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Single, 256-Tap Volatile, SPI, Low-Voltage Linear Taper Digital Potentiometer

Industry’s Smallest, Lowest Power, Lowest Voltage Digital Potentiometer

Product Details

Key Features

Applications/Uses

Parametric specs for Digital Potentiometers
Steps 256
# Potentiometers 1
Control Interface 3-Wire Serial SPI
Taper Linear
Wiper Memory Volatile
REND-TO-END (kΩ) 10
50
100
Res. Tol. (%) 25
Temp. Coeff. (ppm/°C) (typ) 50
Wiper Resistance (Ω) (typ) 25
ICC @5V (µA) (max) 25
Package/Pins TDFN/8
TDFN-CU/8
Budgetary
Price (See Notes)
0.65
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Simplified Block Diagram

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Parameters

Parametric specs for Digital Potentiometers
Steps 256
# Potentiometers 1
Control Interface 3-Wire Serial SPI
Taper Linear
Wiper Memory Volatile
REND-TO-END (kΩ) 10
50
100
Res. Tol. (%) 25
Temp. Coeff. (ppm/°C) (typ) 50
Wiper Resistance (Ω) (typ) 25
ICC @5V (µA) (max) 25
Package/Pins TDFN/8
TDFN-CU/8
Budgetary
Price (See Notes)
0.65

Key Features

  • Single Linear Taper 256-Tap Positions
  • 10kΩ, 50kΩ, and 100kΩ End-to-End Resistance
  • 1.7V to 5.5V Extended Single Supply
  • 0 to 5.25V H, W, L Operating Voltage Independent of VDD
  • 1µA (typ) Supply Current in Low-Power Mode
  • ±1.0 LSB INL, ±0.5 LSB DNL (max) Wiper Accuracy
  • Power-On Sets Wiper to Midscale
  • 50ppm/°C End-to-End Temperature Coefficient
  • 5ppm/°C Ratiometric Temperature Coefficient
  • -40°C to +125°C Operating Temperature Range
  • 2mm x 2mm, 8-Pin TDFN Package
  • SPI-Compatible Serial Interface

Applications/Uses

  • Battery-Powered Systems
  • Mechanical Potentiometer Replacement
  • Portable Electronics
  • System Calibration

Description

The MAX5394 single, 256-tap volatile, low-voltage linear taper digital potentiometer offers three end-to-end resistance values of 10kΩ, 50kΩ, and 100kΩ. Potentiometer terminals are independent of supply for voltages up to 5.25V with single-supply operation from 1.7V to 5.5V (charge pump enabled). User-controlled shutdown modes allow the H, W, or L terminal to be opened with the wiper position set to zero-code, midcode, full-code, or the value contained in the wiper register. Ultralow-quiescent supply current (< 1µA) can be achieved for supply voltages between 2.6V and 5.5V by disabling the internal charge pump and not allowing potentiometer terminals to exceed the supply voltage by more than 0.3V. The MAX5394 provides a low 50ppm/°C end-to-end temperature coefficient and features a SPI serial interface.

The small package size, low operating supply voltage, low supply current, and automotive temperature range of the MAX5394 make the device uniquely suited for the portable consumer market and battery-backup industrial applications.

The MAX5394 is available in a lead-free, 8-pin TDFN (2mm x 2mm) package. The device operates over the -40°C to +125°C automotive temperature range.

Simplified Block Diagram

MAX5394: Functional Diagram MAX5394: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .