Digital Potentiometers control volume in audio systems.
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Press Release Summary:
Available in 5 x 4 mm, 8-pin SOIC package, AS1500 series operates over -40 to +125°C temperature range in applications where resistor value must be changed automatically by microprocessor. Functions, unaffected by mechanical disturbances such as vibrations and shocks, are also immune to mechanical abrasion. With 256 programmable steps, series is available with 10, 20, 50, and 100 kohm resistors. Resistance between wiper and endpoint of resistor is linear.
Original Press Release:
austriamicrosystems Unveils AS1500 Family of Digital Potentiometers
Ideal for volume controls in TV sets and audio systems
Unterpremstaetten, Austria (June 18 , 2004) - austriamicrosystems has unveiled the AS1500 family of digital potentiometers. The AS1500 family has been designed for use in applications where a resistor value must be changed automatically by a microprocessor. This makes the AS1500 family ideal for volume controls in TV sets and audio systems, and applications that require line impedance matching, programmable filters or power supply adjustment. They can also be designed in as a replacement solution for mechanical potentiometers.
"The AS1500 family offers several advantages over analog potentiometers," said Walter Moshammer, Marketing Director of austriamicrosystems' communications business. "These include better resolution, since the AS1500 family has 256 programmable steps, and small form factor - the AS1500 is offered in 5 x 4 mm SO-8 packaging. The AS1500 functions are also not affected by mechanical disturbances, such as vibrations and shocks, and are immune from mechanical abrasion, while offering low noise, low temperature drift and high-speed adjustment - which means that fast trimming is possible."
The values of the resistor can be controlled via a 3-wire serial peripheral interface (SPI) - compatible serial data input interface capable of handling programming rates up to 10 MHz. In addition, the AS1500 family is available in four different resistor values.
The AS1500 incorporates a 10 kohm, the AS1501 a 20 kohm, the AS1502 a 50 kohm and the AS1503 a 100 kohm fixed resistor. The wiper contact taps the fixed resistor at points determined by an 8-bit digital codeword. The resistance between the wiper and the endpoint of the resistor is linear. The switching action ensures that no glitches occur.
The AS1500 product family includes a shutdown mode, where it consumes less than 5 µA. All parts are guaranteed to operate over the extended industrial temperature range of -40°C to +125°C.
The AS1500 is priced approximately US $1.10 in a thousand unit volume range. It is now available in an 8-pin SOIC package and is pin-compatible with the AD8400.
About austriamicrosystems
austriamicrosystems AG is a leading designer and manufacturer of highly integrated analog intensive mixed signal ICs. austriamicrosystems combines more than 20 years of design capabilities, product and marketing know-how with its own cutting edge analog manufacturing and test facilities. Operating worldwide with more than 800 employees, austriamicrosystems serves four strategic markets: Communications, Industry & Medical, Automotive and Full-Service Foundry. austriamicrosystems AG is listed on the SWX Swiss Exchange in Zurich (ticker symbol: AMS). For more information, please visit the web site at www.austriamicrosystems.com.
For more information, contact austriamicrosystems at 8601 Six Forks Rd., Suite 400, Raleigh, NC 27615, or call 919-676-5292, email communications@austriamicrosystems.com or visit the Web site at www.austriamicrosystems.com.
For Further Information
austriamicrosystems AG
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Sonja Pieber
Tel: +43 (0) 3136 500 5968
Fax: +43 (0) 3136 500 5420
sonja.pieber@austriamicrosystems.com
www.austriamicrosystems.com
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Tel: (919) 872-8172
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