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ADM1818-10AKS-RL7 Datasheet(PDF) 7 Page - Analog Devices |
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ADM1818-10AKS-RL7 Datasheet(HTML) 7 Page - Analog Devices |
7 / 16 page ADM1810 to ADM1813/ADM1815 to ADM1818 Rev. E | Page 7 of 16 THEORY OF OPERATION TIMING DIAGRAMS FOR ALL DEVICES The following two timing diagrams are valid for ADM1810, ADM1811, ADM1812, ADM1813, ADM1815, ADM1816, ADM1817, and ADM1818. VCC VCC TRIP POINT (MAX) VCC TRIP POINT (MIN) VOL VCC TRIP POINT VCC TO RESET DELAY RST Figure 9. Power-Down Timing Diagram VCC VCC TRIP POINT (MAX) RESET ACTIVE TIMEOUT VCC TRIP POINT (MIN) VCC TRIP POINT RST Figure 10. Power-Up Timing Diagram ADM1813 AND ADM1818 The ADM1813 and ADM1818 are low cost voltage monitoring devices featuring an open-drain output and optional push-button reset function. ADM1813/ ADM1818 VCC GND RST VCC MICRO- PROCESSOR RESET Figure 11. ADM1813/ADM1818 Typical Application An optional push-button reset switch can be connected between RST and ground. Pressing this switch pulls the reset output low. If the push-button reset button pulls the RST output low for a period greater than 1 μs when the reset button releases the RST line to float high, then the RST line stays low for another 150 ms typical. VOLTAGE INPUT HIGH PUSH-BUTTON TIME RESET TIMEOUT VOLTAGE INPUT LOW Figure 12. Push-Button Reset Timing Diagram The ADM1818 range has 2.88 V and 2.55 V (typical) trip point options that allow the user to monitor 3.3 V and 3 V supplies. For 5 V monitoring requirements, the ADM1813 range has 4.62 V and 4.35 V (typical) trip point options. ADM1810, ADM1812, ADM1815, AND ADM1817 The ADM1812 is a 5 V supply monitor with an active high push- pull output and trip point options of 4.62 V and 4.35 V typical. The ADM1810 is similar to the ADM1812, except that the ADM1810 has an active low push-pull output stage. The ADM1817 is suitable for monitoring 3.3 V, 3 V, and 2.5 V supplies, with an active high push-pull output and trip point options of 3.06 V, 2.88 V, 2.55 V, 2.31 V, and 2.18 V typical. The ADM1815 is similar to the ADM1817, except that the ADM1815 has an active low push-pull output stage. The ADM1810/ADM1812/ADM1815/ADM1817 can connect directly to most microprocessor reset inputs without the need for external components. ADM1810/ ADM1812/ ADM1815/ ADM1817 VCC GND RST/RST VCC MICRO- PROCESSOR RESET Figure 13. ADM1810/ADM1812/ADM1815/ADM1817 Typical Application ADM1811 AND ADM1816 The ADM1811 is a 5 V supply monitor with an active low open- drain output and trip point options of 4.62 V and 4.35 V typical. The ADM1816 also has an active low open-drain output but is suitable for monitoring lower voltage supplies of 3.3 V, 3 V, and 2.5 V. ADM1811/ ADM1816 VCC GND RST VCC MICRO- PROCESSOR RESET Figure 14. ADM1811/ADM1816 Typical Application |
Similar Part No. - ADM1818-10AKS-RL7 |
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Similar Description - ADM1818-10AKS-RL7 |
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