MCP4532T-503E/MF

Digital Potentiometers Overview

The MCP4532T-503E/MF is a single-channel digital rheostat manufactured by Microchip Technology. It features a 7-bit resolution providing 129 taps and a nominal resistance of 50 kΩ (suffix -503). The device utilizes volatile RAM for wiper storage and communicates via an I²C serial interface supporting standard, fast, and high-speed modes up to 3.4 MHz. It operates within a supply voltage range of 1.8V to 5.5V and includes high-voltage tolerant inputs up to 12.5V. The component is housed in an 8-pin DFN 3x3 mm package with an exposed thermal pad.

Digital Potentiometers Feature Summary

• Single Rheostat Configuration with 7-bit Resolution (129 Taps)
• I²C Serial Interface Supporting 100 kHz, 400 kHz, and 3.4 MHz
• High-Voltage Tolerant Digital Inputs (up to 12.5V)
• Volatile Memory with Brown-Out Reset Protection

Digital Potentiometers Applications

• Variable Gain Amplifier Control
• Voltage Reference Adjustment
• Sensor Biasing Networks

Digital Potentiometers Procurement Notes

Verify the 'T' suffix indicates tape-and-reel packaging and the 'MF' suffix denotes the DFN 3x3 mm package with an exposed thermal pad. Confirm the '-503' code corresponds to the 50 kΩ resistance value. Ensure the specific revision of datasheet DS22096B is referenced for accurate electrical parameters.

Digital Potentiometers Selection Notes

Select this model for applications requiring a single variable resistor controlled digitally via I²C. The 7-bit resolution offers 128 steps, suitable for moderate precision adjustments. Note that the memory is volatile; wiper settings are lost upon power cycle unless reprogrammed. The wide operating voltage range supports both 1.8V and 5V logic systems.

Digital Potentiometers Part Context

This part belongs to the MCP453X/455X/463X/465X family of digital potentiometers. The MCP4532 variant specifically provides a single rheostat configuration with volatile memory. It shares the same interface and core architecture as the potentiometer version (MCP4531) but differs in terminal connectivity for variable resistance applications.

Digital Potentiometers Replacement Considerations

Direct pin-compatible replacements within the same family include MCP4531-503E/MF (Potentiometer config) or MCP4552-503E/MF (8-bit resolution). Verify that the replacement maintains the required resolution and memory type (volatile vs. non-volatile).