MCP4011T-103E/SN

Overview

The MCP4011T-103E/SN is a volatile, 6-bit digital potentiometer manufactured by Microchip Technology in an 8-pin SOIC package. It provides 64 taps (63 resistors) with resistance options including 10 kΩ. The device features a simple Up/Down serial interface and supports a wide operating voltage range of 1.8V to 5.5V for logic operation, with resistor characteristics specified from 2.7V to 5.5V. Key electrical parameters include a typical wiper resistance of 75 Ω, low temperature coefficients of 50 ppm/°C (absolute) and 10 ppm/°C (ratiometric), and high-voltage tolerant digital inputs up to 12.5V.

Feature Summary

• 6-bit resolution providing 64 discrete tap positions for precise resistance adjustment.
• Simple Up/Down (U/D) serial control interface requiring minimal pin count.
• High-voltage tolerant digital inputs capable of handling signals up to 12.5V.
• Configurable as either a potentiometer or rheostat via terminal connection.

Applications

• Volume control and gain adjustment in audio circuits.
• Programmable biasing for operational amplifiers and sensors.
• Variable reference voltage generation in data acquisition systems.
• Calibration and trimming of analog signal paths.

Procurement Notes

Verify the 'T' suffix indicates tape-and-reel packaging and the 'SN' suffix confirms the 8-pin SOIC (0.150 inch) package. Confirm the '-103' code corresponds to the 10 kΩ resistance value. Ensure the 'E' suffix denotes the extended industrial temperature range (-40°C to +125°C). Check for RoHS compliance status on the specific manufacturing lot.

Selection Notes

Select this component when a volatile memory type is acceptable, as settings are lost upon power loss. Choose the 10 kΩ variant if it matches the target circuit impedance requirements. Verify that the Up/Down interface aligns with the microcontroller's GPIO capabilities rather than SPI or I2C. Consider the 75 Ω typical wiper resistance impact on signal integrity for high-frequency applications.

Part Context

This part belongs to the MCP401x family of low-cost, 64-step digital potentiometers. It shares core specifications with the MCP4012, MCP4013, and MCP4014, differing primarily in internal configuration (potentiometer vs. rheostat) and available packages. The T-103E/SN designation specifically identifies the 10 kΩ version in the SOIC-8 tape-and-reel format.

Replacement Considerations

Direct functional replacements within the same family include MCP4011T-503E/SN (50 kΩ) or MCP4011T-202E/SN (2.1 kΩ) if resistance values differ. Other Microchip digital potentiometers like the MCP41xx series offer non-volatile memory but use different interfaces. Cross-brand equivalents require verification of interface protocol compatibility and voltage tolerances.