MCP4021T-503E/SN

Overview

The MCP4021T-503E/SN is a nonvolatile, 6-bit digital potentiometer manufactured by Microchip Technology. It features a 50 kΩ total resistance with 64 taps and utilizes WiperLock™ technology to store the wiper setting in EEPROM. The device operates on a 2.7V to 5.5V supply and uses a simple Up/Down (U/D) serial interface for control. It is housed in an 8-pin SOIC package.

Feature Summary

• Nonvolatile memory with WiperLock™ technology
• Up/Down (U/D) serial control interface
• High-voltage tolerant inputs up to 12.5V
• Extended temperature range (-40°C to +125°C)

Applications

• Audio volume control
• Gain adjustment in instrumentation
• Voltage reference trimming

Procurement Notes

Verify the 'T' suffix indicates tape and reel packaging and the 'SN' suffix specifies the 8-SOIC package. Confirm the '-503' code corresponds to the 50 kΩ resistance value. Ensure the 'E' suffix meets RoHS compliance requirements for your specific manufacturing process.

Selection Notes

Select this component when a single-channel digital potentiometer with nonvolatile storage is required. The U/D interface simplifies control logic compared to SPI or I2C alternatives. Verify that the 50 kΩ resistance and 64-step resolution meet the circuit's precision and power dissipation needs.

Part Context

This part belongs to the MCP4021/2/3/4 family of low-cost nonvolatile digital potentiometers. The MCP4021 variant specifically supports potentiometer configuration, while the 'T' suffix denotes tape and reel packaging suitable for automated assembly processes.

Replacement Considerations

Direct replacements within the same family include MCP4021-503E/SN (tube packaging). Other variants like MCP4022 or MCP4023 share similar electrical characteristics but may differ in pinout or intended configuration.