MCP4141-503E/MS

Digital Potentiometers Overview

The MCP4141-503E/MS is a single-channel digital potentiometer featuring non-volatile memory and WiperLock technology. It offers 129 resistance steps with a nominal end-to-end resistance of 50 kΩ. The device operates on a supply voltage ranging from 2.7V to 5.5V, supporting serial SPI communication at frequencies up to 10 MHz. Key electrical characteristics include a typical wiper resistance of 75 Ω and an inactive interface current of 2.5 µA. It provides hardware and software write protection, high-voltage tolerant inputs up to 12.5V, and functions within an extended temperature range of -40°C to +125°C.

Digital Potentiometers Feature Summary

• Non-volatile EEPROM storage with WiperLock™ Technology for secure calibration settings
• SPI serial interface supporting modes 0,0 and 1,1 with data rates up to 10 MHz
• High-voltage tolerant digital inputs (CS, SCK, SDI) capable of withstanding up to 12.5V
• Hardware (WP pin) and software write protect features to prevent accidental updates

Digital Potentiometers Applications

• Audio volume control and tone adjustment circuits
• Programmable gain amplifiers and sensor signal conditioning
• Voltage reference trimming and bias setting
• Industrial process control loop calibration

Digital Potentiometers Procurement Notes

Verify the ordering suffix 'MS' corresponds to the MSOP-8 package when sourcing components. Confirm that the '-503' designation matches the required 50 kΩ resistance value for the specific circuit design. Ensure the E version meets environmental compliance requirements if applicable to the target market regulations.

Digital Potentiometers Selection Notes

Select this component for applications requiring persistent wiper position retention after power cycles. The 50 kΩ resistance value suits moderate impedance circuits; lower values like 5 kΩ are available for higher current handling. Verify that the system logic levels align with the SPI interface requirements or utilize the high-voltage tolerant inputs for level shifting scenarios.

Digital Potentiometers Part Context

This part belongs to the MCP414X family of single-channel SPI digital potentiometers. It shares architectural similarities with the MCP416X series but differs in resolution, offering 7-bit (129 steps) compared to the 8-bit (257 steps) of the 416X variant. It is distinct from the MCP42X series, which integrates dual resistor networks instead of a single channel.

Digital Potentiometers Replacement Considerations

The MCP4141-503E/SO serves as a pin-compatible alternative in the SOIC-8 package. For applications requiring higher resolution, the MCP4161-503E/MS provides 257 steps with identical pinout and functionality.