MCP4262T-104E/MF

Digital Potentiometers Overview

The MCP4262T-104E/MF is a dual-channel digital potentiometer IC manufactured by Microchip Technology. It features two independent rheostat configurations with an end-to-end resistance (R_AB) of 100 kΩ and ±20% tolerance. The device provides 8-bit resolution, offering 257 discrete wiper positions for precise control. It utilizes a non-volatile memory architecture to retain settings without power. Communication is handled via a high-speed SPI serial interface operating up to 10 MHz. The component supports a supply voltage range of 2.7V to 5.5V and operates within an extended temperature range of -40°C to +125°C.

Digital Potentiometers Feature Summary

• Dual 100 kΩ Rheostat Configuration: Two independent resistor networks with 100 kΩ nominal resistance and ±20% tolerance.
• Non-Volatile Memory with WiperLock™: Retains wiper settings in Data EEPROM upon power loss; includes hardware/software write protect.
• High-Speed SPI Interface: Supports 10 MHz clock speeds in modes 0,0 and 1,1 with high-voltage tolerant inputs up to 12.5V.
• Extended Operating Range: Functions from 2.7V to 5.5V VDD and operates across -40°C to +125°C ambient temperatures.

Digital Potentiometers Applications

• Precision gain adjustment in audio processing circuits
• Calibration of sensor signal conditioning paths
• Variable bias current generation in analog front-ends
• Programmable attenuation in RF signal chains

Digital Potentiometers Procurement Notes

Verify the specific suffix 'MF' corresponds to the DFN-10 package with exposed thermal pad as documented in the datasheet. Confirm that the 'T' designation indicates tape-and-reel packaging if reel quantity is required. Ensure the 'E' suffix aligns with the industrial temperature grade (-40°C to +125°C). Cross-reference the full part number against official Microchip documentation to confirm pinout compatibility with the target PCB footprint.

Digital Potentiometers Selection Notes

Select this model when a dual-rheostat configuration with high resistance (100 kΩ) is required. The 8-bit resolution provides 256 steps, suitable for applications needing moderate precision. Verify that the system requires non-volatile storage to maintain calibration settings after power cycles. Ensure the host microcontroller supports SPI mode 0,0 or 1,1 at frequencies up to 10 MHz. Check that the application voltage does not exceed the 12.5V high-voltage tolerance on digital inputs.

Digital Potentiometers Part Context

This component belongs to the MCP426X family of dual digital potentiometers. It shares architectural similarities with single-channel variants like the MCP4162 and volatile-memory counterparts such as the MCP4252. The primary distinction lies in its dual-rheostat topology and non-volatile EEPROM storage, differentiating it from the MCP4232 (volatile, 7-bit) and MCP4242 (non-volatile, 7-bit).

Digital Potentiometers Replacement Considerations

Direct substitutes include other MCP426X variants with matching resistance values (e.g., MCP4262-103E/MF for 10 kΩ). For single-channel needs, the MCP4162 offers identical electrical characteristics but with only one potentiometer. Volatile alternatives like the MCP4252 provide similar performance without EEPROM retention.