Data Translation DT9820 Series, User Manual

Page: 87 / 112

Specifications
75
A
A
A
A
A
A
A
A
A
Range
Unipolar:
Offset Unipolar:
Bipolar:
0 to 0.0390625 V, 0.078125 V, 0.15625 V,
0. 3125 V, 0.625 V, 1.25 V, 2.5 V
−
0.10 V to 0.0390625 V,
−
0.10 V to 0.078125 V,
−
0.10 V to 0.15625 V,
−
0.10 V to 0. 3125 V,
−
0.10 V to 0.625 V,
−
0.10 V to 1.25 V,
−
0.10 V to 2.5 V
±0.0390625 V, 0.078125 V, 0.15625 V,
0.3125 V, 0.625 V, 1.25 V, 2.5 V
Drift
Zero:
Gain:
±100 nV+ (±5 nV * Gain)/
°
C
±30 ppm/
°
C
Input impedance
Power Off:
Power On:
100 k
Ω
100 M
Ω
/20 k
Ω
in series with 4700 pF
Input bias current ±20 nA
Common mode voltage ±3 V maximum (operational)
Common mode rejection
−
72 dB
Normal mode rejection 74 dB typical
Maximum input voltage ±40 V maximum (protection)
A/D converter noise 1.0 LSB rms
Table 7: A/D Subsystem Specifications (cont.)
Feature
DT9821/DT9822
Specifications