ADM13305-4ARZ

ADM13305 is a dual voltage supervisor designed to monitor two supplies and provide a reset signal to DSP and microprocessor-based systems. It offers one internally fixed threshold and one externally programmable threshold via a resistor string. During power-up, RESET is asserted when the supply voltage exceeds 1.1V. The device then monitors the SENSEv input pins and holds the RESET output low as long as either of the SENSEv inputs remains below the rising threshold voltage, VIT+. Once the supplies monitored at the SENSEv inputs rise above their associated thresholds, the reset signal remains low for the reset timeout period before deasserting. Subsequently, if a voltage monitored by the SENSEv pins falls below its associated falling threshold, VIT, the RESET output asserts. It is used in application such as supervising DSPs/microcontrollers, industrial and portable equipment, wireless systems, notebook/desktop computers etc.

• Dual supervisory circuits
• Watchdog timeout is 1.6sec typical at (VI(SENSEv) ≥ VIT+ + 0.2V, MR ≥ 0.7 × VDD)
• Nominal supervised voltage (SENSE1) is 3.3V, nominal supervised voltage (SENSE1) is adjustable
• Threshold voltage SENSE1 is 2.93V typ, threshold voltage SENSE2 is 0.6V typ
• Supply current is 40μA maximum at (VDD = 2.7V to 5.5V)
• RESET valid from VDD ≥ 1.1V, push-pull RESET and RESET outputs
• Operating voltage range is 2.7V to 5.5V
• Input capacitance is 10pF typical at (VI = 0V to VDD )
• Operating temperature is -40°C to +85°C
• Package style is 8-lead SOIC-N

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party