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NI 9237 Operating Instructions and Specifications 22 ni.com
Type of ADC.....................................Delta-Sigma (with analog
prefiltering)
Sampling mode.................................Simultaneous
Internal master timebase (f
M
)
Frequency...................................12.8 MHz
Accuracy.....................................±100 ppm max
Data rate range (f
s
) using internal master timebase
Minimum....................................1.613 kS/s
Maximum ...................................50 kS/s
Data rate range (f
s
) using external master timebase
Minimum....................................390.625 S/s
Maximum ...................................51.3 kS/s
Data rates
1
(f
s
)................................... , n = 1, 2, …, 31
Typical input range ...........................±25 mV/V
Scaling coefficient ............................2.9802 nV/V per LSB
1
The data rate must remain within the appropriate data rate range. Refer to the
Understanding NI 9237 Data Rates section for more information.
f
M
256÷
n
---------------------