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256-Tap, µPoT Low-Drift, Digital Potentiometer

10k µPoT 256-Tap, Low-Drift, Digital Potentiometer

Product Details

Key Features

Parametric specs for Digital Potentiometers
Steps 256
# Potentiometers 1
Control Interface 3-Wire Serial
Taper Linear
Wiper Memory Volatile
REND-TO-END (kΩ) 10
Res. Tol. (%) 25
Temp. Coeff. (ppm/°C) (typ) 35
Wiper Resistance (Ω) (typ) 250
ICC @5V (µA) (max) 5
Package/Pins UMAX/8
Budgetary
Price (See Notes)
1.44
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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
Taper Linear
Wiper Memory Volatile
REND-TO-END (kΩ) 10
Res. Tol. (%) 25
Temp. Coeff. (ppm/°C) (typ) 35
Wiper Resistance (Ω) (typ) 250
ICC @5V (µA) (max) 5
Package/Pins UMAX/8
Budgetary
Price (See Notes)
1.44

Key Features

  • Small Footprint, 8-Pin µMAX Package
  • Ultra-Low 100nA Supply Current
  • +2.7V to +5.5V Single-Supply Operation
  • 256 Tap Positions
  • Low Ratiometric Temperature Coefficient 5ppm/°C
  • Low End-to-End Resistor Temperature Coefficient 35ppm/°C
  • Power-On Reset: Wiper Goes to Midscale (Position 128)
  • Glitchless Switching Between the Resistor Taps
  • 3-Wire SPI™-Interface Compatible
  • 10kΩ Resistor Value

Applications/Uses

  • Adjustable Voltage Reference
  • Low-Drift Programmable-Gain Amplifiers
  • Mechanical Potentiometer Replacements

Description

The MAX5402 µPoT digital potentiometer is a 256-tap variable resistor with 10kΩ total resistance in a tiny 8-pin µMAX® package. This device functions as a mechanical potentiometer, consisting of a fixed resistor string with a digitally controlled wiper contact. It operates from +2.7V to +5.5V single-supply voltages and uses an ultra-low 0.1µA supply current. This device also provides glitchless switching between resistor taps, as well as a convenient power-on reset (POR) that sets the wiper to the midscale position at power-up. A low 5ppm/°C ratiometric temperature coefficient makes it ideal for applications requiring low drift.

The MAX5402 serves well in applications requiring digitally controlled resistors, including adjustable voltage references and programmable gain amplifiers (PGAs). A nominal end-to-end resistor temperature coefficient of 35ppm/°C makes this part suitable for use as a variable resistor in applications such as low-tempco adjustable gain and other circuit configurations. This device is guaranteed over the extended industrial temperature range (-40°C to +85°C).

Simplified Block Diagram

MAX5402: Functional Diagram MAX5402: Functional Diagram Zoom icon

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 .