Measurement Computing CIO-DDA06/JR - Manual (Page 14)

Chapter 4
Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.
Analog output
Table 1. Analog output specifications
D/A type AD7237KN
Resolution 12 bits
Number of channels 6 max, 2 installed
Voltage ranges ±5
Offset error ±3 LSB max
Gain error ±5 LSB max
Differential nonlinearity ±0.9 LSB max
Integral nonlinearity ±0.5 LSB
Monotonicity guaranteed
Gain drift ±25 ppm/°C
Settling time (10V step to .01%) 10 µs max
Slew rate 3 V/µs
Current drive ±5 mA min
Output short-circuit current 80 mA typ
D/A pacing Software paced
Data transfer Programmed I/O
Throughput PC dependent
Miscellaneous ƒ Double buffered output latches
ƒ Update DACs individually or simultaneously (jumper selectable)
Digital input / output
Table 2. DIO specifications
Digital type 8255 emulation
Output 74S244
Input 74LS373
Number of channels 24 I/O
Configuration 2 banks of 8, 2 banks of 4, programmable by bank as input or output
Output high 2.4 volts min @ –15 mA
Output low 0.5 volts max @ 64 mA
Input high 2.0 volts min, 7 volts absolute max
Input low 0.8 volts max, –0.5 volts absolute min
Power-up / reset state Input mode (high impedance)
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