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Analog Devices MAX5405EUB+ — DC-DC Power Modules

MAX5405EUB+ Digital Potentiometer, 100kΩ, 256 Taps, SPI

MPNMAX5405EUB+
End of Life

Maxim Integrated MAX5405EUB+ digital potentiometer, dual 100kΩ, 256 taps, linear taper, SPI interface, 10-uMAX/uSOP package, -40°C to 85°C.

$6.95Ref. price · indicative, final on quote
Packaging10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX5405EUB+ specifications
ParameterValue
Memory typeVolatile
MountingSurface Mount
Supply voltage2.7V ~ 5.5V
InterfaceSPI
Operating temperature-40°C ~ 85°C
TaperLinear
PackageTube
Tolerance±25%
ConfigurationPotentiometer
Number of taps256
Case10-TFSOP, 10-MSOP (0.118\", 3.00mm Width)
Resistance100k
Number of circuits2
Temperature coefficient35ppm/°C
Resistance - wiper (Ohms)275

Product details

What this dual 100kΩ digital pot brings to the board

The MAX5405EUB+ from Maxim Integrated is a dual-channel digital potentiometer with a linear taper, 256 wiper taps per channel, and a total end-to-end resistance of 100kΩ. It communicates over an SPI interface, which means the wiper position is set by a simple serial write — no external DAC or op-amp needed for a programmable voltage divider or adjustable reference.

SPI interface and volatile memory — design constraints at a glance

The wiper setting is volatile, so on power-up the wiper returns to its default mid-scale position. Plan for a hardware reset or a software write in the init routine.

Lifecycle and sourcing — no obsolescence headache here

Frequently asked questions

What pin-compatible alternatives exist for the MAX5405EUB+?

The MAX5405EUB+ is a dual 100kΩ linear-taper digital pot in a 10-uMAX/uSOP package. Pin-compatible siblings in the same family include the MAX5406 (dual 50kΩ) and MAX5407 (dual 10kΩ) — same footprint, same SPI interface, same supply range, just different resistance values. If your BOM needs a different resistance, one of those may drop in without a layout change.

What is the MAX5405EUB+'s listed taper?

The taper is Linear. That means the wiper resistance changes linearly with the digital code — no logarithmic curve. It is the right choice for voltage dividers, programmable references, and gain-setting resistors; not for audio volume control where an audio-taper (log) pot is preferred.