Raleigh, NC—Austriamicrosystems' AS1920/AS1922, touting very low power dissipation, is a triple-voltage supervisor IC for microprocessor-based systems. This chip generates a reset when at least one of the three monitored supply voltages fall below its respective trip threshold.
Available with active-low push/pull (AS1920-18) or active-low open-drain (AS1922-18) outputs, the chip features a monitoring accuracy of ±1.5 percent and an operating current of just 6.5 microamps, which is 38 percent less than that of competing solutions, according to the company. The chip is available with precise, factory trimmed +3-volt and +1.8 volt inputs, and a third input that can be user adjusted (external resistors required). The chip's reset is maintained for a minimum time output period (reset time delay is 200 ms) after all supplies are above their reset thresholds.
Click here for the product datasheet. The chip, in a 5-pin SOT-23, is priced at $1.25 each in 1k quantities.
Austriamicrosystems, 1-919-676-5292, www.austriamicrosystems.com