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Appendix A Specifications for DAQCard-AI-16XE-50
National Instruments Corporation A-9 DAQCard E Series User Manual
Transfer Characteristics
Relative accuracy ..............................
±
1.5 LSB typ,
±
1.75 LSB max
DNL.................................................. +1.5, -0.75 LSB typ,
+1.75, -1.0 LSB max
No missing codes .............................. 16 bits, guaranteed
Offset error
Pregain error after calibration .....
±
3
µ
V max
Pregain error before calibration...
±
280
µ
V max
Postgain error after calibration....
±
162
µ
V max (bipolar),
±
81
µ
V max (unipolar)
Postgain error before calibration.±37.5 mV max (bipolar),
±175.75 mV max (unipolar)
Gain error (relative to calibration reference)
After calibration (gain = 1) .........±7.6 ppm of reading max
Before calibration .......................±27,650 ppm of reading max
With gain error adjusted to 0 at gain = 1
Gain = 2, 10 ................................±100 ppm of reading
Gain = 100 ..................................±250 ppm of reading
Amplifier Characteristics
Input impedance
Normal, powered on....................7 GΩ in parallel with 100 pF
Powered off ................................1 kΩ min
Overload .....................................1 kΩ min
Input bias current .............................. ±10 nA
Input offset current............................ ±14 nA
CMRR, DC to 60 Hz
Gain = 1......................................80 dB
Gain = 2......................................86 dB
Gain = 10....................................100 dB
Gain = 100 ..................................120 dB