AD5290:  Compact +30V/±15V 256-Position Digital Potentiometer

The AD5290 is a low cost, compact 2.9 mm × 3 mm +30V/±15V, 256-position digital potentiometer. This device performs the same electronic adjustment function as mechanical potentiometers or variable ...More

AD5290:  Compact +30V/±15V 256-Position Digital Potentiometer

Product Description

The AD5290 is a low cost, compact 2.9 mm × 3 mm +30V/±15V, 256-position digital potentiometer. This device performs the same electronic adjustment function as mechanical potentiometers or variable resistors, with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance.

The wiper settings are controllable through an SPI compatible digital interface. The resistance between the wiper and either end point of the fixed resistor varies linearly with respect to the digital code transferred into the RDAC latch.

The AD5290 is available in 10k, 50k, and 100kΩ in compact MSOP-10 package. AD5290 can be operated from a single supply to +30 V or dual supply to ±15 V. All parts are guaranteed to operate over the automotive temperature range of -40°C to +125°C.

Note:
The terms digital potentiometer and RDAC are used interchangeably.

Features

  • 256-position
  • +2.7V to +30V Single Supply Operation
  • ±2.7V to ±15V Dual Supply Operation
  • End-to-end resistance 10 kΩ , 50 kΩ , 100 kΩ
  • Low temperature coefficient 35 ppm/°C
  • Power-on preset to midscale
  • SPI compatible interface
  • Automotive temperature range
    –40°C to +105°C
  • Compact MSOP-10 (3 mm × 4.9 mm) package

Diagrams

AD5290 Diagram
Functional Block Diagram for AD5290

Specifications

# Channels 1
# Positions 256
Memory Type Volatile
Interface SPI
Resistor Values (kOhms) 10, 50, 100
Bipolar Voltage Range (V) ±15V
Voltage Range (V) +30V
Supply Current (max) 10µA
Temp. Range -40 °C to.. 105Deg
Absolute Tempco (ppm/°C) 35ppm/C
Package MSOP

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