MCP4552T-103E/MS

Digital Potentiometers Overview

The MCP4552T-103E/MS is a single-channel digital rheostat IC from Microchip Technology, featuring an I²C serial interface. It provides 8-bit resolution with 256 tap positions and a nominal resistance (RAB) of 10 kΩ. The device operates on a supply voltage ranging from 1.8V to 5.5V, with full analog specifications guaranteed between 2.7V and 5.5V. It utilizes volatile memory for wiper settings and supports standard, fast, and high-speed I²C modes up to 3.4 MHz.

Digital Potentiometers Feature Summary

• Single Rheostat Configuration: 8-bit resolution with 256 taps and 10 kΩ nominal resistance.
• I²C Serial Interface: Supports 100 kHz, 400 kHz, and 3.4 MHz clock frequencies.
• High-Voltage Tolerant Inputs: Digital inputs tolerate voltages up to 12.5V.
• Low Power Consumption: Typical inactive current of 2.5 µA at VDD = 5.5V.

Digital Potentiometers Applications

• Variable gain control in audio signal processing circuits
• Programmable biasing networks for operational amplifiers
• Adjustable reference voltage generation
• Digital potentiometer replacement in space-constrained PCB designs

Digital Potentiometers Procurement Notes

Verify the specific suffix 'E/MS' corresponds to the MSOP-8 package and RoHS compliance status. Confirm that the 'T' designation indicates tape-and-reel packaging if reel quantity is required. Ensure the system design accounts for volatile memory behavior upon power loss, as wiper settings are not retained without external non-volatile storage.

Digital Potentiometers Selection Notes

Select this component when a single-channel variable resistor is needed with I²C control. The 10 kΩ value suits moderate impedance applications. For higher resolution or dual-channel requirements, consider the MCP4652 series. Verify that the host microcontroller supports the desired I²C speed, noting that 3.4 MHz operation requires specific voltage levels and low bus capacitance.

Digital Potentiometers Part Context

This part belongs to the MCP45XX family of single-channel digital potentiometers. The '5' in the model number denotes 8-bit resolution (256 steps), while '2' indicates a rheostat configuration. The '103' suffix specifies the 10 kΩ resistance value. It shares the same pinout and interface as the MCP4551 (potentiometer) but differs in terminal connectivity.

Digital Potentiometers Replacement Considerations

MCP4552T-104E/MS offers the same functionality with 100 kΩ resistance. MCP4552T-503E/MS provides 50 kΩ resistance. Direct pin-compatible substitutes within the same family include MCP4551 variants for potentiometer configurations.