MCP4262T-502E/UN

Digital Potentiometers Overview

The MCP4262T-502E/UN is a dual-channel digital potentiometer featuring non-volatile memory and an SPI serial interface. It provides two independent rheostat networks with 8-bit resolution, offering 257 discrete resistance steps. The nominal end-to-end resistance (R_AB) is 5 kΩ, with a typical wiper resistance of 75 Ω. Operating from a supply voltage range of 2.7V to 5.5V, the device supports high-voltage tolerant digital inputs up to 12.5V. It includes WiperLock™ technology for secure calibration storage and operates within an extended temperature range of -40°C to +125°C.

Digital Potentiometers Feature Summary

• Dual resistor network with 8-bit resolution (257 taps) and non-volatile EEPROM memory
• SPI serial interface supporting modes 0,0 and 1,1 at frequencies up to 10 MHz
• High-voltage tolerant digital inputs capable of withstanding up to 12.5V
• WiperLock™ technology enables automatic recall and protection of saved wiper settings

Digital Potentiometers Applications

• Industrial process control systems requiring precise analog signal adjustment
• Audio equipment for gain control and volume level management
• Instrumentation circuits utilizing split-rail power configurations
• Embedded systems needing hardware-level calibration retention

Digital Potentiometers Procurement Notes

Verify the specific suffix 'UN' corresponds to the MSOP-10 package when sourcing components. Confirm that the 'T' designation indicates tape-and-reel packaging suitable for automated assembly processes. Ensure compatibility with standard SPI logic levels if interfacing with microcontrollers operating below 2.7V.

Digital Potentiometers Selection Notes

Select this model for applications requiring dual independent channels with persistent state retention after power loss. The 5 kΩ resistance value is suitable for moderate current loads. Consider the 75 Ω typical wiper resistance when designing low-impedance signal paths. Verify that the system clock frequency does not exceed 10 MHz for reliable data transfer.

Digital Potentiometers Part Context

This component belongs to the MCP41XX/42XX family of single and dual digital potentiometers manufactured by Microchip Technology. It shares architectural similarities with volatile memory variants like the MCP4232 but distinguishes itself through integrated non-volatile storage. The device complements other precision analog control ICs in mixed-signal embedded environments.

Digital Potentiometers Replacement Considerations

Direct functional substitutes include other MCP426X series devices with different resistance values or packages. Cross-model replacements such as the MCP4242 offer similar features but with 7-bit resolution. Verify pinout compatibility and software register mapping before substituting with related part numbers.