MCP4262-104E/UN

Digital Potentiometers Overview

The MCP4262-104E/UN is a dual-channel digital potentiometer IC featuring non-volatile memory and WiperLock™ technology. It provides two independent rheostat configurations with 8-bit resolution, offering 257 discrete taps. The nominal resistance between terminals A and B is 100 kΩ (±20% tolerance). The device operates on a supply voltage ranging from 2.7V to 5.5V for full analog specification, supporting serial interface operation down to 1.8V. It utilizes a standard 4-wire SPI interface capable of speeds up to 10 MHz at VDD ≥ 2.7V. Key electrical parameters include a typical wiper resistance of 75 Ω and a maximum operating temperature of +125°C.

Digital Potentiometers Feature Summary

• Dual Resistor Network: Contains two independent 8-bit digital potentiometers configured as rheostats with 257 steps.
• Non-Volatile Memory: Features Data EEPROM for saving wiper settings and WiperLock™ technology to secure calibration data against tampering.
• High Voltage Tolerance: Digital input pins (CS, SCK, SDI, WP, SHDN) tolerate voltages up to 12.5V, allowing compatibility with higher voltage logic levels.
• SPI Interface: Supports high-speed read/write operations via a 4-wire serial interface with modes 0,0 and 1,1.

Digital Potentiometers Applications

• Industrial process control systems requiring adjustable gain or reference voltages.
• Audio equipment for electronic volume control and tone adjustment.
• Test and measurement instruments needing programmable attenuation or impedance matching.
• Power supply circuits for remote regulation and feedback loop tuning.

Digital Potentiometers Procurement Notes

Verify the specific suffix 'UN' corresponds to the MSOP-10 package when sourcing components. Confirm that the application environment remains within the specified -40°C to +125°C temperature range to ensure parameter validity. Ensure the SPI clock frequency does not exceed 10 MHz if the supply voltage is below 2.7V, as performance specifications are guaranteed only above this threshold.

Digital Potentiometers Selection Notes

Select the MCP4262-104E/UN when a dual-channel rheostat configuration is required rather than a potentiometer setup. The '104' designation indicates a 100 kΩ resistance value; choose alternative suffixes such as '103' for 10 kΩ or '503' for 50 kΩ if different resistance values are needed. This model is suitable for applications demanding non-volatile storage of calibration settings without external memory components.

Digital Potentiometers Part Context

This component belongs to the MCP414X/416X/424X/426X family of digital potentiometers manufactured by Microchip Technology. The 'MCP4262' identifier specifies a dual-rheostat device with 8-bit resolution and non-volatile memory. It shares the same pinout and command set as other members in the series, differing primarily in channel count, resolution, and memory type.

Digital Potentiometers Replacement Considerations

Direct functional substitutes within the same family include the MCP4242 (7-bit resolution) or MCP4252 (volatile memory). For single-channel applications, the MCP4162 may be used if one channel is unused. Verify package compatibility (MSOP-10) and ensure the replacement supports the required 100 kΩ resistance value.