MCP4141-104E/MF

Digital Potentiometers Overview

The MCP4141-104E/MF is a single-channel, 7-bit non-volatile digital potentiometer manufactured by Microchip Technology. It features a 100 kΩ resistance between terminals A and B with 128 discrete taps. The device operates on a supply voltage ranging from 2.7V to 5.5V and utilizes a high-speed SPI serial interface for communication. Key specifications include a typical wiper resistance of 75 Ω, an extended operating temperature range of -40°C to +125°C, and WiperLock™ technology for secure calibration settings.

Digital Potentiometers Feature Summary

• Non-volatile memory with automatic recall of saved wiper settings upon power-up.
• High-voltage tolerant digital inputs capable of withstanding up to 12.5V.
• SPI serial interface supporting modes 0,0 and 1,1 at frequencies up to 10 MHz.
• Resistor network terminal disconnect feature via Shutdown pin or TCON register.

Digital Potentiometers Applications

• Gain control in audio and instrumentation circuits
• Voltage reference adjustment
• Programmable filter frequency setting
• Calibration of sensor signal conditioning

Digital Potentiometers Procurement Notes

Verify the package designation 'MF' corresponds to the specific footprint required for the design, as this suffix typically indicates a DFN variant. Confirm that the system's SPI controller supports the required clock speeds and mode configurations. Ensure input signals on digital pins remain within the specified high-voltage tolerance limits during operation.

Digital Potentiometers Selection Notes

Select this component when a single-channel, non-volatile digital potentiometer is required. The 100 kΩ value suits applications needing higher impedance networks. Verify that the 7-bit resolution (128 steps) meets the precision requirements, as opposed to the 8-bit variants available in the series. Ensure the PCB layout accommodates the thermal pad if using the DFN package.

Digital Potentiometers Part Context

This part belongs to the MCP41XX family of single-channel digital potentiometers. It shares the same core architecture and interface as other members like the MCP4141-103E/P but differs in resistance value and package type. The 'MF' suffix distinguishes it from PDIP or SOIC packages, indicating a surface-mount DFN form factor suitable for compact designs.

Digital Potentiometers Replacement Considerations

Direct replacements within the same family include other MCP4141 variants with different resistance values or packages, such as MCP4141-103E/SN. For dual-channel needs, consider the MCP4241 series. Ensure any substitute maintains the non-volatile memory requirement and SPI compatibility.