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Digital Potentiometers Enable Precision Calibration

Sun, 08/03/2008 - 7:10am

AD529x digiPot ICExhibiting less than 1% end-to-end resistor tolerance (RTol) error over a ±15-V supply range, Analog Devices' AD529x family of single-channel, 10-bit programmable digital potentiometers (digiPot) offer up to 20 times better performance than similar devices. Available in three versions, the parts offer improved system accuracy in demanding applications such as industrial control systems and medical instrumentation. Created using the industrial CMOS process, the devices support dual power supplies in the ±10.5 to ±15-V range and single supply operation from 21 to 30 V.  The 1024-tap AD5292 and pin-compatible, 256-tap AD5291 digiPot feature a 20-times-programmable memory. The wiper setting of these two devices is controlled through an SPI-compatible port. An internal fuse is blown to permanently save the wiper position. Triggered by a simple software command, no external power supply is required to program the device. From $2.29 each in 1,000-unit quantities.

Analog Devices
www.analog.com 

For more information, visit www.analog.com/pr/AD529x.

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