MCP4022T-202E/CH

Overview

The MCP4022T-202E/CH is a nonvolatile, 6-bit digital potentiometer manufactured by Microchip Technology. It features a nominal resistance of 2.1 kΩ with 64 taps and operates within a supply voltage range of 2.7V to 5.5V. The device utilizes a simple Up/Down (U/D) serial interface for wiper control and incorporates WiperLock™ technology to store settings in internal EEPROM. It is housed in a compact SOT-23-6 surface-mount package and supports an extended operating temperature range from -40°C to +125°C.

Feature Summary

• Nonvolatile memory with WiperLock™ technology for power-on recall of wiper settings
• Simple 2-wire Up/Down (U/D) serial control interface
• High-voltage tolerant digital inputs up to 12.5V
• Low static current consumption of 1 µA maximum

Applications

• Audio volume control circuits
• Variable gain amplifier adjustment
• Voltage reference trimming
• Sensor calibration systems

Procurement Notes

Verify the specific suffix 'CH' against official Microchip documentation to confirm package and tape/reel specifications. Ensure the component meets RoHS compliance requirements for your target market. Confirm that the SOT-23-6 footprint matches your PCB design constraints before finalizing procurement.

Selection Notes

Select this model when a rheostat configuration with nonvolatile storage is required. The 2.1 kΩ value suits low-power signal conditioning applications. Verify that the U/D interface timing meets your microcontroller's output capabilities. Consider the 75 Ω typical wiper resistance impact on circuit accuracy at higher frequencies.

Part Context

This component belongs to the MCP402x family of digital potentiometers. The MCP4022 variant specifically offers a rheostat configuration in a SOT-23-6 package. Other family members include the MCP4021 (potentiometer/SOIC), MCP4023 (potentiometer/SOT-23-6), and MCP4024 (rheostat/SOT-23-5). All share similar electrical characteristics and WiperLock™ functionality.

Replacement Considerations

Direct replacements within the same package and function include MCP4023T-202E/CH (potentiometer mode) or MCP4024T-202E/CH (rheostat mode in SOT-23-5). Cross-package alternatives like MCP4021T-202E/SN require pinout adaptation. Verify EEPROM endurance and interface compatibility when substituting.