MCP4461-103E/ML

Digital Potentiometers Overview

The MCP4461-103E/ML is a quad digital potentiometer IC featuring four independent 8-bit resistor networks with nonvolatile memory. It utilizes an I2C serial interface for control and supports operation within a supply voltage range of 2.7V to 5.5V, with the serial interface functional down to 1.8V. The device offers 257 taps per channel, a typical wiper resistance of 75 Ω, and high-voltage tolerant inputs up to 12.5V. Packaged in a 4x4 mm QFN-20 format, it operates across an extended temperature range of -40°C to +125°C.

Digital Potentiometers Feature Summary

• Quad Resistor Network: Four independent channels with 8-bit resolution (257 taps) and linear taper.
• Nonvolatile Memory: Includes WiperLock™ technology for automatic recall of saved wiper settings upon power-up or brown-out reset.
• High-Speed Interface: Supports I2C communication at standard (100 kHz), fast (400 kHz), and high-speed modes (up to 3.4 MHz).
• High-Voltage Tolerance: Digital input pins tolerate voltages up to 12.5V, enabling split-rail applications.

Digital Potentiometers Applications

• Audio volume control and tone adjustment circuits
• Programmable gain amplifiers and variable attenuators
• Voltage reference trimming and calibration systems
• Industrial process control loop adjustments

Digital Potentiometers Procurement Notes

Verify the specific resistance code suffix '103' corresponds to the required 10 kΩ nominal resistance value. Confirm that the QFN-20 package dimensions align with the PCB footprint design. Ensure the system voltage meets the minimum 2.7V requirement for full analog specification compliance.

Digital Potentiometers Selection Notes

Select this component when four independent digital potentiometers are required in a single package. Choose the 10 kΩ variant over other resistance options based on circuit impedance requirements. Consider the nonvolatile feature if power-loss retention of the wiper position is necessary without external storage.

Digital Potentiometers Part Context

This part belongs to the MCP444X/446X family of quad digital potentiometers. It is distinguished from the volatile MCP443X series by its integrated EEPROM and WiperLock™ functionality. The '103' suffix indicates a 10 kΩ resistance value, while 'ML' denotes the 4x4 QFN-20 package type.

Digital Potentiometers Replacement Considerations

The MCP4461-104E/ML serves as a direct pin-compatible alternative offering the same features but with a 100 kΩ resistance value instead of 10 kΩ. Other family members like the MCP4451 provide similar quad configurations but lack nonvolatile memory.