austriamicrosystems introduces very low power triple voltage µP supervisory for multi-voltage systems

Description

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).
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