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High-voltage DCPs reduce complexity

Edited by the Electronicstalk editorial team Sep 8, 2003

Expanding its digitally controlled potentiometer product line, Xicor has released the X9319 family of 100-tap nonvolatile digitally controlled potentiometers.

Expanding its digitally controlled potentiometer product line, Xicor has released the X9319 family of 100-tap nonvolatile digitally controlled potentiometers (DCPs).

The crucial fact concerning the X9319 is that it will accommodate a voltage swing of between 0 and 10V for an increased dynamic range, making the devices well-suited for applications such as offset and bias voltage adjustments in high voltage amplifier and regulator designs.

The X9319 family of potentiometers features 100 taps with 99 segmented resistors and is available in 10 and 50kohm total resistance options.

Adjustments to the wiper position are made using a simple up/down interface and the position can be stored in the internal EEPROM for recall during device power-up.

By using the on-chip EEPROM, system designers lower cost by eliminating the need for an initialising microcontroller in their solution.

The up/down interface allows efficient wiper position calibration for reduced manufacturing cost in bias and control applications.

The programmability of the X9319 is a key component in high voltage systems requiring gain, reference voltage and bias calibrations such as common mode biasing in RF power amplifiers and gain adjustments in audio applications.

Other target applications include signal-conditioning circuits to set zero offset and span correction for sensors, adjustments in process controls requiring parameter retention, and data acquisition systems requiring pre-configured reference voltage levels.

Many commercial and industrial applications require the flexibility of a potentiometer with an increased voltage capability.

The X9319 is a cost-effective solution to accommodate high voltage supply applications.

Xicor will be offering an evaluation kit and software support for this product.

Production samples are available in 8-lead SOIC and PDIP packaging.