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ISL84781 Datasheet(PDF) 8 Page - Intersil Corporation |
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ISL84781 Datasheet(HTML) 8 Page - Intersil Corporation |
8 / 11 page 8 FN6095.4 October 28, 2010 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 vs SWITCH VOLTAGE FIGURE 9. ON-RESISTANCE vs SWITCH VOLTAGE FIGURE 10. ON-RESISTANCE vs SWITCH VOLTAGE FIGURE 11. CHARGE INJECTION vs SWITCH VOLTAGE 01 2 3 4 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 VCOM (V) ICOM = 100mA V+ = 3V V+ = 2.7V V+ = 1.8V V+ = 3.6V V+ = 1.65V 0.30 0.35 0.40 0.45 0.50 0.55 VCOM (V) 0 0.5 1.0 1.5 2.0 2.5 3.0 +25°C +85°C -40°C V+ = 3V ICOM = 100mA 0 0.5 1.0 1.5 2.0 VCOM (V) 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 +85 °C -40 °C +25 °C V+ = 1.8V ICOM = 100mA 0 0.5 1.0 1.5 2.0 2.5 3.0 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 VCOM (V) V+ = 1.8V V+ = 3V ISL84781 |
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