MAX5386LATE+T

Overview

The MAX5386LATE+T is a dual, 256-tap, volatile 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 10kΩ and linear taper. The device operates on a single +2.6V to +5.5V supply with a quiescent current of 1µA. It utilizes a 3-wire SPI interface for wiper control and includes power-on reset circuitry that sets the wipers to midscale. The component is specified over an extended temperature range of -40°C to +125°C and is housed in a 16-pin, 3mm x 3mm TQFN package with an exposed pad.

Feature Summary

• Dual 256-tap linear taper digital potentiometers with 10kΩ end-to-end resistance
• SPI-compatible 3-wire serial interface (CS, DIN, SCLK)
• Low supply voltage operation from +2.6V to +5.5V with <1µA standby current
• Power-on reset sets wipers to midscale position
• Extended industrial temperature range: -40°C to +125°C

Applications

• Portable electronics and low-voltage battery applications
• Mechanical potentiometer replacement
• Offset and gain control in amplifier circuits
• Adjustable voltage references and linear regulators

Procurement Notes

Verify the ordering suffix 'ATE' corresponds to the 10kΩ resistance value and 16-TQFN package as listed in the manufacturer's ordering information table. Confirm RoHS compliance status via the '+' designation in the part number. Ensure the specific tape-and-reel packaging matches the '+T' suffix requirement for automated assembly processes.

Selection Notes

Select this component when a dual-channel digital potentiometer with low voltage operation is required. The 10kΩ resistance value suits moderate impedance applications compared to the 50kΩ or 100kΩ variants. The volatile memory requires external non-volatile storage if wiper positions must be retained after power loss. Verify that the system clock frequency does not exceed the maximum SCLK limit of 10MHz.

Part Context

This part 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 MAX5386LATE+T is the 10kΩ version packaged in a 16-pin TQFN format.

Replacement Considerations

Direct pin-compatible replacements within the same family include MAX5386MATE+T (50kΩ) and MAX5386NATE+T (100kΩ). For different configurations, the MAX5388 series offers mixed resistor modes but maintains similar electrical characteristics and interface protocols.