MCP4014T-202E/OT

Overview

The MCP4014T-202E/OT is a volatile, 6-bit digital potentiometer manufactured by Microchip Technology. It features a 2.1 kΩ resistance value with 63 resistors and 64 taps, configured as a rheostat in a SOT-23-5 package. The device utilizes a simple Up/Down (U/D) serial interface for wiper control. Electrical specifications include an operating voltage range of 1.8V to 5.5V, a typical wiper resistance of 75 Ω, and a bandwidth of 4 MHz at -3 dB. It supports high-voltage tolerant inputs up to 12.5V and operates within an extended temperature range of –40°C to +125°C.

Feature Summary

• 6-bit resolution providing 64 taps with 2.1 kΩ nominal resistance
• Up/Down (U/D) serial control interface with high-voltage tolerant inputs (up to 12.5V)
• Low power consumption with 1 µA maximum static current
• Wide operating voltage range from 1.8V to 5.5V

Applications

• Variable gain amplifiers
• Voltage reference adjustment
• Programmable filters

Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature range (-40°C to +125°C) and 'OT' denotes the SOT-23-5 tape and reel packaging. Confirm that the '202' code corresponds to the 2.1 kΩ resistance value. Ensure the application design accounts for the volatile memory nature, where wiper settings are lost upon power loss unless a default Power-On Recall setting is utilized.

Selection Notes

Select this component when a rheostat configuration with a 2.1 kΩ range is required. The U/D interface simplifies control logic compared to I2C or SPI devices. Consider the 75 Ω typical wiper resistance and 4 MHz bandwidth for signal integrity. Verify that the single-channel architecture meets system requirements, as other variants in the family may offer different pin counts or configurations.

Part Context

This part belongs to the MCP4011/2/3/4 family of low-cost, 64-step volatile digital potentiometers. The MCP4014 variant is specifically designed for rheostat applications using a compact SOT-23-5 package. It shares core electrical characteristics with the MCP4011, MCP4012, and MCP4013, differing primarily in package type and internal terminal connections.

Replacement Considerations

Direct functional replacements within the same family include MCP4012T-202E/OT, which offers identical electrical performance but utilizes a 6-pin SOT-23 package instead of the 5-pin version. Ensure pin compatibility is verified if substituting packages.

FAQ

What is the default wiper setting upon power-up?

The default Power-On Recall (POR) setting is Mid-Scale (Code 1Fh).

How does the device handle high-voltage inputs?

The CS and U/D inputs are high-voltage tolerant, supporting levels up to 12.5V even when VDD is lower.

Is the memory non-volatile?

No, the MCP4014 uses volatile RAM for wiper storage; settings are lost when power is removed.