Computer/Embedded Technology


PCIe MiniCard I/O board

16 July 2014 Computer/Embedded Technology

The DS MPE DAQ0804 from Diamond Systems is a rugged, low-cost data acquisition PCIe MiniCard module that is ideal for adding analog and digital I/O features to embedded applications requiring low cost, small size and/or light weight.

The board features eight 16-bit analog input channels, four 16-bit analog output channels and 21 configurable digital I/O lines in the 50,95 x 30 mm PCIe MiniCard form factor, with an extended operating temperature of 40°C to +85°C.

The analog inputs offer single-ended and true differential capability, four programmable input ranges and 100 kHz aggregate sample rate. This circuitry includes an integrated programmable timer to control A/D sample rates automatically, resulting in precise timing plus significantly reduced processor overhead compared to software polling techniques. The 2048-sample data FIFO with programmable interrupt threshold further reduces processor overhead by reducing the interrupt rate required to transfer data from the board to the application.

The 16-bit analog outputs offer two programmable output voltage ranges. An integrated precision, low-drift voltage reference ensures a lifetime of accurate performance across the full operating temperature range, and a built-in waveform generator with 2 K sample buffer enables the board to be used in stimulus applications such as sonar, laser light control and others.

The twenty-one buffered digital I/O lines feature programmable direction in groups of 4, 6 and 8 bits, and can be configured as either 24-bit pulse width modulators or 32-bit counter/timers, driven by an onboard 50 MHz clock.

All I/O signals are provided on two miniature connectors; one for the analog signals and one for the digital signals. The connectors feature positive locking for maximum reliability in high-vibration environments.

Diamond’s free Universal Driver software, included with the DS MPE DAQ0804, simplifies programming effort for all the board’s I/O functions under both Windows and Linux operating systems.



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