Triple Voltage Supervisory Circuits consume only 6.2 µA.
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Press Release Summary:
Series AS1920/AS1922 monitors 3 voltages with up to ±1.5% threshold accuracy and glitch immunity. Units are available with factory trimmed +3 V primary and +1.8 V secondary reset, while 3rd input can be user adjusted via external resistors. Reset is maintained for minimum timeout period after all supplies are above reset thresholds. Housed in 5-pin SOT23 package, Model AS1920 provides active-low push/pull output, while Model AS1922 provides active-low open-drain output.
Original Press Release:
austriamicrosystems Introduces Very Low Power Triple Voltage µp Supervisory for Multi-Voltage Systems
Consuming only 6.2µA the AS1920/AS1922 family of triple voltage µP supervisory circuits is ideal for battery-powered equipment, computers, intelligent instruments, critical µP and µC power monitoring, controllers and automotive applications
Unterpremstaetten, Austria (March 31, 2006) - austriamicrosystems (SWX: AMS), a leading global designer and manufacturer of analog integrated circuits (ICs) for communication, industrial, medical and automotive applications, has extended its family of µP supervisory circuits with the very low power AS1920/AS1922 product family.
Continuing austriamicrosystems' industry leadership in low power consumption, already demonstrated by the AS1904-06 - the world's lowest power consumption single voltage supervisory - the new AS1920/AS1922 family of triple voltage µP supervisory circuits consumes only 6.2µA current which is up to 38% less than competing solutions.
"Field programmable gate arrays typically require multiple supply voltages. For example systems with core, I/O peripherals and memory require three supply voltages. For these systems to function reliably, each supply must be monitored to ensure it is within its valid operational range," said Walter Moshammer, marketing director for standard linear at austriamicrosystems. "Delivering 1.5% accuracy, and ensured to be in the correct state for VCC higher than +1.0V, the AS1920/AS1922 family is ideally
suited to these needs."
The devices offer the ability to monitor three voltages with up to ±1.5% threshold accuracy and glitch immunity. In addition, the new ICs are available with precise and factory trimmed +3V primary and secondary +1.8V reset, while a third input can be user adjusted via external resistors. The reset is maintained for a minimum timeout period after all supplies are above their reset thresholds.
The devices are available in a small 5-pin SOT23 package with the reset output types of active-low push/pull (AS1920) and active-low open-drain (AS1922). For product specific information and to request samples please go to
http://austriamicrosystems.com/03products/15_microprocessor_supervisors.htm
About austriamicrosystems
austriamicrosystems is a leading designer and manufacturer of high performance analog ICs, combining almost 25 years of analog design capabilities and system know-how with its own state-of-the-art manufacturing and test facilities. austriamicrosystems leverages its expertise in low power and high accuracy to provide industry-leading customized and standard analog products. Operating worldwide with more than 850 employees, austriamicrosystems focuses on the areas of power management, sensors & sensor interfaces, portable audio and car access in its markets Communications, Industry & Medical and Automotive, complemented by its Full Service Foundry activities. austriamicrosystems is listed on the SWX Swiss Exchange in Zurich (ticker symbol: AMS). For more information visit www.austriamicrosystems.com
