MAX5488ETE#TG16

Overview

The MAX5488ETE#TG16 is a dual, linear-taper digital potentiometer featuring a 3-wire SPI-compatible interface and nonvolatile memory. It provides 256 tap positions with an end-to-end resistance of 50kΩ and a temperature coefficient of 35ppm/°C. Operating on a single +2.7V to +5.25V supply, it includes EEPROM storage for wiper recall upon power-up. The device is housed in a 16-pin TQFN package (3mm x 3mm) and operates within the -40°C to +85°C temperature range.

Feature Summary

• Dual-channel architecture with 256 programmable tap positions
• Nonvolatile EEPROM retains wiper settings across power cycles
• SPI-compatible serial interface for digital control
• Low 35ppm/°C end-to-end resistance temperature coefficient

Applications

• LCD screen adjustment and bias control
• Audio volume control circuits
• Mechanical potentiometer replacement
• Low-drift programmable filters
• Programmable-gain amplifiers

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific automotive qualification suffixes if required by the application environment. Ensure proper handling procedures are followed due to the surface-mount TQFN packaging.

Selection Notes

Select this model when a 50kΩ resistance value is required; the MAX5487 offers 10kΩ and the MAX5489 offers 100kΩ. Verify that the system voltage falls within the 2.7V to 5.25V operating range. Consider the 16-pin TQFN footprint constraints during PCB layout design.

Part Context

This component belongs to the MAX5487/MAX5488/MAX5489 family of dual digital potentiometers. The 'E' indicates the extended temperature range (-40°C to +85°C), 'T' denotes the TQFN package type, and '#TG16' specifies the tape-and-reel packaging configuration.

Replacement Considerations

Direct functional substitutes include the MAX5487ETE+ (10kΩ) and MAX5489ETE+ (100kΩ). Other compatible devices from the same series may be used if the resistance value matches the circuit requirements.

FAQ

How does the device handle wiper position data after power loss?

The internal EEPROM stores the wiper position prior to power-down. Upon power-up, the device automatically recalls and restores the wipers to their previously stored positions.

What is the maximum number of write cycles supported by the nonvolatile memory?

The nonvolatile memory is guaranteed for 200,000 wiper store cycles at +25°C and 50,000 cycles at +85°C.

What is the typical standby current consumption?

In standby mode, with digital inputs at VDD or GND, the supply current drops to a typical value of 0.5µA.