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ISL43640 Datasheet(PDF) 9 Page - Intersil Corporation |
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ISL43640 Datasheet(HTML) 9 Page - Intersil Corporation |
9 / 13 page 9 FN6043.3 January 23, 2006 voltage divider action of the switch OFF impedance and the load impedance. Leakage Considerations Reverse ESD protection diodes are internally connected between each analog-signal pin and both V+ and GND. One of these diodes conducts if any analog signal exceeds V+ or GND. Virtually all the analog leakage current comes from the ESD diodes to V+ or GND. Although the ESD diodes on a given signal pin are identical and therefore fairly well balanced, they are reverse biased differently. Each is biased by either V+ or GND and the analog signal. This means their leakages will vary as the signal varies. The difference in the two diode leakages to the V+ and GND pins constitutes the analog- signal-path leakage current. All analog leakage current flows between each pin and one of the supply terminals, not to the other switch terminal. This is why both sides of a given switch can show leakage currents of the same or opposite polarity. There is no connection between the analog signal paths and V+ or GND. Typical Performance Curves TA = 25°C, Unless Otherwise Specified FIGURE 8. ON RESISTANCE vs SUPPLY VOLTAGE FIGURE 9. ON RESISTANCE vs SWITCH VOLTAGE FIGURE 10. DIGITAL SWITCHING POINT vs SUPPLY VOLTAGE FIGURE 11. SUPPLY CURRENT vs DIGITAL ADDRESS INPUT VOLTAGE 25 7 9 11 12 0 100 200 300 400 500 V+ (V) VCOM = (V+) - 1V ICOM = 1mA -40 °C 85 °C 25 °C 3 4 6 8 10 13 VCOM (V) 0 4 6 8 10 12 2 V+ = 3.3V ICOM = 1mA 30 40 50 60 70 80 85 °C -40 °C 25 °C V+ = 12V 60 80 100 120 140 25 °C -40 °C 85 °C V+ = 5V 75 100 150 200 225 175 125 25 °C -40 °C 85 °C V+ (V) 25 3.0 2.5 2.0 1.5 1.0 0.5 34 6789 10 11 12 13 3.0 2.5 2.0 1.5 1.0 0.5 -40 °C VINL 85 °C -40 °C 85 °C VINH 25 °C 25 °C 01.5 0.51 22.5 33.5 44.5 5 70 60 50 40 30 20 10 0 VIN(ADD) (V) V+ = +5V ISL43640 |
Similar Part No. - ISL43640_06 |
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Similar Description - ISL43640_06 |
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