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ADM691AN Arkusz danych(PDF) 9 Page - Analog Devices |
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ADM691AN Arkusz danych(HTML) 9 Page - Analog Devices |
9 / 16 page Typical Performance Curves–ADM690–ADM695 5.00 4.80 0 100 4.95 4.85 20 4.90 80 60 40 V CC = 5V T A = +25°C SLOPE = 1.5 Ω I OUT – mA Figure 8. VOUT vs. IOUT Normal Operation 1.303 1.299 20 120 1.302 1.300 40 1.301 100 80 60 TEMPERATURE – °C Figure 11. PFI Input Threshold vs. Temperature 6 1.25 0 2 0 1 3 4 5 0.8 0.5 0.6 0.3 0.4 0.7 0.2 0.1 V PFI 1.3V 30pF PFO V CC = 5V T A = +25°C 1.35 TIME – µs Figure 14. Power Fail Comparator Response Time 2.80 2.76 0 1000 2.79 2.77 200 2.78 800 600 400 I OUT – µA SLOPE = 20 Ω V CC = 0V V BATT = +2.8V T A = +25°C Figure 9. VOUT vs. IOUT Battery Backup 53 49 20 120 52 50 40 51 100 80 60 V CC = +5V TEMPERATURE – °C ADM690 ADM691 ADM692 ADM693 Figure 12. Reset Active Time vs. Temperature 6 90 1.25 0 1.35 2 0 1 3 4 5 80 50 60 30 40 70 20 10 V PFI 1.3V 30pF PFO V CC = 5V T A = +25°C TIME – µs Figure 15. Power Fail Comparator Response Time 10 90 100 0% 3.36 V 500ms A4 1V 1V Figure 10. Reset Output Voltage vs. Supply Voltage 4.70 4.62 20 120 4.68 4.64 40 4.66 100 80 60 TEMPERATURE – °C V CC = +5V POWER-UP POWER-DOWN ADM690 ADM691 ADM694 ADM695 Figure 13. Reset Voltage Threshold vs. Temperature 6 0 1.8 1.25 0 1.35 2 0 1 3 4 5 1.6 1.0 1.2 0.6 0.8 1.4 0.4 0.2 V CC = 5V T A = +25°C V PFI 1.3V 30pF PFO +5V 10k +5V TIME – µs Figure 16. Power Fail Comparator Response Time with Pull-Up Resistor REV. A –9– |
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