LTC1857/LTC1858/LTC1859
ABSOLUTE
(Notes 1, 2)
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
TOP VIEW
COM
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
MUXOUT
+
MUXOUT
–
ADC
+
ADC
–
Supply Voltage (OV
DD
= DV
DD
= AV
DD
= V
DD
) ........... 6V
Ground Voltage Difference
DGND, AGND1, AGND2, AGND3 ......................
±0.3V
Analog Input Voltage
ADC
+
, ADC
–
(Note 3) ...................(AGND1 – 0.3V) to (AV
DD
+ 0.3V)
CH0-CH7, COM ..................................................
±25V
Digital Input Voltage (Note 4) ...... (DGND – 0.3V) to 10V
Digital Output Voltage .... (DGND – 0.3V) to (DV
DD
+ 0.3V)
Power Dissipation .............................................. 500mW
Operating Temperature Range
LTC1857C/LTC1858C/LTC1859C ............ 0°C to 70°C
LTC1857I/LTC1858I/LTC1859I .......... – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................. 300°C
1
2
3
4
5
6
7
8
9
10
11
12
13
28 CONVST
27 RD
26 SCK
25 SDI
24 DGND
23 SDO
22 BUSY
21 OV
DD
20 DV
DD
19 AV
DD
18 AGND3
17 AGND2
16 REFCOMP
15 V
REF
ORDER PART
NUMBER
LTC1857CG
LTC1857IG
LTC1858CG
LTC1858IG
LTC1859CG
LTC1859IG
AGND1 14
G PACKAGE
28-LEAD PLASTIC SSOP
T
JMAX
= 110°C,
θ
JA
= 95°C/W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
CO VERTER A D
PARAMETER
Resolution
No Missing Codes
Transition Noise
Integral Linearity Error
Differential Linearity Error
Bipolar Zero Error
Bipolar Zero Error Drift
Bipolar Zero Error Match
Unipolar Zero Error
Unipolar Zero Error Drift
Unipolar Zero Error Match
Bipolar Full-Scale Error
Bipolar Full-Scale Error Drift
Bipolar Full-Scale Error Match
Unipolar Full-Scale Error
Unipolar Full-Scale Error Drift
Unipolar Full-Scale Error Match
Input Common Mode Range
The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
MUXOUT connected to ADC inputs. (Notes 5, 6)
CONDITIONS
●
●
ULTIPLEXER CHARACTERISTICS
LTC1857
MIN TYP MAX
12
12
0.06
±1
–1
1
±9
±0.1
±4
±6
±1
±1.2
±0.35
±0.45
±2.5
±7
±5
±0.45
±0.75
±2.5
±7
±5
0 to 10
±10
96
(Notes 7, 15)
(Note 15)
(Note 8)
●
●
●
(Note 8)
●
External Reference (Note 11)
●
Internal Reference (Note 11)
External Reference
Internal Reference
External Reference (Note 11)
●
Internal Reference (Note 11)
External Reference
Internal Reference
Unipolar Mode
Bipolar Mode
●
●
Input Common Mode Rejection Ratio
LTC1858
MIN
TYP MAX
14
14
0.26
±1.5
–1
1.5
±17
±0.1
±6
±15
±1
±2
±0.15
±0.40
±2.5
±7
±10
±0.25
±0.85
±2.5
±7
±12
0 to 10
±10
96
LTC1859
MIN TYP MAX
16
15
1
±3
–2
4
±28
±0.1
±10
±25
±1
±8
±0.1
±0.4
±2.5
±7
±15
±0.20
±0.75
±2.5
±7
±15
0 to 10
±10
96
UNITS
Bits
Bits
LSB
RMS
LSB
LSB
LSB
ppm/°C
LSB
LSB
ppm/°C
LSB
%
%
ppm/°C
ppm/°C
LSB
%
%
ppm/°C
ppm/°C
LSB
V
V
dB
185789f
2
U
W
U
U
W W
W U
W
U
LINEAR [ LINEAR INTEGRATED SYSTEMS ]
