MCP4011T-202E/MS

Overview

The MCP4011T-202E/MS is a volatile, 6-bit digital potentiometer manufactured by Microchip Technology. It features a nominal resistance of 2.1 kΩ with 63 resistors and 64 taps. The device utilizes a simple Up/Down (U/D) serial interface for wiper control. Operating voltage ranges from 1.8V to 5.5V, with analog characteristics specified from 2.7V to 5.5V. Key electrical parameters include a typical wiper resistance of 75 Ω, supply current of 45 µA at 5.5V, and high-voltage tolerant inputs up to 12.5V. It operates within an extended temperature range of –40°C to +125°C.

Feature Summary

• 6-bit resolution providing 64 discrete tap positions
• Up/Down (U/D) serial control interface
• High-voltage tolerant digital inputs (up to 12.5V)
• Low power consumption with 1 µA max static current

Applications

• Volume control in audio circuits
• Gain adjustment in instrumentation amplifiers
• Voltage reference trimming
• Programmable biasing networks

Procurement Notes

Verify the package marking and date code against the manufacturer's latest documentation. Confirm that the 'E' suffix indicates the extended temperature grade (-40°C to +125°C). Ensure the 'MS' suffix corresponds to the 8-lead MSOP package. Check for moisture sensitivity level requirements during storage and handling.

Selection Notes

Select this component when a single-channel digital potentiometer with low resistance (2.1 kΩ) is required. The U/D interface simplifies control logic compared to SPI or I2C alternatives. Consider the volatile memory nature; the device resets to mid-scale upon power-up unless custom settings are programmed immediately after initialization.

Part Context

This part belongs to the MCP4011/2/3/4 family of low-cost digital potentiometers. The MCP4011 variant is specifically configured as a potentiometer, whereas other family members may be rheostats. The T suffix indicates tape and reel packaging, while MS denotes the MSOP package style.

Replacement Considerations

Direct pin-compatible replacements within the same family include MCP4011T-502E/MS (5 kΩ), MCP4011T-103E/MS (10 kΩ), and MCP4011T-503E/MS (50 kΩ). Other packages such as SOIC or DFN are available with different suffixes but require schematic review.