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10-Bit, Nonvolatile, Linear-Taper Digital Potentiometers

Single 1024-Tap Digital Potentiometers

Product Details

Key Features

Parametric specs for Digital Potentiometers
Steps 1024
# Potentiometers 1
Control Interface 3-Wire Serial SPI
Taper Linear
Wiper Memory Non-Volatile
REND-TO-END (kΩ) 10
Res. Tol. (%) 25
Temp. Coeff. (ppm/°C) (typ) 35
ICC @5V (µA) (max) 1
Package/Pins TQFN/16
TSSOP/14
Budgetary
Price (See Notes)
2.65
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Simplified Block Diagram

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Parameters

Parametric specs for Digital Potentiometers
Steps 1024
# Potentiometers 1
Control Interface 3-Wire Serial SPI
Taper Linear
Wiper Memory Non-Volatile
REND-TO-END (kΩ) 10
Res. Tol. (%) 25
Temp. Coeff. (ppm/°C) (typ) 35
ICC @5V (µA) (max) 1
Package/Pins TQFN/16
TSSOP/14
Budgetary
Price (See Notes)
2.65

Key Features

  • 1024 Tap Positions
  • Power-On Recall of Wiper Position from Nonvolatile Memory
  • 16-Pin (3mm x 3mm x 0.8mm) TQFN or 14-Pin TSSOP Package
  • 35ppm/°C End-to-End Resistance Temperature Coefficient
  • 5ppm/°C Ratiometric Temperature Coefficient
  • 10kΩ and 50kΩ End-to-End Resistor Values
  • Pin-Selectable SPI-Compatible Serial Interface or Up/Down Digital Interface
  • 1µA (max) Standby Current
  • Single +2.7V to +5.25V Supply Operation
  • Dual ±2.5V Supply Operation

Applications/Uses

  • Gain and Offset Adjustment
  • LCD Contrast Adjustment
  • Low-Drift Programmable Gain Amplifiers
  • Mechanical Potentiometer Replacement
  • Pressure Sensors

Description

The MAX5481–MAX5484 10-bit (1024-tap) nonvolatile, linear-taper, programmable voltage-dividers and variable resistors perform the function of a mechanical potentiometer, but replace the mechanics with a pin-configurable 3-wire serial SPI™-compatible interface or up/down digital interface. The MAX5481/MAX5482 are 3-terminal voltage-dividers and the MAX5483/MAX5484 are 2-terminal variable resistors.

The MAX5481–MAX5484 feature an internal, nonvolatile, electrically erasable programmable read-only memory (EEPROM) that stores the wiper position for initialization during power-up. The 3-wire SPI-compatible serial interface allows communication at data rates up to 7MHz. A pin-selectable up/down digital interface is also available.

The MAX5481–MAX5484 are ideal for applications requiring digitally controlled potentiometers. Two end-to-end resistance values are available (10kΩ and 50kΩ) in a voltage-divider or a variable-resistor configuration (see the Selector Guide in the full data sheet). The nominal resistor temperature coefficient is 35ppm/°C end-to-end, and only 5ppm/°C ratiometric, making these devices ideal for applications requiring low-temperature-coefficient voltage-dividers, such as low-drift, programmable gain-amplifiers.

The MAX5481–MAX5484 operate with either a +2.7V to +5.25V single power supply or ±2.5V dual power supplies. These devices consume 400µA (max) of supply current when writing data to the nonvolatile memory and 1.0µA (max) of standby supply current. The MAX5481–MAX5484 are available in a space-saving (3mm x 3mm), 16-pin TQFN, or a 14-pin TSSOP package and are specified over the extended (-40°C to +85°C) temperature range.

Simplified Block Diagram

MAX5481, MAX5482, MAX5483, MAX5484: Pin Configurations MAX5481, MAX5482, MAX5483, MAX5484: Pin Configurations 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 .