MCP4552T-104E/MF

Digital Potentiometers Overview

The MCP4552T-104E/MF is a single-channel digital rheostat from Microchip Technology, featuring 8-bit resolution with 257 discrete taps. It utilizes an I2C serial interface for high-speed read/write operations and wiper increment/decrement commands. The device operates within a supply voltage range of 1.8V to 5.5V and supports bus speeds up to 3.4 MHz. Key electrical characteristics include a typical wiper resistance of 75Ω and a maximum terminal current of 2.5 mA. It incorporates Brown-Out Reset protection and high-voltage tolerant inputs up to 12.5V.

Digital Potentiometers Feature Summary

• Single Rheostat Configuration: 8-bit (257 steps) resolution with volatile memory.
• I2C Interface: Supports Standard (100 kHz), Fast (400 kHz), and High-Speed (up to 3.4 MHz) modes.
• High-Voltage Tolerance: Digital inputs tolerate voltages up to 12.5V regardless of VDD level.
• Low Power Consumption: Typical inactive current of 2.5 µA at 5.5V.

Digital Potentiometers Applications

• Programmable gain amplifiers
• Voltage reference trimming
• Audio volume control circuits
• Sensor bias adjustment

Digital Potentiometers Procurement Notes

Verify the specific suffix 'MF' corresponds to the DFN 3x3 package with exposed thermal pad as defined in the datasheet. Confirm that the 'T' indicates tape and reel packaging. Ensure the '104' code matches the required 100 kΩ resistance value for the application circuit design.

Digital Potentiometers Selection Notes

Select this component when a single variable resistor controlled via I2C is required. The 100 kΩ nominal resistance suits moderate impedance applications. Consider the 75 Ω typical wiper resistance for signal path loss calculations. Verify that the system voltage falls within the 1.8V to 5.5V operating range.

Digital Potentiometers Part Context

This part belongs to the MCP45XX family of digital potentiometers. Unlike the MCP4562 which features non-volatile memory, the MCP4552 uses volatile RAM, requiring the wiper setting to be reloaded after power cycles. The 'MF' suffix denotes the DFN-8 package, distinct from MSOP or TSSOP options available in the same series.

Digital Potentiometers Replacement Considerations

Direct pin-compatible replacements within the same package include other MCP4552 variants with different resistance values (e.g., MCP4552T-503E/MF for 50 kΩ). Cross-family replacement with MCP4562 requires accounting for non-volatile memory differences.