Analog Devices has the ADM6305 and ADM6306 dual-voltage supervisors that provide voltage threshold accuracy of 1.2% for monitoring low voltage core rails.

These new supervisory ICs are designed to monitor two supplies, provide a reset signal to digital processor-based systems and are ideal for dual supply processors and FPGA's.

The devices are available in 1.7 x 3.0mm SOT packages.

Featuring two adjustable, resistor-programmable, under-voltage reset inputs of 0.4 V and 1.23 V, the ADM6305 and ADM6306 can monitor supplies of less than 1.2 V when the threshold is set at 0.4 V.

When a monitored power supply voltage falls below the minimum voltage threshold, a single, active low output triggers a system reset.

Once all voltages rise above the selected threshold level, the reset signal remains low for the reset timeout period.

Four reset timeout options of 1 ms (milliseconds), 20 ms, 140 ms and 1.12 seconds are also provided. The ADM6305 and ADM6306 are available in a 5-lead SOT-23 package and are specified over a temperature range of −40°C to +85°C.

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