MCP4541T-104E/MS

Digital Potentiometers Overview

The MCP4541T-104E/MS is a single-channel digital potentiometer IC featuring an I2C serial interface and nonvolatile memory. It provides 129 resistance steps (7-bit resolution) with a nominal end-to-end resistance of 100 kΩ. The device operates within a supply voltage range of 2.7V to 5.5V, supporting standard, fast, and high-speed I2C modes up to 3.4 MHz. Key features include WiperLock™ technology for securing calibration settings in EEPROM, hardware write protection via the WP pin, and high-voltage tolerant inputs capable of withstanding up to 12.5V. It is housed in an MSOP-8 package.

Digital Potentiometers Feature Summary

• I2C Serial Interface: Supports 100 kHz, 400 kHz, and 3.4 MHz clock speeds.
• Nonvolatile Memory: Includes EEPROM for wiper settings and 10 general-purpose memory locations with WiperLock™ security.
• High-Voltage Inputs: Digital input pins tolerate voltages up to 12.5V.
• Resolution: 7-bit resolution providing 129 taps with no missing codes.

Digital Potentiometers Applications

• Audio volume control and tone adjustment
• Sensor biasing and offset calibration
• Variable gain amplifier configuration
• Power supply voltage monitoring and adjustment

Digital Potentiometers Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when ordering. Confirm the 'E' suffix denotes RoHS compliance and halogen-free status. Ensure the design supports the required I2C address configuration via the A1 and A2 pins. Check that the system voltage remains within the 2.7V to 5.5V operational range for full specification adherence.

Digital Potentiometers Selection Notes

Select this model for applications requiring persistent wiper settings after power loss due to its nonvolatile EEPROM. Choose the 100 kΩ variant if higher impedance levels are needed for low-current signal paths. Consider the MCP4551 if 8-bit (257 step) resolution is required instead of the 7-bit resolution provided here. Ensure the PCB layout accommodates the MSOP-8 package dimensions.

Digital Potentiometers Part Context

This component belongs to the MCP45XX family of single-channel digital potentiometers. It shares the same core architecture as the MCP4561 but differs in resolution, offering 7-bit steps compared to the 8-bit steps of the 456x series. It is distinct from the volatile RAM-based MCP4531, which lacks nonvolatile storage capabilities.

Digital Potentiometers Replacement Considerations

The MCP4561T-104E/MS serves as a direct functional substitute with identical pinout and interface, offering increased 8-bit resolution (257 steps). For applications not requiring nonvolatile memory, the MCP4531T-104E/MS may be used, though it resets to mid-scale upon power-up.