Data Translation DT9828, User Manual

Page: 99 / 116

Specifications
99
Voltage Measurement Specifications
Table 26 lists the voltage measurement specifications for the analog input subsystem on the
DT9828 module.
Table 26: Voltage Measurement Specifications
Feature Specifications
a
a. Conditions for specification:
Module is calibrated at 23 C.
Values are typical for the module operated in a stable 23°C ±5°C environment.
Valid for 1 year from calibration.
Number of voltage channels Up to 8 differential voltage inputs
A/D converter resolution 24-bits
Full-scale input range ±156 mV
Aggregate sample rate 600 Samples/s maximum
Sampling mode Multiplexed
DC differential input impedance 10 M
Ω
Input bias current 250 nA
Input common mode voltage ±500 V
Differential input voltage ±10 V maximum (protection)
Common mode rejection @ 60 Hz and 50 Hz 120 dB
Noise 3
μ
V pk-pk at maximum throughput (see Table 25 on
page 97 for more information)
Input signal bandwidth, –3 dB Total throughput rate x 2, in Hz (see “Input Signal
Bandwidth” on page 100 for more information)
Offset error
b
b. Voltage source impedance <= 50 ohms
.
±20
μ
V
Gain error ±0.03% of reading
Linearity error ±2
μ
V
Offset error tempco ±20 nV/°C
Gain error tempco ±0.0015% of reading/°C