MAX5438EUB+T

$10.07

Description：IC DGT POT 100KOHM 128TAP 10UMAX
Series：-

SKU:b21b2abe8cc5 Category: Digital Potentiometers Brand: Analog Devices Inc./Maxim Integrated

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Product introduction

Product Detailed Parameters

Description：IC DGT POT 100KOHM 128TAP 10UMAX
Series：-
Mfr：Analog Devices Inc./Maxim Integrated
Package：Tape & Reel (TR),Cut Tape (CT)
Taper：Linear
Configuration：Potentiometer
Number of Circuits：1
Number of Taps：128
Resistance (Ohms)：100k
Interface：SPI
Memory Type：Volatile
Voltage - Supply：10V ~ 30V, ±5V ~ 15V
Features：-
Tolerance：±25%
Temperature Coefficient (Typ)：35ppm/°C
Mounting Type：Surface Mount
Supplier Device Package：10-uMAX/uSOP
Package / Case：10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Operating Temperature：-40°C ~ 85°C
Resistance - Wiper (Ohms) (Typ)：900
Grade：-
Qualification：-

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MAX5438EUB+T

Overview

The MAX5438EUB+T is a single-channel, high-voltage digital potentiometer featuring 128 tap positions and a 100kΩ end-to-end resistance. It operates with a separate digital supply (VCC) of +2.7V to +5.25V and analog supplies (VDD/VSS) supporting ranges from ±5V to ±15V or single-supply configurations up to 30V. The device utilizes a 3-wire SPI-compatible serial interface for wiper control and includes a power-on reset function that sets the wiper to midscale. Packaged in a compact 10-pin µMAX format, it ensures glitchless switching between taps.

Feature Summary

128-tap resolution with 100kΩ end-to-end resistance
High-voltage operation: ±5V to ±15V dual supply or +10V to +30V single supply
Low-drift temperature coefficients: 35ppm/°C end-to-end, 5ppm/°C ratiometric
Glitchless switching between resistor taps

Applications

LCD screen contrast adjustment
Data-acquisition systems
Mechanical potentiometer replacement
Low-drift programmable gain amplifier
Audio volume control

Procurement Notes

Verify the 'T' suffix indicates tape-and-reel packaging when sourcing this component. Confirm the specific manufacturer documentation matches the Analog Devices/Maxim Integrated datasheet for the MAX5436–MAX5439 series to ensure accurate electrical specifications and pinout definitions are applied during integration.

Selection Notes

Select the MAX5438 variant specifically for its 100kΩ resistance value; the MAX5436 provides 50kΩ. Ensure the application requires volatile memory, as this device does not retain wiper position after power loss. Verify that the analog supply voltage difference (VDD - VSS) remains within the 9V to 31.5V operational range defined in the datasheet.

Part Context

This component belongs to the MAX5436–MAX5439 family of high-voltage digital potentiometers. While the MAX5436/MAX5438 share the same 10-pin µMAX package and functionality, they differ in resistance values (50kΩ vs. 100kΩ). The MAX5437/MAX5439 variants additionally integrate an uncommitted high-voltage amplifier and utilize a 14-pin TSSOP package.