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Analog Devices MAX5438EUB+ — DC-DC Power Modules
Analog Devices

MAX5438EUB+ Digital Potentiometer, 100kΩ, 128 Taps, SPI

MPNMAX5438EUB+
End of Life

Maxim Integrated MAX5438EUB+, digital potentiometer, linear taper, 100kΩ resistance, 128 taps, SPI interface, volatile memory, single circuit, 10-uMAX/uSOP package, -40°C to +85°C, ROHS3 compliant.

$10.99Ref. price · indicative, final on quote
MAX5438EUB+ datasheet
Packaging10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

MAX5438EUB+ Technical Specifications
ParameterValue
Memory typeVolatile
Mounting typeSurface Mount
Voltage10V ~ 30V, ±5V ~ 15V
InterfaceSPI
Operating temperature-40°C ~ 85°C
TaperLinear
PackageTube
Tolerance±25%
ConfigurationPotentiometer
Number of taps128
Case10-TFSOP, 10-MSOP (0.118\", 3.00mm Width)
Resistance100k
Number of circuits1
Temperature coefficient35ppm/°C
Resistance - wiper (Ohms)900

Product details

What this part is and where it fits

The MAX5438EUB+ is a single-channel, 128-tap digital potentiometer with a linear taper and 100kΩ end-to-end resistance. It is controlled via an SPI interface.

Key ratings and what they mean for the BOM

The 100kΩ resistance is a common value for audio level control, offset adjustment, and programmable reference dividers. The linear taper means wiper resistance changes linearly with the digital code.

Lifecycle and sourcing posture

The MAX5438EUB+ carries an Active lifecycle status and is ROHS3 compliant. The 10-uMAX/uSOP package (3mm x 3mm body, 0.118" width) is a standard footprint shared with other Maxim digital pots, so second-source options exist within the family if needed.

Frequently asked questions

What is the difference between MAX5438EUB+ and MAX5438EUB+T?

The difference is the packaging and shipping medium: MAX5438EUB+ ships in a Tube, while the MAX5438EUB+T suffix indicates Tape & Reel packaging. The die, electrical specs, and package (10-uMAX/uSOP) are identical.

What is the taper of the MAX5438EUB+?

The taper is Linear. The wiper resistance changes linearly with the digital code, suitable for calibration and divider applications but not for logarithmic audio volume control.