MCP4262T-103E/MF

Digital Potentiometers Overview

The MCP4262T-103E/MF is a dual-channel digital potentiometer IC from Microchip Technology, featuring non-volatile memory and an SPI serial interface. It provides two independent rheostat networks with 8-bit resolution (257 taps) and a nominal resistance of 10 kΩ. The device operates within a supply voltage range of 2.7V to 5.5V for specified characteristics, extending down to 1.8V for serial interface operation only. Key features include WiperLock™ technology for secure calibration settings, high-voltage tolerant digital inputs up to 12.5V, and a typical standby current of 2.5 µA.

Digital Potentiometers Feature Summary

• Dual resistor network with 8-bit resolution (257 steps) and 10 kΩ nominal resistance
• Non-volatile EEPROM memory with WiperLock™ technology for data retention
• SPI serial interface supporting 10 MHz clock speeds at VDD ≥ 2.7V
• High-voltage tolerant digital inputs (up to 12.5V) and wide operating temperature range (-40°C to +125°C)

Digital Potentiometers Applications

• Programmable gain amplifiers and variable attenuators
• Digital control of analog signal paths in industrial systems
• Calibration and trimming of sensor circuits
• Audio volume control and equalization adjustments

Digital Potentiometers Procurement Notes

Verify the specific suffix 'MF' corresponds to the DFN-8 EP package when sourcing, as package options vary across the MCP426X family. Confirm that the 'T' designation indicates reel packaging if bulk quantities are required. Ensure the E version meets environmental compliance standards for the target application region.

Digital Potentiometers Selection Notes

Select this component when dual independent channels are required with non-volatile storage. The 10 kΩ value suits moderate impedance applications; lower values like 5 kΩ offer higher bandwidth. Ensure the system SPI clock does not exceed 10 MHz for VDD between 2.7V and 5.5V. Verify that the 12.5V input tolerance on control pins aligns with the host microcontroller's logic levels or requires level shifting if voltages differ significantly.

Digital Potentiometers Part Context

This part belongs to the MCP414X/416X/424X/426X family of SPI digital potentiometers. Unlike volatile counterparts (MCP423X), it retains wiper settings after power loss. The '6' in the model number denotes 8-bit resolution, while '2' indicates dual channels. It differs from the MCP4262T-103I/MS primarily by package type (DFN vs MSOP) and temperature grade (E for extended).

Digital Potentiometers Replacement Considerations

Direct pin-compatible replacements within the same family include other MCP426X variants with different resistance values or packages. For single-channel needs, the MCP4162 series may be considered if one channel is unused. Ensure any substitute maintains the 8-bit resolution and non-volatile memory requirement.