Measurement Computing CIO-DAS16/330 - Manual (Page 23)

5 SPECIFICATIONS
Power consumption
+5V: 900 mA typical, mA max
Analog input section
A/D converter type AD7800
Resolution 12 bits
Number of channels 8 differential or 16 single-ended, switch-selectable
Programmable ranges ±10V, ±5V, ±2.5V, ±1.25V , ±0.625V, 0 to 10V, 0 to 5V, 0 to 2.5V,
0 to 1.25V, 0 to 0.625V, fully programmable
Polarity Unipolar/Bipolar, software-selectable
A/D pacing Programmable: internal counter or external source (DIG. IN 0 / TRIGGER,
rising edge) or software-polled
A/D Trigger sources External hardware/software (DIG. IN 0 / TRIGGER, active high)
A/D Triggering Modes
Digital: Gated pacer, software polled. (Gate must be disabled by software after
trigger event.)
Data transfer From 1024 sample FIFO via REPINSW, interrupt, DMA or software polled
DMA Channel 1 or 3, switch-selectable
A/D conversion time 3 µs
Throughput 330 kHz
Absolute accuracy 0.01% of reading ±1 LSB
Differential Linearity error ±1 LSB
Integral Linearity error ±1 LSB
No missing codes guaranteed 12 bits
Gain drift (A/D specs) ±25 ppm/°C
Zero drift (A/D specs) ±10 ppm/°C
Common Mode Range ±10V
CMRR @ 60 Hz − 72dB
Input leakage current (@25 Deg C) 200 nA
Input impedance 10 MegOhms min
Absolute maximum input voltage ±35V
Digital Input / Output
Digital type Input: 74LS367
Output: 74LS197
Configuration Two ports, 4 input bits and 4 output bits
Input low voltage 0.8V max
Input high voltage 2.0V min
Output low voltage (IOL = 8 mA) 0.5V max
Output high voltage (IOH = −0 .4 mA) 2.7V min
Absolute maximum input voltage − 0.5V, +7V
Interrupts 2 through 7, 10 and 11, programmable
Interrupt enable Programmable
Interrupt sources A/D End-of-conversion, A/D FIFO-half-full, Residual counter, DMA
terminal count
19