MAX5477ETE#G16

Overview

The MAX5477ETE+ is a dual, nonvolatile, linear-taper digital potentiometer featuring an I2C-compatible serial interface. It provides 256 tap positions per potentiometer with a nominal end-to-end resistance of 10kΩ. The device operates on a single supply voltage ranging from +2.7V to +5.25V and draws a maximum static supply current of 1µA. It includes internal nonvolatile EEPROM for wiper position recall upon power-up and supports data rates up to 400kbps. The component is housed in a 16-pin TQFN package and functions over an extended temperature range of -40°C to +85°C.

Feature Summary

• Dual 256-tap nonvolatile digital potentiometers with 10kΩ nominal resistance
• Fast-mode I2C-compatible serial interface supporting up to 400kbps
• Internal EEPROM stores wiper position for power-on recall
• EEPROM write protection via dedicated WP pin

Applications

• Mechanical potentiometer replacement
• Low-drift programmable-gain amplifier circuits
• Volume control systems
• Liquid-crystal display (LCD) contrast control

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and tape/reel configuration. Ensure compatibility with the required I2C bus addressing scheme by checking the A0-A2 pin connections. Confirm that the 10kΩ resistance value aligns with circuit design requirements before procurement.

Selection Notes

Select this model for applications requiring precise, nonvolatile resistance adjustment without mechanical components. The 10kΩ variant is suitable for low-current signal paths. Consider the ±1 LSB INL and ±0.5 LSB DNL specifications for voltage-divider mode accuracy. Ensure the operating voltage remains within the 2.7V to 5.25V range for optimal performance.

Part Context

This component belongs to the MAX5477/MAX5478/MAX5479 family of dual digital potentiometers. The MAX5477 specifically denotes the 10kΩ end-to-end resistance variant, while other family members offer 50kΩ or 100kΩ options. All variants share identical pinouts, interfaces, and nonvolatile memory features.

Replacement Considerations

Direct functional substitutes within the same family include the MAX5478ETE+ (50kΩ) and MAX5479ETE+ (100kΩ), provided the resistance value difference is acceptable for the application.