Dual digitally controlled potentiometers

With the introduction of the X93254, Xicor is claiming the first dual, non-volatile, linear taper 32-tap digitally controlled potentiometer (DCP).  The device offers two low power DCPs in a single package to address new market needs for high volume and space constrained applications.

Both of the DCPs in the X93254 feature separate 32-tap wipers with independent up/down interfaces.  Along with dissipating low power of 1µA maximum standby supply current, the X93254 also achieves less than ±0.2 least significant bit typical differential non-linearity.

By being digitally adjustable, the X93254 helps prevent stability issues due to vibration or shock in systems commonly associated with mechanical potentiometers. Furthermore, the X93254 integrates non-volatile memory for the wiper position to help lower the programming current and to eliminate additional high voltage supplies required by one-time programmable products.

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

Production samples of the X93254 series are available in 14-lead TSSOP packaging.