Specifications Appendix A
Lab-PC+ User Manual A-2 © National Instruments Corporation
Amplifier Characteristics
Input impedance............................................ 0.1 GΩ in parallel with 45 pF
Input bias current .......................................... 150 pA
CMRR ........................................................... Gain CMRR at 60 Hz
1
100 75 dB
105 dB
Dynamic Characteristics
Bandwidth (-3 dB) ........................................ 400 kHz for gain = 1, 40 kHz for gain = 100
Settling time to full-scale step....................... Gain Accuracy
±0.2% (± LSB)
≤10
20, 50
100
14 µs
20 µs
33 µs
System noise ................................................. Gain ±5 V Range
1
100 0.3 LSB rms
0.6 LSB rms
Stability
Recommended warm-up time ....................... 15 minutes
Offset temperature coefficient
Pregain .................................................... 450 µV/ºC
Postgain................................................... 10 µV/ºC
Gain temperature coefficient......................... ±50 ppm/ºC