MAX5424ETA

Overview

The MAX5424ETA+ is a single-channel, nonvolatile digital potentiometer featuring a 200 kΩ total resistance and 256 discrete taps. It operates within a supply voltage range of 2.7 V to 5.25 V with a typical operating current of 1 µA. The device utilizes a 3-wire SPI serial interface for control and data transfer. Key electrical specifications include a temperature coefficient of 35 ppm/°C and a resistance tolerance of ±25%. Contact resistance is typically 325 Ω. The component supports linear taper characteristics and functions across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Nonvolatile memory retains wiper position upon power loss
• 256-tap resolution with 200 kΩ nominal resistance
• Low power consumption with 1 µA typical operating current
• SPI-compatible 3-wire serial interface

Applications

• Programmable gain amplifiers
• Voltage reference adjustment
• Sensor biasing networks

Procurement Notes

Verify the specific suffix (e.g., ETA+) against the manufacturer's datasheet to confirm package type and tape/reel options. Confirm RoHS compliance status and moisture sensitivity level (MSL) requirements prior to integration into the assembly process.

Selection Notes

Select this component when nonvolatile storage of the resistance setting is required without external battery backup. Ensure the 200 kΩ resistance value aligns with the target circuit impedance. Verify that the system voltage falls within the 2.7 V to 5.25 V operational window.

Part Context

This part belongs to the MAX542x family of single-channel digital potentiometers. It shares architectural similarities with the MAX5422 and MAX5423 but differs in resistance values and tap counts. The 'T' suffix indicates tape-and-reel packaging, while '+' denotes lead-free/RoHS-compliant construction.

Replacement Considerations

Cross-reference with MAX5422 or MAX5423 variants if different resistance values are acceptable. Verify pinout compatibility before substituting other digital potentiometer ICs.