MCP4262-502E/UN

Digital Potentiometers Overview

The MCP4262-502E/UN is a dual-channel digital potentiometer IC featuring non-volatile memory and an SPI serial interface. It provides two independent rheostat networks with 8-bit resolution, offering 256 adjustable taps per channel. The nominal resistance between terminals A and B is 5 kΩ with a ±20% tolerance. The device operates within a supply voltage range of 2.7V to 5.5V for specified characteristics, supporting operation down to 1.8V for the serial interface only. Key features include WiperLock™ technology for secure calibration storage, high-voltage tolerant digital inputs up to 12.5V, and a typical wiper resistance of 75 Ω.

Digital Potentiometers Feature Summary

• Dual resistor network configuration with 8-bit (256 tap) resolution
• Non-volatile EEPROM memory with WiperLock™ technology for automatic recall of wiper settings
• SPI serial interface operating at frequencies up to 10 MHz in modes 0,0 and 1,1
• High-voltage tolerant digital inputs capable of withstanding up to 12.5V

Digital Potentiometers Applications

• Gain control in audio and instrumentation circuits
• Programmable voltage references and biasing networks
• Calibration of sensor signals and measurement systems
• Adjustable gain stages in data acquisition systems

Digital Potentiometers Procurement Notes

Verify the specific package marking and date code against the manufacturer's latest documentation to ensure authenticity. Confirm that the ordering suffix matches the required tape and reel or tube packaging format for your assembly process. Check for any recent updates to the datasheet regarding electrical characteristics or recommended operating conditions.

Digital Potentiometers Selection Notes

Select this component when a dual-channel digital rheostat with persistent memory is required. Ensure the system voltage falls within the 2.7V to 5.5V range for full analog specification compliance. Verify that the SPI bus speed does not exceed 10 MHz and that the host controller supports the necessary mode bits. Consider the thermal resistance of the MSOP-10 package if high power dissipation is expected.

Digital Potentiometers Part Context

This part belongs to the MCP414X/416X/424X/426X family of single and dual SPI digital potentiometers. The 'MCP42' prefix indicates a dual resistor network, while the '6' signifies 8-bit resolution with non-volatile memory. The '-502' suffix denotes a 5 kΩ nominal resistance value, and '/UN' specifies the MSOP-10 surface-mount package.

Digital Potentiometers Replacement Considerations

Direct replacements within the same family include other MCP426X variants with different resistance values or packages. For single-channel applications, the MCP4162 may be suitable. Cross-family replacement requires verifying pin compatibility and ensuring the substitute supports the required SPI protocol and non-volatile memory functions.