MCP4141T-104E/SN

Digital Potentiometers Overview

The MCP4141T-104E/SN is a single-channel digital potentiometer IC from Microchip Technology, featuring 129 taps (7-bit resolution) and a nominal end-to-end resistance of 100 kΩ. It utilizes an SPI serial interface for control and incorporates WiperLock™ technology with non-volatile memory to retain wiper settings across power cycles. The device operates within a supply voltage range of 2.7V to 5.5V and supports high-voltage tolerant digital inputs up to 12.5V. Packaged in an 8-pin SOIC, it offers low wiper resistance and extended temperature operation.

Digital Potentiometers Feature Summary

• Non-volatile Memory: WiperLock™ technology stores wiper settings in EEPROM for automatic recall upon power-up.
• High-Voltage Inputs: Digital input pins tolerate voltages up to 12.5V, supporting split-rail applications.
• SPI Interface: Supports standard SPI modes (0,0 and 1,1) with clock frequencies up to 10 MHz.
• Protection Features: Includes hardware write protect (WP pin), software write protect, and brown-out reset protection.

Digital Potentiometers Applications

• Audio equipment volume and tone control
• Servo motor control systems
• Battery charging and management circuits
• Communication line impedance matching
• Instrumentation gain and offset adjustment

Digital Potentiometers Procurement Notes

Verify the package marking and datasheet revision when sourcing. Confirm that the specific ordering suffix matches the required tape-and-reel quantity if applicable. Ensure the design accounts for the moisture sensitivity level and reflow soldering profile specified for the SOIC-8 package.

Digital Potentiometers Selection Notes

Select this component for applications requiring persistent calibration data without external storage. Choose the 100kΩ variant for higher impedance signal paths. Consider the MCP4161T-104E/SN if 8-bit (257 tap) resolution is needed instead of the 7-bit resolution provided by the MCP4141.

Digital Potentiometers Part Context

This part belongs to the MCP414X/416X family of single/dual SPI digital potentiometers with non-volatile memory. It shares the same package and interface as volatile counterparts like the MCP4131 but adds EEPROM capabilities. The '104' suffix denotes the 100 kΩ resistance value, while 'SN' indicates the 8-pin SOIC package.

Digital Potentiometers Replacement Considerations

The MCP4161T-104E/SN is a direct functional replacement offering 8-bit resolution (257 steps) instead of 7-bit. Other family members like the MCP4142 provide rheostat configuration rather than potentiometer. Verify pin compatibility and memory endurance requirements when substituting.