Offered in single and dual packages at highly competitive prices, Xicor's X93155 and X93255 are ultra low power, digitally controlled potentiometers (DCPs) that address new market needs for high volume and space constrained applications. By being digitally adjustable, the devices can help customers prevent stability issues due to vibration or shock in their systems commonly associated with mechanical potentiometers. The DCPs in the X93155 and X93255 feature 32-tap wipers with an independent up/down interface. Along with dissipating ultra low power " standby current is 2.0mA maximum, active current is 200mA typical " the devices operate from a supply voltage at 5V 10%, and achieve less than 0.2 least significant bit (LSB) typical differential non-linearity (DNL). Furthermore, unlike one-time programmable or volatile solutions, the units integrate 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 simple up/down interface can be used for personalized environments such as LCD contrast and backlight brightness control in cell phones, PDAs and GPS receivers. The integration of reprogrammable, solid-state potentiometers with an up/down interface is important in systems requiring multiple gains, and in reference voltage and bias calibration applications 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. Xicor Ltd, Witney, Oxford OX8 GFE, UK.
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