MCP4011-202E/SN

Overview

The MCP4011-202E/SN is a volatile, 6-bit digital potentiometer manufactured by Microchip Technology in an 8-pin SOIC package. It provides 64 taps with a nominal resistance of 2.1 kΩ and ±20% tolerance. The device operates on a supply voltage range of 1.8V to 5.5V for logic functions, while resistor characteristics are specified from 2.7V to 5.5V. Control is managed via a simple Up/Down (U/D) serial interface. Key electrical parameters include a typical wiper resistance of 75Ω, a maximum static current of 1µA, and high-voltage tolerant inputs up to 12.5V.

Feature Summary

• 64-tap resolution controlled by a simple Up/Down (U/D) serial protocol
• High-voltage tolerant digital inputs capable of handling up to 12.5V
• Low-power operation with a maximum static current of 1µA
• Extended temperature range spanning -40°C to +125°C

Applications

• Variable gain control in audio signal processing circuits
• Programmable biasing for operational amplifiers
• Adjustable reference voltage generation
• Digital trimming of analog sensor signals

Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature grade (-40°C to +125°C) and 'SN' denotes the SOIC-8 package. Confirm that the '202' code corresponds to the 2.1 kΩ resistance value. Ensure the design accounts for the volatile memory nature, as settings are lost upon power loss.

Selection Notes

Select this component when a low-cost, single-channel digital potentiometer with high-voltage input tolerance is required. The U/D interface simplifies control compared to SPI or I2C alternatives. Consider the 2.1 kΩ resistance value against load requirements, as lower resistance values offer higher bandwidth but draw more current.

Part Context

This part belongs to the MCP401x family of volatile digital potentiometers. The MCP4011 variant is specifically configured as a potentiometer, whereas the MCP4012 is a rheostat. Other family members include the MCP4013 and MCP4014. All share similar electrical characteristics but differ in terminal configuration.

Replacement Considerations

Direct replacements within the same family include the MCP4012-202E/SN (rheostat version). For different resistance values, consider the MCP4011-502E/SN (5 kΩ), MCP4011-103E/SN (10 kΩ), or MCP4011-503E/SN (50 kΩ). Non-volatile alternatives like the MCP4021 series require interface changes.