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A compendium of application circuits for Intersil's digitally-controlled (XDCP) potentiometers

Posted: 01 Sep 2009     Print Version  Bookmark and Share

Keywords:potentiometer  application circuits  XDCP 

This application note lists a number of application circuits for Intersil's digitally-controlled (XDCP) potentiometers. The application circuits, shown in basic form, illustrate the wide variety of possible functions that can be implemented using the variability of the potentiometer in conjunction with standard active devices like operational amplifiers and comparators. The types of circuits include control circuits, converters, filters, signal processing circuits, regulators, waveshapers, analogue computing circuits and signal sources. In the detail design of these circuits, proper supply filtering and proper grounding techniques must be used.

Intersil's potentiometers are controlled through the 2-wire, 3- wire or SPI computer serial-interfaces or buses. For front panel, pushbutton type applications, Intersil's pushpots are recommended.

XDCP potentiometers provide three powerful application advantages:

1. The variability and reliability of a solid-state potentiometer;
2. The flexibility of computer-based digital controls;
3. The retentivity of non-volatile memory used for the storage of multiple potentiometer settings or data.

In addition, the packages of the potentiometers are completely compatible with other electronic components and hence reduce manufacturing assembly costs.

View the PDF document for more information.

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