MCP4461-502E/ML

Digital Potentiometers Overview

The MCP4461-502E/ML is a quad resistor network digital potentiometer featuring nonvolatile memory and an I2C serial interface. It provides four independent potentiometers with 8-bit resolution, offering 257 taps for precise resistance adjustment. The nominal end-to-end resistance (RAB) is 5 kΩ, with a typical wiper resistance of 75 Ω. Operating on a single supply voltage ranging from 2.7 V to 5.5 V, the device supports standard, fast, and high-speed I2C modes up to 3.4 MHz. It includes WiperLock technology to prevent unauthorized changes and features a dedicated reset pin.

Digital Potentiometers Feature Summary

• Quad Resistor Network: Four independent potentiometers with 8-bit resolution (257 taps).
• Nonvolatile Memory: Retains wiper settings via EEPROM; supports WiperLock technology.
• I2C Interface: Supports 100 kHz, 400 kHz, and 3.4 MHz clock frequencies.
• High Voltage Inputs: Digital inputs tolerate up to 12.5 V, enabling split-rail applications.

Digital Potentiometers Applications

• Audio volume control and tone adjustment circuits.
• Programmable gain amplifiers and sensor signal conditioning.
• Voltage reference trimming and calibration systems.
• Industrial process control requiring remote resistance adjustment.

Digital Potentiometers Procurement Notes

Verify the specific resistance suffix '502' corresponds to the required 5 kΩ value during sourcing. Confirm package availability in QFN-20 format. Check datasheet revisions for any updates to electrical characteristics or recommended operating conditions before finalizing component selection.

Digital Potentiometers Selection Notes

Select this model when four isolated potentiometers are needed with persistent state retention. Ensure the system operates within the 2.7 V to 5.5 V supply range. For applications requiring higher speed than I2C allows, consider SPI-based alternatives. Verify that the 5 kΩ resistance matches the load requirements and current limits specified in the electrical characteristics.

Digital Potentiometers Part Context

This component belongs to the MCP446X family of quad digital potentiometers. It shares the same pinout and core functionality as the MCP4462, which offers rheostat configuration instead of potentiometer. The 'E' indicates industrial temperature range, and '/ML' specifies the 4x4 mm QFN-20 package.

Digital Potentiometers Replacement Considerations

The MCP4461-102E/ML serves as a direct functional substitute if a 10 kΩ resistance is acceptable. Other members of the MCP446X series share identical pinouts and software compatibility but differ in resistance values or terminal configurations.