MAX5391LATE+

Overview

The MAX5391LATE+ is a dual 256-tap volatile digital potentiometer in a 16-pin TQFN-EP package with a 10kΩ end-to-end resistance. It operates from a single +1.7V to +5.5V supply and features an SPI-compatible interface. The device includes two independent voltage dividers, each with 256 programmable tap positions. Key electrical characteristics include a maximum wiper resistance of 200Ω, a typical quiescent supply current of 12μA at 1.7V, and a temperature coefficient of 35ppm/°C. The internal charge pump ensures low wiper impedance across the full voltage range.

Feature Summary

• Dual 256-Tap Linear Taper Positions
• Single +1.7V to +5.5V Supply Operation
• Low 12μA Quiescent Supply Current
• SPI-Compatible Interface

Applications

• Low-Voltage Battery Applications
• Portable Electronics
• Mechanical Potentiometer Replacement
• Offset and Gain Control
• Adjustable Voltage References/Linear Regulators

Procurement Notes

Verify the component's lead-free status and RoHS compliance by checking the datasheet revision history and ordering information table. Confirm that the specific suffix 'LATE+' corresponds to the 16-pin TQFN-EP package with 10kΩ resistance as listed in the manufacturer's official documentation.

Selection Notes

Select this part for applications requiring precise digital adjustment of gain or offset in portable devices. Ensure the system voltage falls within the 1.7V to 5.5V range. Consider the 10kΩ resistance value against load requirements, as higher resistances may impact bandwidth and settling time performance.

Part Context

This component belongs to the MAX5391/MAX5393 family of dual digital potentiometers. The MAX5391 variant utilizes a 16-pin TQFN-EP package, while the MAX5393 uses a 14-pin TSSOP. Both families share identical electrical specifications and functionality, differing only in physical footprint and pin count.

Replacement Considerations

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