MAX5386MATE+

Overview

The MAX5386MATE+ is a dual, 256-tap, volatile, low-voltage linear taper digital potentiometer manufactured by Analog Devices Inc./Maxim Integrated. It features two independent potentiometers in a voltage-divider configuration with an end-to-end resistance of 50kΩ and a tolerance of ±25%. Operating from a single +2.6V to +5.5V supply, it draws a quiescent current of 1µA. The device utilizes a 3-wire SPI interface for wiper control and operates within an extended temperature range of -40°C to +125°C. It is housed in a 16-pin, 3mm x 3mm TQFN package with an exposed pad.

Feature Summary

• Dual 256-Tap Linear Taper: Contains two independent potentiometers with 256 programmable tap positions each.
• Low Voltage Operation: Functions on a single +2.6V to +5.5V power supply with <1µA standby current.
• SPI Interface: Controlled via a standard 3-wire serial interface (CS, DIN, SCLK) with a maximum clock frequency of 10MHz.
• Automotive Temperature Range: Specified for operation from -40°C to +125°C.

Applications

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

Procurement Notes

Verify the specific ordering suffix 'ATE+' to confirm the 50kΩ resistance value and 16-pin TQFN package. Confirm RoHS compliance status as indicated by the '+' suffix. Check availability through authorized distributors, as supply levels may vary.

Selection Notes

Select the MAX5386MATE+ when a dual-channel digital potentiometer with 50kΩ end-to-end resistance is required. Ensure the application supports volatile memory behavior, as wiper positions reset to midscale upon power-up. Verify that the system voltage falls within the 2.6V to 5.5V range and that SPI timing constraints are met.

Part Context

This component belongs to the MAX5386/MAX5388 family of dual, 256-tap digital potentiometers. The MAX5386 variant specifically provides two voltage-divider configured potentiometers, whereas the MAX5388 offers one voltage-divider and one variable-resistor configuration. The 'M' suffix denotes the 50kΩ resistance option.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consider checking for other members of the MAX5386 family (e.g., MAX5386LATE+ for 10kΩ or MAX5386NATE+ for 100kΩ) if resistance values differ from requirements.