Features: Specified over TemperatureLow Power Consumption (17 A)Precision Voltage Monitor: 2.5 V, 3 V, 3.3 V, 5 V OptionsReset Assertion Down to 1 V VCC140 ms Min Power-On Reset Open-Drain RESET Output (ADM803) Push-Pull RESET Output (ADM809) Push-Pull RESET Output (ADM810)SC70 and SOT-23 Package...
ADM803: Features: Specified over TemperatureLow Power Consumption (17 A)Precision Voltage Monitor: 2.5 V, 3 V, 3.3 V, 5 V OptionsReset Assertion Down to 1 V VCC140 ms Min Power-On Reset Open-Drain RESET Ou...
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The ADM803/ADM809/ADM810 supervisory circuits monitor the power supply voltage in microprocessor systems. They provide a reset output during power-up, power-down, and brownout conditions. On power-up, an internal timer holds reset asserted for 240 ms. This holds the microprocessor in a reset state until conditions have stabilized. The RESET output remains operational with VCC as low as 1 V. The ADM803/ADM809/ADM810 provide an active low reset signal (RESET), while the ADM81 prvides an active high signal (RESET) output. The ADM809 nd ADM810 have push-pull outputs whereas the ADM803 has an pen-drain output, which requires an external pull-up resistor.
Seven reset threshold voltage options of ADM803/ADM809/ADM810 are available, suitable for onitoring a variety of supply voltages. Refer to Table I.
The reset comparator features of ADM803/ADM809/ADM810 built-in glitch immunity, making t immune to fast transients on VCC.
The ADM803/ADM809/ADM810 consume only 17 µA, making it suitable for low power portable equipment. The ADM803 is available in a 3-lead SC70; the ADM809/ADM810 is available in 3-lead SOT-23 and SC70 packages.