AD5203:  4-Channel, 64-Position Digital Potentiometer

The AD5203 contains four, 64-position digitally-controlled variable resistors (VR). These parts perform the same electronic adjustment function as a potentiometer, trimmer or variable resistor. ...More

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AD5203:  4-Channel, 64-Position Digital Potentiometer

Product Description

The AD5203 contains four, 64-position digitally-controlled variable resistors (VR). These parts perform the same electronic adjustment function as a potentiometer, trimmer or variable resistor. Each VR offers a completely programmable value of resistance, between the A terminal and the wiper or the B terminal and the wiper. The fixed A to B terminal resistance of 10K ohm, or 100K ohm has a ±1% channel-to-channel matching tolerance with a nominal temperature coefficient of 700 ppm/°C.

Wiper position programming defaults to midscale at system power ON when using the RS pin. Once powered the wiper position is programmed by a standard SPI, Microwire compatible serial data interface. In addition, a serial data output pin is available to daisy chain multiple packages to minimize the number of package-decode pins required from the system micro controller.

The AD5203 is available in a 24-lead narrow-body plastic DIP, the 24 lead surface mount package, and the compact 1.1mm thin TSSOP-24 package. All parts are guaranteed to operate over the extended-industrial-temperature range of -40°C to +85°C.

For pin compatible higher resolution applications, see the 256-Position AD8403 product.

Applications
  • Mechanical Potentiometer Replacement
  • Programmable Filters, Delays, Time Constants
  • Volume Control, panning
  • Line Impedance Matching
  • Power Supply Adjustment operating from +3 to +5 volt power supplies

    • Features

    • 64 Position
    • Replaces Four Potentiometers
    • 10 kO, 100 kO
    • Power Shutdown - Less than 5 µA
    • 3-Wire SPI-Compatible Serial
      Data Input
    • 10 MHz Update Data Loading Rate
    • +2.7 V to +5.5 Single Supply Operation
    • Midscale Preset

    Diagrams

    AD5203 Diagram
    Functional Block Diagram for AD5203

    Specifications

    # Channels 4
    # Positions 64
    Memory Type Volatile
    Interface SPI
    Resistor Values (kOhms) 10, 100
    Voltage Range (V) +5.5V
    Supply Current (max) 0.01µA
    Temp. Range -40 °C to.. 85Deg
    Absolute Tempco (ppm/°C) 700ppm/C
    Package PDIP,SOIC,TSSOP

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