Isolated Analog Input Device User's Manual

Appendix A Specifications for
NI PXI-4224 User Manual A-2 ni.com
Input coupling.........................................DC
Bandwidth, –3 dB ...................................15 kHz
Slew rate .................................................2 V/μs typical
Input impedance
Powered on ......................................100 MΩ parallel 100 pF
Powered off .....................................30 kΩ
Input bias current ....................................100 pA
CMRR
Balanced ..........................................120 dB at DC to 60 Hz
10 kΩ imbalanced............................85 dB at DC to 60 Hz;
65 dB at 60 Hz to 10 kHz
Crosstalk at 1 kHz
Adjacent channels............................–75 dB
All other channels............................–90 dB
Accuracy
Transfer Characteristics
Nonlinearity ............................................0.02% FSR
DNL ........................................................±0.5 LSB typ, ±1 LSB max
No missing codes....................................16 bits, guaranteed
Nominal
Range
(V)
% of
Reading
1 Year
Offset
(μV)
Noise + Quantization
(μV)
Temperature Drift
Absolute
Accuracy
at Full
Scale
(mV)
Single
Pt.
Averaged
Gain
(%/°C)
Offset
(μV/°C)
±10 V 0.11 ±1730 ±6317 ±200 0.0025 230 12.6
±1 V 0.12 ±176 ±632 ±20.0 0.0025 26 1.4
Note: Accuracies are valid for measurements following an internal calibration and with autozero enabled, and are listed for
operational temperatures within ±1 °C of the internal calibration temperature and ±10 °C of 23 °C. Averaged numbers
assume 1,000 single-channel readings.