Unterpremstaetten, Austria - 17 September 2004 - austriamicrosystems has launched the AS1904/5/6 family of ultra low power supervisory circuits. With a current consumption of only 150nanoAmperes (typical) the devices are ideal for portable/battery-powered equipment, computers, controllers, critical µP and µC power monitoring, intelligent instruments and automotive applications. The AS1904/5/6 family delivers the world's lowest power consumption and additionally reduces costs by eliminating all external components.

Highly reliable, the AS1904/5/6 family devices monitor the supply voltage of digital systems and microprocessors and initiate a reset if the voltage decreases below a certain threshold. The state of the reset is active for a predefined time after the supply voltage has risen above the threshold.

The product family offers three devices with different output drivers. The AS1904 has a push-pull driver with an active low reset. The AS1905 uses the same output stage, but has an active high reset. The AS1906 has an open drain output with an active low reset. Each device is of-fered with four typical time out periods: 5ms, 20ms, 100ms and 500ms (factory trimmed).

Significantly reduced power consumption vs. closest competitor

"The outstanding low current consumption of only 150nA (typ) at 3.3V makes the AS1904/5/6 family ideal for use in portable applications" said Walter Moshammer, Marketing Director of austriamicrosystems
' communications business unit. "All devices of the AS1904/5/6 family oper-ate down to a voltage of 1V. A hysteresis in the threshold guarantees that fast transients and noise on the supply line do not lead to unwanted resets. Furthermore the reset threshold is fac-tory-trimmable between 2.2V and 3.1V with 1.5% tolerance. The circuit is designed to be espe-cial robust against RF-interference".

The AS1904/5/6 family of devices is available immediately in a 3-pin SOT23 packaging.

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 world-wide 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).