LTC1992 Family
Low Power, Fully Differential
Input/Output
Amplifier/Driver Family
FEATURES
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DESCRIPTIO
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
C
LOAD
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 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 V
OCM
pin sets the output common mode level inde-
pendent of the input common mode level. This feature
makes level shifting of signals easy.
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.
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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
APPLICATIO S
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Differential Driver/Receiver
Differential Amplification
Single-Ended to Differential Conversion
Level Shifting
Trimmed Phase Response for Multichannel Systems
TYPICAL APPLICATIO
Single-Supply, Single-Ended to Differential Conversion
10k
5V
10k
0V
–5V
10k
0.01µF
INPUT SIGNAL
FROM A
±5V
SYSTEM
V
IN
1
7
2
8
5V
3
5V
4
5V
2.5V
0V
5V
2.5V
0V
OUTPUT SIGNAL
FROM A
SINGLE-SUPPLY SYSTEM
1992 TA01a
– +
V
MID
V
OCM
6
10k
V
IN
(5V/DIV)
+OUT
(2V/DIV)
–OUT
1992 TA01b
LTC1992
5
+ –
U
0V
–5V
5V
0V
1992f
U
U
1
LINER [ LINEAR TECHNOLOGY ]
