MCP4662-502E/UN

Digital Potentiometers Overview

The MCP4662-502E/UN is a dual-channel digital potentiometer IC manufactured by Microchip Technology. It features two independent rheostat configurations with an end-to-end resistance (RAB) of 5 kΩ and a tolerance of ±20%. The device provides 8-bit resolution, offering 257 discrete taps for precise adjustment. It utilizes an I2C serial interface supporting standard, fast, and high-speed modes up to 3.4 MHz. Key specifications include a typical wiper resistance of 75 Ω, nonvolatile memory for wiper settings, and operation across a supply voltage range of 1.8V to 5.5V.

Digital Potentiometers Feature Summary

• Dual Rheostat Configuration: Contains two independent resistor networks configured as variable resistors.
• Nonvolatile Memory: Stores wiper settings in EEPROM, enabling automatic recall upon power-up.
• High-Speed I2C Interface: Supports communication speeds of 100 kHz, 400 kHz, and up to 3.4 MHz.
• Wide Operating Voltage: Functional from 1.8V to 5.5V, with analog characteristics specified from 2.7V to 5.5V.

Digital Potentiometers Applications

• Programmable gain amplifiers requiring digital control
• Voltage reference trimming and calibration
• Audio volume control circuits
• Sensor bias adjustment

Digital Potentiometers Procurement Notes

Verify the specific suffix 'UN' corresponds to the MSOP-10 package when sourcing. Confirm that the '-502' designation matches the required 5 kΩ resistance value. Ensure the selected variant supports the necessary I2C clock speed for the target application, as performance varies with bus frequency.

Digital Potentiometers Selection Notes

Select this component for applications requiring dual isolated variable resistors with persistent settings. The 5 kΩ resistance value suits moderate current loads. For single-channel requirements, consider the MCP4661 variant. If volatile memory is acceptable, the MCP4632 offers a lower-cost alternative without EEPROM.

Digital Potentiometers Part Context

This part belongs to the MCP46XX family of I2C digital potentiometers. It shares the same core architecture and pinout compatibility as other devices in the MCP454X/456X/464X/466X series, differing primarily in channel count, memory type, and resolution.

Digital Potentiometers Replacement Considerations

The MCP4662T-502E/UN is the tape-and-reel version of this component. Other family members like the MCP4661 offer single-channel functionality with identical electrical characteristics.