MCP4362-503E/ST

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MCP4362-503E/ST consistent of a single-channel digital potentiometer with onboard EEPROM memory. This device is a non-volatile memory device which provides a digitally programmable resistor with 100 position resolution. A rich mixture of digital control and programmability are at ease with a simple serial interface.

The MCP4362 series digital potentiometer provides 100 ohm static resistance array on low resistance and high resolution wiper-switch combination. The product consists of two components: a memory section and a digital potentiometer section. The memory section made up of EEPROM cells stores data observed at every position of the 100 resistor array. Data is programmed and cleared as required by the user.

Application fields for the MCP4362-503E/ST digital potentiometer include volume and brightness level adjustments, LED brightness control, power supply voltage programming and motor speed control. Furthermore, thanks to the device’s non-volatility, system level calibration does not require any special circuitry.

The working principle of the MCP4362-503E/ST is that the wiper position is set by the user(s) via a serial interface. The wiper position is provided as an increase or decrease relative to the EEPROM values that were previously programmed. Once the wiper position is established relative to the programmed position, the voltage across the series resistance will depend on the digital values programmed into the EEPROM.

The digital potentiometer controls a varying voltage or current value, depending on the values it registers, while the EEPROM stores the set values. The digital potentiometer always stays in the last known ON position even after power-down. The preset values in the EEPROM and the current wiper position will define the resistance. The gain of the resistor is affected by the amplitude of the step increases and decreases programmed in the EEPROM.

The MCP4362-503E/ST digital potentiometer is capable of providing a variety of application solutions, from simple volume and brightness level adjustments to more advanced motor speed control and LED brightness control. Because the device is non-volatile, the user can reset the resistor without special circuitry. Furthermore, through the device’s simple serial interface new data can be programmed and the existing data can be changed, allowing for an accurate adjustment of digital potentiometer resistance with a high level of flexibility.

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