MCP4532T-104E/MF

Digital Potentiometers Overview

The MCP4532T-104E/MF is a single-channel digital rheostat from Microchip Technology, featuring an I²C serial interface. It provides 7-bit resolution with 129 discrete taps and offers a nominal resistance (RAB) of 100 kΩ. The device operates on a supply voltage range of 1.8V to 5.5V and utilizes volatile RAM for wiper storage. Key electrical characteristics include a typical wiper resistance of 75Ω, a bandwidth of 100 kHz at the 100kΩ setting, and high-voltage tolerant digital inputs up to 12.5V. It is housed in an 8-pin DFN 3x3 package.

Digital Potentiometers Feature Summary

• Single-channel digital rheostat configuration with 100 kΩ nominal resistance
• I²C serial interface supporting 100 kHz, 400 kHz, and 3.4 MHz speeds
• 7-bit resolution providing 129 distinct resistance steps
• High-voltage tolerant digital inputs capable of withstanding up to 12.5V

Digital Potentiometers Applications

• Variable gain control in analog signal processing circuits
• Adjustable current limiting or biasing in electronic loads
• Programmable attenuation in RF and communication systems
• Calibration and trimming of sensor signal paths

Digital Potentiometers Procurement Notes

Verify the specific suffix 'MF' corresponds to the DFN 3x3 package with exposed thermal pad as documented in the datasheet. Confirm that the application design accounts for the volatile memory nature of the device, requiring wiper state restoration upon power-up if retention is necessary.

Digital Potentiometers Selection Notes

Select this component when a single variable resistor controlled via I²C is required. Ensure the 100 kΩ resistance value aligns with circuit impedance requirements. Note that the 7-bit resolution may be insufficient for applications demanding finer adjustment compared to 8-bit variants like the MCP4552.

Digital Potentiometers Part Context

This part belongs to the MCP45XX family of single-channel digital potentiometers and rheostats. It shares the same core architecture and interface protocols as other members of the series but is specifically configured as a rheostat rather than a potentiometer.

Digital Potentiometers Replacement Considerations

For direct pin-compatible replacements within the same family, consider the MCP4552T-104E/MF, which offers 8-bit resolution (257 steps) while maintaining the same package and interface.