MCP4632T-503E/MF

Digital Potentiometers Overview

The MCP4632T-503E/MF is a dual-channel digital rheostat featuring 7-bit volatile memory and an I²C serial interface. It provides two independent resistor networks with a nominal resistance of 50 kΩ and 129 adjustable taps. The device operates within a supply voltage range of 1.8V to 5.5V, supporting standard, fast, and high-speed I²C modes up to 3.4 MHz. Key electrical characteristics include a typical wiper resistance of 75 Ω, a bandwidth of 200 kHz at 50 kΩ, and an inactive current of 2.5 µA. It is housed in a DFN 3x3 (MF) package and supports operation from -40°C to +125°C.

Digital Potentiometers Feature Summary

• Dual 7-bit Digital Rheostat: Two independent channels with 129 taps and 50 kΩ nominal resistance.
• I²C Serial Interface: Supports 100 kHz, 400 kHz, and 3.4 MHz clock speeds with high-voltage tolerant inputs.
• Low Power Consumption: Typical inactive current of 2.5 µA and wide operating voltage range of 1.8V to 5.5V.
• DFN 3x3 Package: Compact surface-mount footprint with exposed thermal pad for efficient heat dissipation.

Digital Potentiometers Applications

• Programmable gain amplifiers requiring precise resistance adjustment.
• Voltage reference trimming and calibration circuits.
• Audio volume control and impedance matching applications.
• Sensor biasing and signal conditioning networks.

Digital Potentiometers Procurement Notes

Verify the ordering suffix 'MF' corresponds to the DFN 3x3 package with an exposed thermal pad. Confirm the 'T' indicates tape and reel packaging. Ensure the '-503' suffix matches the required 50 kΩ resistance value. Check for RoHS compliance status as indicated in official documentation.

Digital Potentiometers Selection Notes

Select this component when dual isolated resistive paths are needed with volatile storage. The 7-bit resolution offers 129 steps, suitable for moderate precision applications. Consider the 50 kΩ resistance value against load requirements. Verify that the I²C address configuration via A0/A1/A2 pins fits the system bus topology.

Digital Potentiometers Part Context

This part belongs to the MCP463X family of dual digital potentiometers/rheostats. It shares features with single-channel variants like the MCP4532 but provides two independent channels. The '3' in the model number denotes 7-bit resolution, while '62' indicates dual rheostat configuration with volatile memory.

Digital Potentiometers Replacement Considerations

Direct replacements within the same family include MCP4632T-503E/ML (QFN-16), MCP4632T-503E/MS (MSOP-10), or MCP4632T-503E/UN (MSOP-10). These alternatives offer identical electrical specifications but differ in physical package dimensions and pinout compatibility.