MAX5483ETE+

Overview

The MAX5483ETE+ is a 10-bit, nonvolatile, linear-taper digital potentiometer configured as a variable resistor. It provides 1024 tap positions with an end-to-end resistance of 10kΩ and a nominal temperature coefficient of 35ppm/°C. The device operates on a single +2.7V to +5.25V supply or ±2.5V dual supplies, consuming 1µA maximum standby current. It features an internal EEPROM for power-on wiper recall and supports a pin-selectable 3-wire SPI-compatible serial interface or up/down digital interface.

Feature Summary

• 10-bit resolution providing 1024 distinct tap positions
• Nonvolatile memory retains wiper position during power loss
• Pin-selectable 3-wire SPI or Up/Down digital interface
• Low standby current of 1µA maximum

Applications

• Mechanical potentiometer replacement
• Low-drift programmable gain amplifiers
• LCD contrast adjustment
• Pressure sensor signal conditioning

Procurement Notes

Verify the package type matches the design requirements, as the MAX5483 is available in both TQFN and TSSOP formats. Confirm that the specific ordering suffix corresponds to the desired packaging configuration before finalizing procurement. Ensure the selected variant aligns with the required board space and thermal management constraints.

Selection Notes

Select the MAX5483ETE+ when a 10kΩ variable resistor configuration is required. This model differs from the MAX5481, which functions as a voltage divider. Verify that the application does not require current flow through the wiper terminal, as this component is designed for high-impedance loads to maintain linearity and prevent nonlinear voltage drops.

Part Context

This component belongs to the MAX5481–MAX5484 family of 10-bit digital potentiometers. While the MAX5481 and MAX5482 are configured as voltage dividers, the MAX5483 and MAX5484 serve as variable resistors. The ETE+ suffix indicates a 16-pin TQFN package with lead-free/RoHS compliance.

Replacement Considerations

Direct functional replacements within the same family include the MAX5484ETE+, which offers a 50kΩ resistance value instead of 10kΩ. Other variants such as the MAX5481EUD+ provide similar functionality but in a different package style (TSSOP) and configuration (voltage divider).

FAQ

What is the difference between the MAX5483 and MAX5481?

The MAX5483 is configured as a 2-terminal variable resistor, whereas the MAX5481 is a 3-terminal programmable voltage divider.

How is the interface mode selected?

The interface mode is selected via the SPI/UD pin. Driving it high enables the 3-wire SPI-compatible interface, while driving it low selects the up/down digital interface.

What is the maximum data rate for the serial interface?

The SPI-compatible serial interface supports data rates up to 7MHz.