Measurement Computing CIO-DAS08/JR - Manual (Page 13)

13
Chapter 3
Specifications
Typical for 25°C unless otherwise specified.
Specifications in italic text are guaranteed by design.
Analog input
Table 1. Analog input specifications
Parameter Specification
A/D converter type AD574
Resolution 12 bits
Number of channels 8 single-ended
Input ranges ±5 V
A/D pacing Software polled
Data transfer Software polled
A/D conversion time 25 µs
Throughput System dependant
Gain drift (A/D specs) ±50 ppm/°C
Zero drift (A/D specs) ±10 ppm/°C
Absolute maximum input voltage ±30 V continuous
Noise Distribution (Rate = N/A, Average % +/- 2 bins, Average % +/- 1 bin, Average # bins)
Bipolar (5 V) 100% / 100% / 3 bins
Digital input/output
Table 2. Digital I/O specifications
Digital type Output 74LS273
Input 74LS244
Configuration 8 fixed input, 8 fixed output
Number of channels 8
Output high 2.7 volts min @ -0.4 mA
Output low 0.5 volts max @ 8 mA
Input high 2.0 volts min, 7 volts absolute max
Input low 0.8 volts max, -0.5 volts absolute min
Power consumption
Table 3. Power consumption specifications
+5V 200 mA typical, 240 A max
+12V 17 mA typical, 22 mA max
-12V 28 mA typical, 36 mA max