Measurement Computing CIO-DAS08/JR-AO - Manual (Page 12)

12
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
Analog output
Table 2. Analog output specifications
Parameter Specification
D/A converter type AD7237
Resolution 12 bits
Number of channels 2
Output ranges ±5V
D/A pacing Software paced
Data transfer Programmed I/O
Offset error ±2 LSB typical, ±5 LSB max
Gain error ±2 LSB typical, ±5 LSB max
Differential nonlinearity ±0.9 LSB max
Relative accuracy ±1 LSB max
Monotonicity Guaranteed monotonic to 12 bits over temperature
D/A gain drift ±25 ppm/°C max
Settling time (10 V step to ±½ LSB) 10 µs max
Current drive ±5 mA
Output coupling DC
Output impedance 0.5 Ohms max
Miscellaneous Update DACs simultaneously