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Eight and Sixteen Channel 16-Bit Analog Output Cards (ISA Bus)



  • Eight or Sixteen independent double-buffered analog outputs
  • 16-Bit resolution
  • Four Voltage Output Ranges: 0-5V, 0-10V, 5V, 10V
  • Individual range selection per channel
  • Channel-by-channel or simultaneous update modes
  • Outputs held at zero volts at power-up
  • Unique "Software Clear" function permits DAC reset without resetting counters
  • Optional DC-DC Converter for 10 V output ranges
  • Setup and calibration software included

The D/A16-08 and D/A16-16 are full-size cards that can be installed in any long I/O slot of PC-AT class computers. They contain either 8 or 16 double-buffered digital-to-analog converters (DAC) and provide 8 or 16 independent analog output channels of 16-bit resolution.

The analog output channels have a double-buffered input for single-step update and each is addressed at its own I/O location. The DACs have a two-byte (8LSB's 8MSB's) loading structure. The analog outputs can be updated either independently or simultaneously.

In order to prevent excessive outputs at power-up, D/A16-08 and D/A16-16 contain automatic circuits that set D/A outputs to less than 15% of span at system power-on. Upon power-up, the DAC reference voltage is set to a low voltage and the card is set in the Simultaneous Update mode. After all DAC's have been loaded with the desired values, a software command can be used to switch the reference voltage ON at its nominal value. Similarly, a software command can be used at any time to set the reference voltage to zero causing all DAC outputs to be zero volts.

The cards also support a unique "Software Clear" capability. This feature permits resetting the DAC output to zero volts without changing the output mode.

Operation on 10 V ranges requires optional DC-DC converter as PC computer supply is marginal.


Analog Outputs

  • Resolution: 16 bits
  • Channels: Eight or Sixteen, Independent
  • Voltage Output Ranges at 5mA max.:
    0-5 VDC, 0-10 VDC, 5.0 VDC, 10.0 VDC
  • Short-circuit current: 25 mA maximum
  • Output resistance: Less than 0.1 ohm

Digital to Analog Converter

  • AD660 double-buffered monolithic chip
  • Relative Accuracy: 0.003% of Full Scale
  • Linearity: 1 LSB integral non-linearity over rated temperature range
  • Monotonicity: 15 bits over entire operating temperature range
  • Settling time: 8 uSec to 0.0008% for full scale step input
  • Gain Temperature Drift: 20 ppm/°C typ.


  • Operating Temperature: 0 to 60 degree C.
  • Storage Temperature: -20 to 85 degree C.
  • Humidity: 5% to 95% non condensing.
  • Size: 13.130 inches. Install in a full-size slot.

Power Requirements

  • 5 VDC at 2.5 max. for fully populated 16 channel card
  • 15 VDC provided by DC-DC converter from 5 supply

Regulatory Compliance

  • This product is in full compliance with CE requirements.

Part Number Price(USD)
DC-DC Converter
View / Download Manual (in .pdf format)
Acquisition Control Communications Engineering / Systems
USA Office

Address: 1480 Gulf Road, Suite 837,
PO Box 1280
Point Roberts, WA 98281

Western Canada - Vancouver BC

Tel:1.800.663.6001 or 1.604.925.6150
Address: 2454 Haywood Ave
West Vancouver, BC V7V 1Y1

Eastern Canada - Markham, Ontario

Tel:1.800.465.0164 or 1.905.513.7027