MAX5128ELA+T

Overview

The MAX5128ELA+T is a nonvolatile, single-channel digital potentiometer featuring 128 tap positions and a 22kΩ end-to-end resistance. It operates on a +2.7V to +5.25V supply with a typical standby current of 0.5µA. The device utilizes a 2-wire UP/DN interface for wiper control and includes integrated EEPROM that retains the programmed position after power loss. Key electrical parameters include a ±1.0 LSB INL in voltage-divider mode, a 5ppm/°C ratiometric temperature coefficient, and a 400kHz wiper bandwidth.

Feature Summary

• Nonvolatile memory recalls wiper position at power-on
• Ultra-small 2mm x 2mm µDFN package
• Low 0.5µA (typ) standby supply current
• 50-year data retention and 80,000 write cycles

Applications

• VCOM adjustment for LCD panels
• Backlight and LED bias adjustment
• Power-supply module output setting
• Fiber-module bias setting
• DC-DC converter feedback network adjustment

Procurement Notes

Verify the component matches the specific 'E' industrial temperature grade (-40°C to +85°C) and '+ lead-free' designation. Confirm the suffix 'T' indicates tape-and-reel packaging. Ensure the source provides valid manufacturer traceability documentation for this Analog Devices part number.

Selection Notes

Select this component when a compact form factor is required alongside nonvolatile storage capabilities. The 22kΩ resistance value suits moderate impedance applications. Verify that the 2-wire logic interface aligns with the system's control lines and that the 2.7V minimum supply voltage meets the application requirements.

Part Context

This part belongs to the MAX5128 family of linear-taper digital potentiometers. The 'ELA+' designation specifies the 8-pin µDFN package, industrial temperature range, and lead-free construction. It serves as a mechanical potentiometer replacement in space-constrained portable electronics.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.