MCP4142-502E/MF

Digital Potentiometers Overview

The MCP4142-502E/MF is a single-channel digital rheostat manufactured by Microchip Technology. It features a 7-bit resolution providing 129 tap positions and a nominal resistance (R_AB) of 5 kΩ. The device utilizes non-volatile memory to retain wiper settings and supports an SPI serial interface operating at frequencies up to 10 MHz. It operates within a supply voltage range of 2.7V to 5.5V for full specifications, with extended operation down to 1.8V for the serial interface only. The component is housed in an 8-lead MSOP package.

Digital Potentiometers Feature Summary

• Non-volatile Memory with WiperLock™ Technology for secure calibration retention
• SPI Serial Interface supporting modes 0,0 and 1,1 with high-speed read/write capabilities
• High-Voltage Tolerant Digital Inputs capable of withstanding up to 12.5V
• Resistor Network Terminal Disconnect Feature via Shutdown pin or TCON Register

Digital Potentiometers Applications

• Gain control in instrumentation amplifiers
• Programmable voltage references
• Digital potentiometer replacement in rheostat configurations
• Calibration storage for application-specific settings

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix 'MF' corresponds to the MSOP-8 package type as defined in the official datasheet. Confirm that the required operating voltage aligns with the 2.7V to 5.5V specification range for guaranteed analog characteristics. Ensure the design accommodates the high-voltage tolerant inputs if interfacing with logic levels exceeding VDD.

Digital Potentiometers Selection Notes

Select this model when a single-channel rheostat configuration with non-volatile memory is required. The 5 kΩ resistance value suits applications needing moderate current handling. Consider the MSOP package dimensions for PCB layout constraints. Verify that the 129-step resolution meets the precision requirements of the target circuit.

Digital Potentiometers Part Context

This component belongs to the MCP414X/416X/424X/426X family of 7/8-bit SPI digital potentiometers with non-volatile memory. The '42' designation indicates a single rheostat configuration, while the '502' suffix specifies the 5 kΩ resistance value. The 'E' denotes industrial temperature range compliance, and 'MF' identifies the MSOP package style.

Digital Potentiometers Replacement Considerations

Direct replacements within the same family include other MCP4142 variants with different resistance values or packages, such as MCP4142-103E/MF (10 kΩ). Cross-family substitution requires verifying interface compatibility and memory type differences.