MCP4632T-104E/MF

Digital Potentiometers Overview

The MCP4632T-104E/MF is a dual-channel digital potentiometer IC featuring volatile memory and an I²C serial interface. It provides two independent rheostat configurations with 7-bit resolution, offering 128 taps (129 steps). The total resistance between terminals A and B is nominally 100 kΩ. The device operates within a supply voltage range of 1.8V to 5.5V for general operation, with specified characteristics from 2.7V to 5.5V. It supports I²C clock frequencies up to 3.4 MHz and includes high-voltage tolerant inputs capable of withstanding up to 12.5V.

Digital Potentiometers Feature Summary

• Dual resistor network with 7-bit resolution (128 taps) and 100 kΩ nominal resistance
• I²C serial interface supporting 100 kHz, 400 kHz, and 3.4 MHz speeds
• High-voltage tolerant digital inputs (HVC/A0 pin) up to 12.5V
• Volatile wiper memory with terminal disconnect feature via TCON register

Digital Potentiometers Applications

• Programmable gain amplifiers requiring precise resistance adjustment
• Voltage reference trimming in sensor circuits
• Digital control of analog signal paths in industrial systems

Digital Potentiometers Procurement Notes

Verify the suffix 'MF' corresponds to the DFN 3x3 package with exposed thermal pad as indicated in the device block diagram section of the datasheet. Confirm that the 'T' designation implies tape and reel packaging if required by assembly specifications. Ensure the order part number matches the specific resistance value (104 = 100kΩ) and channel count (632 = Dual Rheostat).

Digital Potentiometers Selection Notes

Select this component when a dual-channel rheostat configuration is needed with high-voltage tolerant logic interfaces. The 7-bit resolution provides 128 discrete steps, suitable for applications not requiring fine 8-bit granularity. The volatile memory requires external retention of settings upon power loss. Verify that the 100 kΩ resistance value aligns with the target circuit impedance requirements.

Digital Potentiometers Part Context

This part belongs to the MCP46XX family of dual digital potentiometers. It shares features with single-channel variants like the MCP453X and non-volatile EEPROM-based counterparts such as the MCP464X. The primary distinction is its dual rheostat architecture and volatile RAM storage, differentiating it from potentiometer-configured or non-volatile models within the same datasheet.

Digital Potentiometers Replacement Considerations

Direct functional substitutes include other MCP4632 variants with different packages (e.g., MCP4632-104E/UN in MSOP) or resistance values. Cross-family replacements like the MCP4652 offer 8-bit resolution but require verification of pin compatibility and voltage specifications.