MCP4022T-103E/CH

Overview

The MCP4022T-103E/CH is a nonvolatile, 6-bit digital potentiometer manufactured by Microchip Technology. It features a 10 kΩ nominal resistance with 64 taps and operates within a supply voltage range of 2.7V to 5.5V. The device utilizes an Up/Down (U/D) serial interface for wiper control and incorporates WiperLock™ technology to store settings in internal EEPROM. Designed for rheostat configurations, it offers low power consumption with a maximum static current of 1 µA and high-voltage tolerant inputs up to 12.5V.

Feature Summary

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

Applications

• Battery-powered portable devices requiring low standby current
• Industrial systems needing high-voltage tolerant control interfaces
• Audio volume or gain adjustment circuits
• Sensor biasing and calibration applications

Procurement Notes

Verify the package type 'CH' corresponds to the SOT-23-6 configuration as specified in the datasheet. Confirm the 'E' suffix indicates extended temperature range operation from -40°C to +125°C. Ensure the 'T' suffix matches the required tape and reel packaging format for automated assembly processes.

Selection Notes

Select this component when a rheostat configuration is required rather than a potentiometer setup. The U/D interface is suitable for microcontrollers with limited I/O pins. Consider the 10 kΩ resistance value against load requirements and ensure the 12.5V input tolerance aligns with the control signal levels present in the system design.

Part Context

This part belongs to the MCP4021/2/3/4 family of low-cost nonvolatile digital potentiometers. While the MCP4021 and MCP4023 are configured as potentiometers, the MCP4022 and MCP4024 are specifically designed for rheostat applications. All variants share similar electrical characteristics but differ in terminal availability and package options.

Replacement Considerations

Direct replacements include other MCP4022 variants with different resistance values or packages, such as MCP4022T-502E/CH (5 kΩ) or MCP4022T-103E/MF (10 kΩ in MSOP). Cross-family substitutes like the MCP41 series require SPI interface compatibility checks.