General Description

The AS1500 is a digital potentiometer with 256 programmable steps. The values of the resistor can be controlled via 3 wire serial interface capable to handle programming rates up to 10MHz. The AS1500 is available in four different resistor values. The AS1500 incorporates a 10kΩ, the AS1501 a 20kΩ, the AS1502 a 50kΩ and the AS1503 a 100kΩfixed resistor.

Key Features

-  256-Position

-  Available in four Resistance values

    - AS1500 resistance 10kOhms

    - AS1501 resistance 20kOhms

    - AS1502 resistance 50kOhms

    - AS1503 resistance 100kOhms

-  Power Shutdown —Less than 1 µA

-  3-Wire SPI-Compatible Serial Data Input

-  10 MHz Update Data Loading Rate

-  2.7 V to 5.5 V Single-Supply Operation

-  Temperature Range –40°C to +125°C

-  Package SO-8

-  Compatible to AD8400

Applications

-  Line Impedance Matching

-  Volume Control, Panning

-  Mechanical Potentiometer Replacement

-  Power Supply Adjustment

-  Programmable Filters, Delays, Time Constants