National Instruments E Series , Transfer Characteristics, Amplifier Characteristics

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