Measurement Computing CIO-DAS16/M1/16 - Manual (Page 21)

7 SPECIFICATIONS
Analog input section
A/D converter type Datel ADS-30356 Subranging
Resolution 16 bits
Programmable ranges ±5V, ±2.5V, ±1.25V, ±.625V, 0 to 10V, 0 to 5V, 0 to 2.5V, 0 to 1.25V
A/D pacing Programmable: internal counter or external source (Din0, rising edge) or
software polled
Burst mode intersample time 1 µs
Data transfer Word wide from 1k sample FIFO via REP INSW, interrupt, DT Connect
or software polled
Polarity Unipolar/Bipolar software selectable, 10 ms delay switching
Number of channels 8 differential
A/D Trigger sources External trigger/gate (DIN1)
A/D Triggering Modes
Digital: Software configurable for edge (triggered) or level-activated (gated).
Programmable polarity (rising/falling edge trigger, high/low gate).
A/D conversion time 1 µs
Throughput 1 MHz max
Differential Linearity error ±1 LSB max
Integral Linearity error ±6 LSB max
Offset Error ±10 LSB max 1
Common Mode Range +11V,
−6V
CMRR (60Hz, Vin = CMR) 90dB
No missing codes guaranteed 16 bits
Gain drift (A/D specs) ±30 ppm/°C, all ranges
Input leakage current (@25 Deg C) < 200 nA
Input impedance Min 10 MegOhms
Absolute maximum input voltage ±15V
Digital Input / Output
Digital Type (Main Connector)
Input: 74LS244
Output: 74LS197
Configuration Two dedicated ports, 4 input and 4 output
Output High 2.7 volts @
−0.4mA min
Output Low 0.4 volts @ 8 mA min
Input High 2.0 volts min, 7 volts absolute max
Input Low 0.8 volts max,
−0.5 volts absolute min
Digital Type (Auxiliary Connector) 82C55
Configuration 2 banks of 8, 2 banks of 4, programmable by bank as input or output
Output High 3.0 volts min @
−2.5mA
Output Low 0.4 volts max @ 2.5mA
17
1 Offset error can be trimmed to zero by adjusting the offset potentiometer for zero offset at the sampling
frequency to be used.