MCP4024T-502E/OT

Overview

The MCP4024T-502E/OT is a nonvolatile, single-channel digital potentiometer with a nominal resistance of 5 kΩ and 6-bit resolution (64 taps). It operates within a supply voltage range of 2.7 V to 5.5 V and features a simple Up/Down serial interface for wiper control. The device incorporates WiperLock technology to store the wiper setting in EEPROM, ensuring power-on recall. It supports rheostat configuration with high-voltage tolerant inputs up to 12.5 V and functions across an extended temperature range from -40°C to +125°C.

Feature Summary

• Nonvolatile memory with WiperLock technology for automatic power-on recall of wiper settings
• Simple Up/Down (U/D) serial interface with high-voltage tolerant inputs (up to 12.5 V)
• Low static current consumption (1 µA max) and wide operating voltage range (2.7 V to 5.5 V)
• Extended temperature operation (-40°C to +125°C) with low temperature coefficient

Applications

• Audio volume control and tone adjustment circuits
• Programmable gain amplifiers and sensor signal conditioning
• Voltage reference trimming and calibration systems
• Industrial process control and instrumentation

Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature grade (-40°C to +125°C) and 'OT' denotes the SOT-23-5 surface-mount package. Confirm that the '502' code corresponds to the 5 kΩ resistance value. Ensure the application design accounts for the nonvolatile nature of the device, which requires EEPROM write cycles during initialization or manual save operations.

Selection Notes

Select this component when a compact, nonvolatile digital potentiometer is required for rheostat applications. The 5 kΩ resistance value suits moderate impedance circuits. The U/D interface simplifies control logic compared to SPI or I2C alternatives. Consider the 75 Ω typical wiper resistance and bandwidth limitations when designing for high-frequency signals.

Part Context

This part belongs to the MCP402x family of low-cost nonvolatile digital potentiometers. The MCP4024 variant specifically offers a 5-pin SOT-23 package optimized for space-constrained designs. Unlike volatile counterparts, it retains settings without external backup, making it suitable for cost-sensitive consumer and industrial electronics where power loss does not require recalibration.

Replacement Considerations

Direct replacements include other MCP4024 variants with different resistance values (e.g., MCP4024T-202E/OT for 2.1 kΩ) or package options if pin compatibility allows. Cross-family substitution with MCP4014 series is possible but requires verifying volatile vs. nonvolatile memory requirements and interface compatibility.