Low-cost PC/104 A/D and D/A modules operate from -40 to +85 degrees - Embedded.com

Low-cost PC/104 A/D and D/A modules operate from -40 to +85 degrees


Two new, low-cost PC/104-compatible analog I/O cards were released by WinSystems. The PCM-MIO-G-AD-1 is a 16-channel, 16-bit analog input card and the PCM-MIO-G-DA-1 is an 8-channel, 12-bit analog output card. Both cards support 48-lines of digital I/O. These 90- by 96-mm expansion boards are designed for accurate analog and digital I/O over a -40° to +85°C temperature range, especially for industrial, medical, security, transportation, and Mil/COTS applications. Employing Linear Technologies' precision converters and voltage references, these cards don't require calibration, which results in quick, easy setup and eliminating the need for readjustment and recalibration to installed units in the field.

The input ranges for the PCM-MIO-G-AD-1 are 0-5 V, ±5 V, 0-10 V, and ±10 V. Two independent, 16-bit A/D converters support up to 16 single-ended or eight differential channels or various combinations of both. The conversion speed is 100 ksamples/s. The PCM-MIO-G-DA-1 has eight independent, 12-bit D/A converters on board. The output voltage ranges are 0-5 V, 0-10 V, ±5 V, and ±10 V. All output channels are programmable and can be updated and cleared individually or simultaneously.

Both the PCM-MIO-G-AD-1 and PCM-MIO-G-DA-1 boards have 48 lines of digital I/O individually programmable for input, output, or output with read-back. The lines are TTL-compatible and can sink 12 mA, which supports direct connection to industry-standard, optically isolated ac and dc signal conditioners. Isolated signal conditioners protect, filter, and isolate the analog input and output signals from electrical transients.

Both cards are supplied with free drivers for C, Linux, and Windows XP Embedded. The PCM-MIO-G-AD-1 list price is $249 and the PCM-MIO-G-DA-1 list price is $279. For either of the products, delivery is from stock to three weeks.

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