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A digital potentiometer is an electronic component that uses digital control to replicate the analogue operations of a potentiometer. Microcontrollers frequently use it for scaling and cutting analogue signals. A resistor ladder integrated circuit or a digital-to-analog converter can be used to create a digital potentiometer, albeit the former is the more popular.
[Reference needed] The switches that connect each level of the resistor ladder to the output terminal of the potentiometer are located at each step. The resistance ratio of the digital potentiometer is dependent on the ladder step that is chosen. A bit value is typically used to represent the number of steps, e.g., 8 bits equals 256 steps; resolutions between 5 and 10 bits are also possible.
Some digital potentiometers employ the up/down protocols, while others use digital signalling protocols as I2C or Serial Peripheral Interface Bus. Digital potentiometers are frequently used in circuits that call for offset adjustment, small-signal audio balancing, and gain control of amplifiers.
When employed, these digital potentiometers may have their last position stored by the microcontroller or FPGA to which they are interfaced, unlike most digital potentiometers that only use volatile memory and lose their position when powered off. Since certain digipots have their own non-volatile storage, their initial reading will be the same as it was before to powering them off.
The Global EV Digital potentiometer market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
The microchip technology launched single-channel, 8-bit digital ev potentiometer with an SPI serial interface, the MCP41010 has a 10k end-to-end resistance value. Using the SPI interface, the wiper position is changed linearly. The MCP41010 consumes only 1 A while in static operation and has excellent AC and DC characteristics.
Servo-motor control, battery charging and control, communications, power supply, instrumentation gain, offset adjust, LCD contrast adjustment, and programmable filters are some of the applications for the MCP41010 digital potentiometer. The 8-pin PDIP and SOIC packages for the MCP41010 are both available.
