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Appendix A Specifications for DAQCard-AI-16E-4
National Instruments Corporation A-3 DAQCard E Series User Manual
Transfer Characteristics
Relative accuracy .............................
±
0.5 LSB typ dithered,
±
1.5 LSB
max undithered
DNL..................................................
±
0.5 LSB typ,
±
1.0 LSB max
No missing codes .............................. 12 bits, guaranteed
Offset error
Pregain error after calibration .....
±
16
µ
V max
Pregain error before calibration...
±
4.0 mV max
Postgain error after calibration....
±
1.0 mV max
Postgain error before calibration.
±
265 mV max
Gain error (relative to calibration reference)
After calibration (gain = 1) .........
±
0.02% of reading max
Before calibration .......................
±
2.5% of reading max
Gain
≠
1 with gain error
adjusted to 0 at gain = 1 .......
±
0.02% of reading max
Amplifier Characteristics
Input impedance
Normal powered on.....................100 G
Ω
in parallel with 100 pF
Powered off ................................1 k
Ω
min
Overload .....................................1 k
Ω
min
Input bias current ..............................
±
200 pA
Input offset current............................
±
100 pA
CMRR (all input ranges, DC to 60 Hz)
Gain
≤
1......................................85 dB
Gain = 2......................................95 dB
Gain
≥
5......................................100 dB
Dynamic Characteristics
Bandwidth
small signal (-3 dB) ....................800 kHz
large signal (1% THD)................400 kHz