DSP, Micros & Memory


Power supply voltage monitor

20 April 2005 DSP, Micros & Memory

Analog Devices offers a wide range of reset generator circuits designed for use in microprocessor-based systems to monitor power supply voltage levels from 5 V down to 2,5 V. Their reset output signals are asserted whenever the supply voltage falls below a preset threshold level. Reset remains active for a fixed timeout period after the supply voltage has returned to a valid level, allowing the supply voltage time to stabilise before the microprocessor starts up again.

The various models provide a choice of active low or active high and push-pull or open-drain output stages. Key features are: 30 ms minimum reset timeout; active low open-drain reset output; low power consumption (10 μA); -40 to


+125°C operation; available in 3-lead SC70 package.





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