MCP4241T-103E/ML

Digital Potentiometers Overview

The MCP4241T-103E/ML is a dual-channel, non-volatile digital potentiometer manufactured by Microchip Technology. It features two independent 7-bit resistor networks with 128 taps and a nominal resistance of 10 kΩ (indicated by the '103' suffix). The device utilizes WiperLock™ technology to store wiper settings in Data EEPROM, ensuring retention after power loss. It communicates via a standard SPI interface supporting up to 10 MHz at VDD ≥ 2.7V. Key electrical characteristics include a typical wiper resistance of 75 Ω, an operating voltage range of 2.7V to 5.5V, and high-voltage tolerant digital inputs capable of withstanding up to 12.5V.

Digital Potentiometers Feature Summary

• Dual Potentiometer Configuration: Two independent channels with 129 steps (7-bit resolution) and 10 kΩ nominal resistance.
• Non-Volatile Memory: Integrated Data EEPROM retains wiper positions upon power cycling using WiperLock™ technology.
• High-Voltage Tolerant Inputs: Digital control pins (CS, SCK, SDI, WP, SHDN) tolerate voltages up to 12.5V.
• SPI Interface: Supports Mode 0,0 and Mode 1,1 with clock frequencies up to 10 MHz for high-speed read/write operations.

Digital Potentiometers Applications

• Audio volume control and tone adjustment circuits
• Programmable gain amplifiers and sensor signal conditioning
• Industrial process control calibration and trimming
• Variable biasing for analog-to-digital converters

Digital Potentiometers Procurement Notes

Verify the package marking code 'ML' corresponds to the 8-lead MSOP package as specified in the datasheet. Confirm that the ordering suffix matches the required temperature range (-40°C to +125°C) and resistance tolerance (±20%). Ensure the specific revision of DS22059B aligns with the manufacturing date code on the component.

Digital Potentiometers Selection Notes

Select this model when dual-channel adjustment is required without external memory. The 10 kΩ value suits moderate impedance applications; use -503 or -104 suffixes for higher resistance needs. The non-volatile feature eliminates the need for backup batteries. Ensure the host microcontroller supports SPI Mode 0 or 1 and can handle the 12.5V input tolerance if interfacing with higher voltage logic levels.

Digital Potentiometers Part Context

This component belongs to the MCP414X/416X/424X/426X family of SPI digital potentiometers. Unlike volatile counterparts (e.g., MCP413X), the MCP424X series includes EEPROM for data retention. It serves as a direct replacement for mechanical potentiometers in space-constrained PCB designs requiring precise, digitally controlled resistance adjustments.

Digital Potentiometers Replacement Considerations

For single-channel requirements, consider the MCP4141. For 8-bit resolution, select from the MCP4261 series. Volatile alternatives like the MCP4231 lack EEPROM but operate at lower voltages (1.8V).