Data Translation DT9824, Руководство пользователя, Страница: 82 / 102

Appendix A
82
Analog Input Specifications
Table 22 lists the specifications for the A/D subsystem on the DT9824 module.
Table 22: A/D Subsystem Specifications
Feature DT9824 Specifications
Number of analog inputs 4 Differential
Number of gains 4 (1, 8, 16, 32)
Resolution 24 bits
Data encoding Offset binary
Coupling DC
Sample frequency per channel 4.7 Hz to 4800 Hz
System accuracy @ 10 Hz
(full-scale = 10 V)
Gain = 1:
Gain = 8:
Gain = 16:
Gain = 32: 0.001%
0.002%
0.003%
0.005%
System accuracy @ 100 Hz
(full-scale = 10 V)
Gain = 1:
Gain = 8:
Gain = 16:
Gain = 32: 0.001%
0.002%
0.003%
0.006%
System accuracy @ 1200 Hz
(full-scale = 10 V)
Gain = 1:
Gain = 8:
Gain = 16:
Gain = 32: 0.001%
0.002%
0.004%
0.007%
System accuracy @ 4800 Hz
(full-scale = 10 V)
Gain = 1:
Gain = 8:
Gain = 16:
Gain = 32: 0.001%
0.003%
0.005%
0.010%
Nonlinearity (integral)
Gain = 1:
Gain > 1: ±5 ppm full-scale maximum
±15 ppm full-scale maximum
Differential linearity ±1.0 LSB (no missing codes)
Input range
Gain = 1:
Gain = 8:
Gain = 16:
Gain = 32: ±10 V
±1.25 V
±0.625 V
±0.3125 V