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Xicor DCPs offer low power dissipation

Posted: 06 Jul 2004 ?? ?Print Version ?Bookmark and Share

Keywords:xicor? digitally controlled potentiometer? dcp? x93156? x93256?

Xicor Inc. announced a family of non-volatile linear taper 32-tap digitally controlled potentiometers (DCPs) with the introduction of the X93156 and X93256.

The dual DCPs in the X93256 feature a three terminal, 32-tap wiper with an independent up/down interface. Along with ultra low power dissipation and supply voltage limits from 2.7V to 5V, the X93156 and X93256 also achieve <0.2 least significant bit (LSB) typical differential nonlinearity (DNL).

By being digitally adjustable, the products can help customers prevent stability issues due to vibration or shock in their systems commonly associated with mechanical potentiometers. In addition, unlike one time programmable or volatile solutions, they integrate nonvolatile memory for the wiper position to eliminate additional high voltage supplies required by one-time programmable products.

The simple up/down interface can be used for personalized environments such as LCD contrast and backlight brightness control in cellphones, PDAs and GPS receivers. The integration of reprogrammable solid-state potentiometers with an up/down interface is important in systems requiring multiple gains, reference voltage and bias calibrations such as common mode amplifier biasing and feedback gain adjustments. Other target applications include process controls requiring parameter retention and data acquisition systems requiring preconfigured reference voltage levels.

Production samples are available in 8-pin MSOP (single) and 14-pin TSSOP (dual) packaging with 1,000-unit prices starting at 56 cents and 95 cents, respectively.

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