Measurement Computing CIO-DAS16Jr/16 - Manual (Page 22)

4 SPECIFICATIONS
POWER CONSUMPTION
+5V quiescent 850 mA typical, 1250 mA max
ANALOG INPUT SECTION
A/D converter type AD7805PB
Resolution 16 bits
Number of channels 8 differential or 16 single-ended (switch-selectable)
Input ranges ±10V, ±5V, ±2.5V, ±1.25V, 0 to 10V, 0 to 5V, 0 to 2.5V, 0 to
1.25V, fully programmable
Polarity Unipolar/Bipolar programmable, 11 ms max switching delay
A/D pacing Programmable: internal counter or external source (DIG. IN 0 / TRIGGER,
rising edge) or software polled
A/D Trigger sources External polled gate trigger (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 DMA, interrupt or software polled
DMA Channels 1 and 3, switch-selectable
DMA enable Programmable
A/D conversion time 10 µs
Throughput 100 kHz typical, PC dependent
Absolute accuracy 0.0023% of reading ±1.5 LSB
Differential Linearity error +1.5/-1 LSB
Integral Linearity error ±1.5 LSB
No missing codes (guaranteed) 16 Bits
Gain drift (A/D specs) ±10 ppm/°C
Zero drift (A/D specs) ±5 ppm/°C
Common Mode Range ±10V
CMRR @ 60 Hz
−
96 dB
Input leakage current (@ 25 deg C) 200 nA
Input impedance 30 Meg
Ω
Absolute maximum input voltage ±35V
DIGITAL I/O SECTION
Digital type
Output 74LS197
Input 74LS244
Configuration 4 fixed input, 4 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
Interrupts Programmable: levels 2 thru 7
Interrupt enable Programmable
Interrupt sources A/D End-of-conversion, DMA terminal count
18