Supervisory Circuit consumes 150 nA of current.
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Press Release Summary:
Monitoring the supply voltage of digital systems and microprocessors, AS1904/5/6 family initiates reset if voltage drops below certain threshold. Three devices with different output drivers are offered: AS1904 has pushpull driver with active low reset; AS1905 uses same output stage but has active high reset; and AS1906 has open drain output with active low reset. Each device comes with 4 typical time out periods: 5, 20, 100, and 500 ms.
Original Press Release:
austriamicrosystems AS1904/5/6 Family of Ultra Low Power Supervisory Circuits Delivers World's Lowest Power Consumption
Ideal for Portable/Battery-Powered Equipment, Computers, Intelligent Instruments, Critical µP and µC Power Monitoring, Controllers, and Automotive Applications
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 150 nanoAmperes (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 pushpull 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 offered with four typical time out periods: 5ms, 20ms, 100ms and 500ms (factory trimmed).
"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 operate 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 factory trimmable
between 2.2V and 3.1V with 1.5% tolerance. The circuit is designed to be especial 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 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 further information
austriamicrosystems AG
Media Relations
Sonja Pieber
Tel: +43 (0) 3136 500 5968
Fax +43 (0) 3136 500 5420
sonja.pieber@austriamicrosystems.com
www.austriamicrosystems.com
