ams AS1501

Description
The AS1500 is a digital potentiometer with 256 programmable steps. The resistor values can be controlled via a 3-wire serial interface capable of handling programming rates up to 10MHz. The AS1500 is available in four different resistor values:
AS1500: 10kΩ
AS1501: 20kΩ
AS1502: 50kΩ
AS1503: 100kΩ
The wiper contact taps the fixed resistor at points determined by the 8-bit digital code word. The resistance between the wiper and the endpoint of the resistor is linear. The switching action is performed without glitches.
The AS1500 is available in an 8-pin SOIC package. All parts are guaranteed to operate over the extended industrial temperature range of -40° to 125°.

Features
256 taps
Four resistance values available
Standby current: less than 1 μA
3-wire serial data interface
10 MHz update data loading rate
2.7 V to 5.5V single-supply operation
Temperature range: -40° to 125°
8-pin SOIC package

Applications
The AS1500 is ideal for:
Volume controls in TV sets and audio systems
Applications requiring line impedance matching
Programmable filters
Power supply adjustment
Replacement for mechanical potentiometers