Electronic Design

"Manually Operated Digital Pot" Is Revisited

An idea for design published in the April 2, 2001 issue, "Manually Operated Digital Pot Doesn't Need A Microprocessor," uses two proprietary ICs to manually control a digital potentiometer. After ...
Electronic Design

Manually Operated Digital Pot Doesn't Need A Microprocessor

Digital potentiometer ICs such as the MAX5160 and MAX5161 are good replacements for mechanical types. But these ICs are designed to work with microcontrollers. In ...
EDN

14-pin Digital POT with SPI Serial Interface and Volatile Memory

The MCP41HV31-104E/ST is a digital potentiometer with SPI serial interface and volatile memory. The device has dual power supply that can work in either digital or analog. The potentiometer has a ...
EDN

Digital pot can control gain over a 90 dB span like an electromechanical

A short while back, I published a design idea that uses a single linear pot to control the gain of a high performance OP37 decompensated op-amp over an unusually wide (-30 dB to +60 dB) range. Figure ...
Hackaday

Try A PWMPot

[Stephen Woodward] is familiar with digital potentiometers but is also familiar with their limitations. That spurred him to create the PWMPot which performs a similar function, but with better ...