National Instruments E Series - Manual (Page 92)

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 G
Ω
in parallel with 100 pF
Powered off ................................ 1 k
Ω
min
Overload ..................................... 1 k
Ω
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