREQUENCY (Hz)  
1992 G73  
Differential Input Small-Signal  
Step Response  
Differential Input Small-Signal  
Step Response  
Output Balance vs Frequency  
0
+V = 2.5V  
+V = 2.5V  
S
–V = –2.5V  
S
S
–V = –2.5V  
S
OCM  
V
= 0V  
V
= 0V  
OCM  
IN  
IN  
20  
+V = ±25mV  
+V = ±25mV  
IN  
±
±
–V  
C
=
25mV  
= 0pF  
–V  
=
25mV  
IN  
LOAD  
40  
60  
0V  
0V  
80  
C
LOAD  
C
LOAD  
= 10000pF  
= 1000pF  
V  
OUTCM  
V  
OUTDIFF  
100  
1992 G74  
1992 G75  
1
10  
100  
1k  
10k 100k  
1M  
2µs/DIV  
20µs/DIV  
FREQUENCY (Hz)  
1992 G76  
1992f  
16  
LTC1992 Family  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Applicable to the LTC1992-2 only.  
Single-Ended Input Small-Signal  
Step Response  
Single-Ended Input Small-Signal  
Step Response  
Differential Noise Voltage Density  
vs Frequency  
1000  
100  
10  
C
C
= 10000pF  
= 1000pF  
LOAD  
LOAD  
2.5V  
2.5V  
+V = 5V  
S
–V = 0V  
S
+V = 5V  
S
–V = 0V  
S
V
= 2.5V  
OCM  
V
= 2.5V  
+V = 0V TO 100mV  
IN  
OCM  
+V = 0V TO 100mV  
IN  
–V = 50mV  
IN  
–V = 50mV  
IN  
C
LOAD  
= 0pF  
1992 G77  
1992 G78  
2µs/DIV  
20µs/DIV  
10  
100  
1000  
10000  
FREQUENCY (Hz)  
1922 G79  
THD + Noise vs Frequency  
THD + Noise vs Amplitude  
–40  
–40  
–50  
–60  
–70  
–80  
–90  
–100  
500kHz MEASUREMENT BANDWIDTH  
+V = 5V  
S
–50  
–60  
–V = –5V  
S
OCM  
V
= 0V  
50kHz  
20kHz  
V
= 1V  
OUT  
P-PDIFF  
–70  
10kHz  
5kHz  
V
= 2V  
OUT  
P-PDIFF  
–80  
V
OUT  
= 5V  
P-PDIFF  
2kHz  
1kHz  
–90  
V
= 10V  
P-PDIFF  
OUT  
–100  
100  
1k  
FREQUENCY (Hz)  
10k  
50k  
0.1  
1
10  
INPUT SIGNAL AMPLITUDE (V  
)
P-PDIFF  
1992 G81  
1992 G80  
1992f  
17  
LTC1992 Family  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Applicable to the LTC1992-5 only.  
Differential Phase Response vs  
Frequency  
Differential Input Differential  
Gain vs Frequency, VS = ±2.5V  
Single-Ended Input Differential  
Gain vs Frequency, VS = ±2.5V  
30  
24  
18  
12  
6
30  
24  
18  
12  
6
0
20  
40  
0
–6  
60  
0
–6  
80  
–12  
–18  
–24  
–30  
–36  
–42  
–48  
–54  
–60  
–12  
–18  
–24  
–30  
–36  
–42  
–48  
–54  
–60  
C
=
10pF  
50pF  
LOAD  
–100  
–120  
–140  
–160  
–180  
C
C
C
C
C
C
C
= 10000pF  
= 5000pF  
= 1000pF  
= 500pF  
= 100pF  
= 50pF  
C
C
C
C
C
C
C
= 10000pF  
= 5000pF  
= 1000pF  
= 500pF  
= 100pF  
= 50pF  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
100pF  
500pF  
1000pF  
5000pF  
10000pF  
= 10pF  
= 10pF  
10  
100  
1000  
10000  
10  
100  
1000  
10  
100  
1000  
10000  
FREQUENCY (kHz)  
FREQUENCY (kHz)  
FREQUENCY (kHz)  
1992 G83  
1992 G82  
1992 G84  
Differential Gain Error vs  
Temperature  
VOCM Gain vs Frequency  
0.050  
0.025  
5
0
C
= 10pF TO 10000pF  
LOAD  
0
–5  
0.025  
0.050  
0.075  
0.100  
0.125  
–01.50  
–10  
–15  
–20  
–25  
–30  
–50  
0
25  
50  
75 100 125  
10  
100  
1000  
10000  
–25  
TEMPERATURE (°C)  
FREQUENCY (kHz)  
1992 G86  
1992 G85  
Differential Input Offset Voltage  
vs Input Common Mode Voltage  
Differential Input Offset Voltage  
vs Input Common Mode Voltage  
Differential Input Offset Voltage  
vs Input Common Mode Voltage  
2.0  
1.5  
2.0  
1.5  
2.0  
1.5  
+V = 2.7V  
S
+V = 5V  
S
+V = 5V  
S
–V = 0V  
S
–V = 0V  
S
–V = 5V  
S
V
= 1.35V  
V
OCM  
= 2.5V  
V
= 0V  
OCM  
OCM  
1.0  
1.0  
1.0  
–40°C  
0.5  
0.5  
0.5  
–40°C  
–40°C  
0
0
0
125°C  
85°C  
125°C  
25°C  
25°C  
125°C  
–0.5  
–1.0  
–1.5  
–2.0  
–0.5  
–1.0  
–1.5  
–2.0  
25°C  
85°C  
–0.5  
–1.0  
–1.5  
–2.0  
85°C  
1.0  
0
0.5  
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0  
COMMON MODE VOLTAGE (V)  
0.6  
0
0.3  
0.9 1.2 1.5 1.8 2.1 2.4 2.7  
COMMON MODE VOLTAGE (V)  
1922 G87  
–3  
–5 –4  
–2 –1  
0
1
2
3
4
5
COMMON MODE VOLTAGE (V)  
1922 G88  
1922 G89  
1992f  
18  
LTC1992 Family  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Applicable to the LTC1992-5 only.  
Differential Input Large-Signal  
Step Response  
Differential Input Large-Signal  
Step Response  
Common Mode Rejection Ratio  
vs Frequency (Note 7)  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
+V = 2.5V  
+V = 2.5V  
S
S
–V = –2.5V  
–V = –2.5V  
S
S
OCM  
V = 0V  
V
= 0V  
OCM  
+V = ± 300mV  
+V = ± 300mV  
IN  
–V =  
IN  
IN  
±
±
300mV  
–V  
C
=
300mV  
= 0pF  
IN  
LOAD  
0V  
0V  
C
C
= 10000pF  
= 1000pF  
V  
LOAD  
LOAD  
AMPCM  
V  
AMPDIFF  
1992 G91  
1992 G90  
20µs/DIV  
100  
1k  
10k  
100k  
1M  
2µs/DIV  
FREQUENCY (Hz)  
1992 G92  
Single-Ended Input Large-Signal  
Step Response  
Single-Ended Input Large-Signal  
Step Response  
Power Supply Rejection Ratio  
vs Frequency (Note 7)  
100  
90  
C
C
= 10000pF  
= 1000pF  
LOAD  
LOAD  
80  
70  
+V  
S
60  
50  
–V  
S
2.5V  
2.5V  
40  
30  
20  
10  
0
+V = 5V  
S
+V = 5V  
S
–V = 0V  
S
OCM  
–V = 0V  
S
OCM  
V
= 2.5V  
V
= 2.5V  
+V = 0V TO 800mV  
IN  
V  
+V = 0V TO 800mV  
IN  
S
–V = 400mV  
IN  
V  
–V = 400mV  
IN  
AMPDIFF  
C
= 0pF  
LOAD  
1992 G94  
1992 G93  
20µs/DIV  
10  
100  
1k  
10k  
100k  
1M  
2µs/DIV  
FREQUENCY (Hz)  
1992 G95  
Differential Input Small-Signal  
Step Response  
Differential Input Small-Signal  
Step Response  
Output Balance vs Frequency  
0
20  
40  
60  
80  
+V = 2.5V  
+V = 2.5V  
S
–V = –2.5V  
S
S
–V = –2.5V  
S
OCM  
V
= 0V  
V
IN  
–V  
= 0V  
OCM  
+V = ±10mV  
+V = ±10mV  
IN  
IN  
LOAD  
±
±
–V  
=
10mV  
= 0pF  
=
10mV  
IN  
C
0V  
0V  
V  
C
LOAD  
C
LOAD  
= 10000pF  
= 1000pF  
OUTCM  
V  
OUTDIFF  
100  
1992 G96  
1992 G97  
1
10  
100  
1k  
10k 100k  
1M  
5µs/DIV  
50µs/DIV  
FREQUENCY (Hz)  
1992 G98  
1992f  
19  
LTC1992 Family  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Applicable to the LTC1992-5 only.  
Single-Ended Input Small-Signal  
Step Response  
Differential Noise Voltage Density  
vs Frequency  
Single-Ended Input Small-Signal  
Step Response  
1000  
100  
10  
C
LOAD  
C
LOAD  
= 10000pF  
= 1000pF  
2.5V  
2.5V  
+V = 5V  
S
–V = 0V  
S
+V = 5V  
S
V
= 2.5V  
–V = 0V  
S
OCM  
+V = 0V TO 40mV  
IN  
V
= 2.5V  
OCM  
–V = 20mV  
IN  
C
+V = 0V TO 40mV  
IN  
= 0pF  
–V = 20mV  
IN  
LOAD  
1992 G99  
1992 G100  
5µs/DIV  
10  
100  
1000  
10000  
50µs/DIV  
FREQUENCY (Hz)  
1922 G101  
THD + Noise vs Frequency  
THD + Noise vs Amplitude  
–40  
–40  
–50  
–60  
–70  
–80  
–90  
–100  
500kHz MEASUREMENT BANDWIDTH  
500kHz MEASUREMENT BANDWIDTH  
+V = 5V  
+V = 5V  
S
S
–50 –V = –5V  
–V = –5V  
S
S
OCM  
V
= 0V  
V
OCM  
= 0V  
50kHz  
–60  
–70  
V
= 1V  
= 2V  
OUT  
P-PDIFF  
20kHz  
10kHz  
V
OUT  
P-PDIFF  
V
V
= 5V  
P-PDIFF  
OUT  
5kHz  
2kHz  
–80  
= 10V  
P-PDIFF  
OUT  
–90  
1kHz  
–100  
100  
1k  
FREQUENCY (Hz)  
10k  
50k  
0.1  
1
5
INPUT SIGNAL AMPLITUDE (V  
)
P-PDIFF  
1992 G103  
1992 G102  
1992f  
20  
LTC1992 Family  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Applicable to the LTC1992-10 only.  
Differential Input Differential  
Gain vs Frequency, VS = ±2.5V  
Single-Ended Input Differential  
Gain vs Frequency, VS = ±2.5V  
Differential Phase Response vs  
Frequency  
40  
30  
40  
30  
0
20  
20  
20  
40  
10  
10  
60  
0
0
80  
–10  
–20  
–30  
–40  
–50  
–60  
–10  
–20  
–30  
–40  
–50  
–60  
C
=
10pF  
50pF  
100pF  
500pF  
1000pF  
5000pF  
10000pF  
LOAD  
–100  
–120  
–140  
–160  
–180  
C
C
C
C
C
C
C
= 10000pF  
= 5000pF  
= 1000pF  
= 500pF  
= 100pF  
= 50pF  
C
LOAD  
C
LOAD  
C
LOAD  
C
LOAD  
C
LOAD  
C
LOAD  
C
LOAD  
= 10000pF  
= 5000pF  
= 1000pF  
= 500pF  
= 100pF  
= 50pF  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
LOAD  
= 10pF  
= 10pF  
10  
100  
1000  
10  
100  
1000  
10000  
10  
100  
1000  
10000  
FREQUENCY (kHz)  
FREQUENCY (kHz)  
FREQUENCY (kHz)  
1992 G104  
1992 G105  
1992 G106  
Differential Gain Error vs  
Temperature  
VOCM Gain vs Frequency  
0.050  
0.025  
5
0
C
= 10pF TO 10000pF  
LOAD  
0
0.025  
0.050  
0.075  
0.100  
0.125  
0.150  
0.175  
0.200  
–5  
–10  
–15  
–20  
–25  
–30  
–50  
0
25  
50  
75 100 125  
–25  
10  
100  
1000  
10000  
TEMPERATURE (°C)  
FREQUENCY (kHz)  
1992 G107  
1992 G108  
Differential Input Offset Voltage  
vs Input Common Mode Voltage  
Differential Input Offset Voltage  
vs Input Common Mode Voltage  
Differential Input Offset Voltage  
vs Input Common Mode Voltage  
2.0  
1.5  
2.0  
1.5  
2.0  
1.5  
+V = 2.7V  
S
+V = 5V  
S
+V = 5V  
S
–V = 0V  
S
–V = 0V  
S
–V = 5V  
S
V
= 1.35V  
V
= 2.5V  
V
= 0V  
OCM  
OCM  
OCM  
1.0  
1.0  
1.0  
0.5  
0.5  
0.5  
–40°C  
–40°C  
–40°C  
0
0
0
125°C  
125°C  
85°C  
25°C  
125°C  
–0.5  
–1.0  
–1.5  
–2.0  
–0.5  
–1.0  
–1.5  
–2.0  
–0.5  
–1.0  
–1.5  
–2.0  
25°C  
85°C  
25°C  
85°C  
0.6  
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0  
COMMON MODE VOLTAGE (V)  
1922 G110  
–3  
–5 –4  
–2 –1  
0
0.3  
0.9 1.2 1.5 1.8 2.1 2.4 2.7  
COMMON MODE VOLTAGE (V)  
0
1
2
3
4
5
COMMON MODE VOLTAGE (V)  
1922 G109  
1922 G111  
1992f  
21  
LTC1992 Family  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Applicable to the LTC1992-10 only.  
Differential Input Large-Signal  
Step Response  
Differential Input Large-Signal  
Step Response  
Common Mode Rejection Ratio  
vs Frequency (Note 7)  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
+V = 2.5V  
S
–V = –2.5V  
S
+V = 2.5V  
S
–V = –2.5V  
S
V
IN  
–V  
= 0V  
V
= 0V  
OCM  
OCM  
+V = ±150mV  
IN  
+V = ±150mV  
IN  
±
±
=
150mV  
–V  
C
=
150mV  
= 0pF  
IN  
LOAD  
0V  
0V  
V  
AMPCM  
C
LOAD  
C
LOAD  
= 10000pF  
= 1000pF  
V  
AMPDIFF  
1992 G113  
1992 G112  
100  
1k  
10k  
100k  
1M  
20µs/DIV  
2µs/DIV  
FREQUENCY (Hz)  
1992 G114  
Single-Ended Input Large-Signal  
Step Response  
Single-Ended Input Large-Signal  
Step Response  
Power Supply Rejection Ratio  
vs Frequency (Note 7)  
100  
90  
C
C
= 10000pF  
= 1000pF  
LOAD  
LOAD  
80  
+V  
S
70  
–V  
S
60  
50  
2.5V  
2.5V  
40  
30  
20  
10  
0
+V = 5V  
S
–V = 0V  
S
OCM  
+V = 5V  
S
V
= 2.5V  
–V = 0V  
S
OCM  
+V = 0V TO 400mV  
IN  
V
= 2.5V  
–V = 200mV  
IN  
V  
+V = 0V TO 400mV  
IN  
S
C
= 0pF  
LOAD  
–V = 200mV  
IN  
V  
AMPDIFF  
1992 G115  
1992 G116  
2µs/DIV  
10  
100  
1k  
10k  
100k  
1M  
20µs/DIV  
FREQUENCY (Hz)  
1992 G117  
Differential Input Small-Signal  
Step Response  
Differential Input Small-Signal  
Step Response  
Output Balance vs Frequency  
0
20  
40  
60  
80  
100  
+V = 2.5V  
+V = 2.5V  
S
–V = –2.5V  
S
S
–V = –2.5V  
S
OCM  
V
= 0V  
V
= 0V  
OCM  
IN  
IN  
+V = ±5mV  
+V = ±5mV  
IN  
±
±
–V  
C
=
5mV  
–V  
=
5mV  
IN  
LOAD  
= 0pF  
0V  
0V  
V  
C
C
= 10000pF  
= 1000pF  
OUTCM  
LOAD  
LOAD  
V  
OUTDIFF  
120  
1992 G118  
1992 G119  
1
10  
100  
1k  
10k 100k  
1M  
10µs/DIV  
100µs/DIV  
FREQUENCY (Hz)  
1992 G120  
1992f  
22  
LTC1992 Family  
U W  
TYPICAL PERFOR A CE CHARACTERISTICS  
Applicable to the LTC1992-10 only.  
Single-Ended Input Small-Signal  
Step Response  
Single-Ended Input Small-Signal  
Step Response  
Differential Noise Voltage Density  
vs Frequency  
1000  
100  
10  
C
C
= 10000pF  
= 1000pF  
LOAD  
LOAD  
2.5V  
2.5V  
+V = 5V  
S
+V = 5V  
S
–V = 0V  
S
–V = 0V  
S
V
= 2.5V  
OCM  
V
= 2.5V  
+V = 0V TO 20mV  
IN  
OCM  
+V = 0V TO 20mV  
IN  
–V = 10mV  
IN  
C
–V = 10mV  
IN  
= 0pF  
LOAD  
1992 G121  
1992 G122  
10µs/DIV  
100µs/DIV  
10  
100  
1000  
10000  
FREQUENCY (Hz)  
1922 G123  
THD + Noise vs Frequency  
THD + Noise vs Amplitude  
–40  
–40  
–50  
–60  
–70  
–80  
–90  
–100  
500kHz MEASUREMENT BANDWIDTH  
+V = 5V  
S
50kHz  
20kHz  
–50 –V = –5V  
S
OCM  
V
= 0V  
–60  
–70  
V
= 1V  
= 2V  
= 5V  
OUT  
P-PDIFF  
P-PDIFF  
P-PDIFF  
V
OUT  
10kHz  
5kHz  
V
OUT  
–80  
2kHz  
1kHz  
–90  
–100  
100  
1k  
10k  
50k  
0.1  
1
2
FREQUENCY (Hz)  
INPUT SIGNAL AMPLITUDE (V  
)
P-PDIFF  
1992 G125  
1992 G124  
1992f  
23  
LTC1992 Family  
U
U
U
PI FU CTIO S  
+VS, –VS (Pins 3, 6): The +VS and –VS power supply pins  
should be bypassed with 0.1µF capacitors to an adequate  
analog ground or ground plane. The bypass capacitors  
shouldbelocatedascloselyaspossibletothesupplypins.  
–IN, +IN (Pins 1, 8): Inverting and Noninverting Inputs of  
the Amplifier. For the LTC1992 part, these pins are con-  
nected directly to the amplifier’s P-channel MOSFET input  
devices. The fixed gain LTC1992-X parts have precision,  
on-chip gain setting resistors. The input resistors are  
nominally 30k for the LTC1992-1, LTC1992-2 and  
LTC1992-5 parts. The input resistors are nominally 15k  
for the LTC1992-10 part.  
+OUT, –OUT (Pins 4, 5): The Positive and Negative  
Outputs of the Amplifier. These rail-to-rail outputs are  
designed to drive capacitive loads as high as 10,000pF.  
V
MID (Pin7):Mid-SupplyReference.Thispinisconnected  
V
OCM (Pin 2): Output Common Mode Voltage Set Pin. The  
to an on-chip resistive voltage divider to provide a mid-  
supply reference. This provides a convenient way to set  
the output common mode level at half-supply. If used for  
this purpose, Pin 2 will be shorted to Pin 7, Pin 7 should  
be bypassed with a 0.1µF capacitor to ground. If this  
reference voltage is not used, leave the pin floating.  
voltage on this pin sets the output signal’s common mode  
voltage level. The output common mode level is set  
independent of the input common mode level. This is a  
high impedance input and must be connected to a known  
and controlled voltage. It must never be left floating.  
W
BLOCK DIAGRA S  
(1992)  
+V  
S
3
+V  
S
–IN  
MID  
1
7
2
+
V
+
+OUT  
4
–V  
S
200k  
+
30k  
30k  
V
200k  
+
+
A1  
A2  
V
V
OCM  
+IN  
+
+V  
–OUT  
5
1992 BD  
S