Measurement Computing PCI-DAS08, Руководство пользователя

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Chapter 4
Specifications
Typical for 25 °C unless otherwise specified.
Specifications in
italic text are guaranteed by design.
Analog input
Table 4-1. Analog input specifications
Parameter Specification
A/D converter type AD1674J
Resolution 12 bits
Ranges ±5 V
A/D pacing Software polled
A/D triggering modes Digital: Software polling of digital input (DIN1) followed by pacer
loading and configuration.
Data transfer Software polled
Polarity Bipolar
Number of channels
8 single-ended
A/D conversion time 10 µs
Throughput 40 kHz typical, PC dependent
Relative accuracy ±1 LSB
Differential linearity error No missing codes guaranteed
Integral linearity error ±1 LSB
Gain drift (A/D specs) ±180 ppm/°C
Zero drift (A/D specs) ±60 ppm/°C
Input leakage current ±60 nA max over temperature
Input impedance 10 MegOhm min
Absolute maximum input voltage ±35 V
Noise distribution (Rate = 1-50 kHz, Average % ± 2 bins, Average % ± 1 bin, Average # bins)
Bipolar (5 V): 100% / 100% / 3 bins
4-1