Digital Potentiometer, 256 Steps, Serially Interfaced 10k0 pages

AS1500/AS1501/AS1502/AS1503
Digital Potentiometer
Data Sheet
www.austriamicrosystems.com Revision 1.01 1 - 14
1 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 10kÙ, the AS1501 a 20kÙ, the AS1502 a 50kÙ and the AS1503 a 100kÙ fixed resistor. 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 in a way that no glitches occur.
The AS150x is available in an 8-pin SOIC package. All parts are guaranteed to operate over the extended industrial temperature range of –40º to +125º.
2 Key Features
.. 256 - Taps
.. Available in four Resistance values
-AS1500 resistance 10kÙ
-AS1501 resistance 20kÙ
-AS1502 resistance 50kÙ
-AS1503 resistance 100kÙ
.. Standby current - Less than 1 ìA
.. 3-Wire Serial Data Interface
.. 10 MHz Update Data Loading Rate
.. 2.7 V to 5.5 V Single-Supply Operation
.. Temperature Range –40º to +125º
.. 8-pin SOIC Package
3 Applications
The AS1500 is ideal for volume controls in TV sets and audio systems, and applications that require line impedance matching, programmable filters or power supply adjustment. The AS1500 can also be designed in as a replacement for mechanical potentiometers.Figure 1. Application Diagram 88AWB10 Bit Serial Latch8-Bit LatchVCCGNDSDICKCSN