31 Mar '17, 6pm

DAC simplifies #power supply design:

DAC simplifies #power supply design:

The DAC8775 16-bit DAC from Texas Instruments operates from a single 12-V to 36-V power rail, while an integrated buck/boost converter generates all of the required internal power supplies. By combining a 4–20-mA current and voltage driver with a precision reference and buck/boost converter, the programmable four-channel DAC8775 enables a total system footprint that is up to 25% smaller than the nearest competing device, according to TI. To ensure reliable operation, the DAC8775 offers on-chip diagnostic features, including smart alarms that monitor open load, short circuit, overtemperature, cyclic redundancy check, watchdog timer, and compliance voltage. The device also has an auto-learn function that calculates the load impedance on the 4–20-mA loop and clamps the power supply, resulting in a faster settling time. The DAC8775 has a total unadjusted error of 0.1% FSR over...

Full article: http://www.edn.com/electronics-products/other/4458151/DAC...

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