MAX5499ETE+

Overview

The MAX5499ETE+ is a dual, nonvolatile, linear-taper digital potentiometer featuring 10-bit (1024-tap) resolution. It integrates one 3-terminal programmable voltage-divider and one 2-terminal variable resistor with a nominal end-to-end resistance of 50kΩ. The device utilizes an internal EEPROM to store wiper positions for initialization upon power-up. It operates on a single supply from +2.7V to +5.25V or dual supplies of ±2.5V. Communication is handled via a 3-wire SPI-compatible serial interface supporting data rates up to 7MHz. The component is housed in a space-saving 16-pin TQFN package measuring 5mm x 5mm x 0.8mm.

Feature Summary

• Dual configuration: one 3-terminal voltage-divider and one 2-terminal variable resistor
• Nonvolatile memory retains wiper position for 50 years at +85°C
• Low standby current of 1.5µA maximum
• Ratiometric temperature coefficient of 5ppm/°C

Applications

• Gain and offset adjustment in signal conditioning circuits
• LCD contrast bias control
• Low-drift programmable-gain amplifiers
• Pressure sensor signal conditioning

Procurement Notes

Verify the specific suffix 'E' confirms the extended temperature range (-40°C to +85°C). Confirm the '+' suffix indicates compliance with RoHS standards. Ensure the ordering code matches the exact pinout requirements for the mixed voltage-divider and variable-resistor configuration provided by this model number.

Selection Notes

Select the MAX5499ETE+ when a combination of a 50kΩ voltage divider and a 50kΩ variable resistor is required within a single package. Compare against the MAX5495ETE+ if only two voltage dividers are needed, or the MAX5497ETE+ if two variable resistors are sufficient. Verify that the 50kΩ end-to-end resistance aligns with the circuit's impedance matching requirements.

Part Context

This component belongs to the MAX5494–MAX5499 family of 10-bit digital potentiometers manufactured by Analog Devices / Maxim Integrated. The family shares identical electrical characteristics and pinouts but differs in terminal configurations. The MAX5499 specifically combines one voltage-divider channel and one variable-resistor channel, offering flexibility in mixed-signal applications compared to the uniform configurations of other family members.

Replacement Considerations

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