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© National Instruments Corporation 9 SCC-AI Series Isolated Analog Input Modules User Guide
Specifications
These ratings are typical at 25 °C unless otherwise stated.
Input Characteristics
Number of input channels ...................... 2 NRSE
Isolation.................................................. Bank isolation
(isolation per module
1
)
Input/output signal range, gain,
and bandwidth ........................................ Refer to Table 1
Input impedance
SCC-AI01, SCC-AI02 .................... 1 MΩ
All others......................................... 100 MΩ
Gain error ............................................... 4.5% max (trimmable to zero)
Gain stability .......................................... 150 PPM/°C
Offset error............................................. 40 mV max (RTI
2
)
Offset stability........................................ 225 μV/°C
Nonlinearity ........................................... 0.0128% typ
0.0260% max
Common-mode rejection ratio ............... 100 dB typical at 60 Hz
Output slew rate,
dependent on BW (filtering) .................. 0.8 V/μs max
Filter Characteristics
Number of poles..................................... 3
Rolloff .................................................... 60 dB/decade
Cutoff frequency (–3 dB)
AI0X................................................ 10 kHz
AI1X................................................ 4 Hz
1
The SCC-AI does not provide isolation between the two channels of the module. For more information, refer
to the Connecting the Input Signals section.
2
This specification is calculated relative to the input range of the module.