AD5241:  I2C® Compatible Digital Potentiometer

The AD5241 and AD5242 provide a single-/dual-channel, 256-position, digitally controlled variable resistor (VR) device. These devices perform the same electronic adjustment function as a ...More

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AD5241:  I2C® Compatible Digital Potentiometer

Product Description

The AD5241 and AD5242 provide a single-/dual-channel, 256-position, digitally controlled variable resistor (VR) device. These devices perform the same electronic adjustment function as a potentiometer, trimmer or variable resistor. Operating from single (+2.7 V to +5.5 V) or dual supplies (±2.7 V), these parts are ideal for applications in Communications, Multi-Media, Video and Audio equipment. Stable 30 ppm/°C, low noise settings result from internal SiCr thin film resistor technology used for the resistor segments. Internal power ON reset to midscale position speeds up initial circuit adjustment. Two programmable logic outputs are available to drive digital loads, gates, LED drivers, analog switches, etc. to save micro-controller pin usage. Additional package address decode pins allow multiple packages to share the same 2-wire I2C bus. Devices are available in the 1.1 mm thin TSSOP 14- and 16-lead packages.

Features

  • Replaces Potentiometers In New Designs
  • 10K, 100K and 1M Ω End-to-End Terminal Resistances
  • 2-Wire I2C Compatible Digital Interface
  • Low Drift 30 ppm/°C Absolute Resistor Temperature Coefficient

Diagrams

AD5241 Diagram
Functional Block Diagram for AD5241

Specifications

# Channels 1
# Positions 256
Memory Type Volatile
Interface I2C
Resistor Values (kOhms) 10, 100, 1M
Bipolar Voltage Range (V) ±3V
Voltage Range (V) +5.5V
Supply Current (max) 0.1µA
Temp. Range -40 °C to.. 105Deg
Absolute Tempco (ppm/°C) 30ppm/C
Package SOIC,TSSOP

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AD5161 1 256 Volatile I2C, SPI 5, 10, 50, 100 - +5.5 3µA 125 35 $0.65
AD5241 1 256 Volatile I2C 10, 100, 1M ±3 +5.5 0.1µA 105 30 $0.93
AD5200 1 256 Volatile SPI 10, 50 ±3 +5.5 15µA 85 500 $0.89
AD8400 1 256 Volatile SPI 1, 10, 50, 100 - +5.5 0.01µA 125 500 $1.13
AD5260 1 256 Volatile SPI 20, 50, 200