Analog Input Module Operating Instructions and Specifications

© National Instruments Corp. 25 NI 9234 Operating Instructions and Specifications
Alias-free bandwidth ........................0.45 · f
s
Oversample rate ................................ 64 · f
s
Crosstalk (1 kHz).............................. –110 dB
CMRR (f
in
≤ 1 kHz)
Minimum.................................... 40 dB
Typical ........................................ 47 dB
SFDR (f
in
= 1 kHz, –60 dBFS) ......... 120 dB
Idle channel noise and noise density
Input impedance
Differential ................................. 305 kΩ
AI– (shield) to chassis ground.... 50 Ω
Idle Channel 51.2 kS/s 25.6 kS/s 2.048 kS/s
Noise 97 dBFS 99 dBFS 103 dBFS
50 μV
rms
40 μV
rms
25 μV
rms
Noise density 310 nV/√Hz 350 nV/√Hz 780 nV/√Hz