MCP4022T-202E/CHVAO

Overview

The MCP4022T-202E/CHVAO is a nonvolatile, 6-bit digital potentiometer from Microchip Technology. It features a 2.1 kΩ resistance value with 64 taps and utilizes a simple Up/Down (U/D) serial interface for wiper control. The device operates within a voltage range of 2.7V to 5.5V and includes WiperLock™ technology to secure settings in EEPROM. It offers low power consumption with a maximum static current of 1 µA and high-voltage tolerant inputs up to 12.5V. The component is housed in a SOT-23-6 package and supports an extended operating temperature range from –40°C to +125°C.

Feature Summary

• Nonvolatile memory with WiperLock™ technology for secure setting retention
• Simple 2-wire Up/Down (U/D) serial control interface
• High-voltage tolerant digital inputs supporting up to 12.5V
• Low power operation with 1 µA maximum static current

Applications

• Audio volume control circuits
• Gain adjustment in instrumentation amplifiers
• Voltage reference trimming
• LED brightness control

Procurement Notes

Verify the specific suffix 'VAO' against official Microchip documentation to confirm environmental or compliance specifications. Ensure the ordering code matches the required package type and temperature grade. Cross-reference the part number with authorized distributors to confirm availability and authenticity.

Selection Notes

Select this component for applications requiring nonvolatile resistance adjustment with minimal pin count. The 2.1 kΩ value suits low-impedance signal paths. Consider the U/D interface compatibility with the host controller. Verify that the 12.5V input tolerance meets the system's control signal levels.

Part Context

This part belongs to the MCP4021/2/3/4 family of low-cost nonvolatile digital potentiometers. The MCP4022 variant specifically provides a rheostat configuration in a SOT-23-6 package. It shares core features like WiperLock™ technology and the U/D interface with other members of the series, differing primarily in package and terminal configuration.

Replacement Considerations

Direct replacements include other MCP4022 variants with different resistance values or packages. For functional equivalence, consider MCP4021 or MCP4023 if potentiometer mode is acceptable. Ensure any substitute maintains the 2-wire U/D interface and nonvolatile memory characteristics.