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ISL43145IV Scheda tecnica(PDF) 11 Page - Intersil Corporation |
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ISL43145IV Scheda tecnica(HTML) 11 Page - Intersil Corporation |
11 / 16 page 11 FN6037.4 August 31, 2015 Crosstalk rejection provided by this family. At 10MHz, OFF isolation is about 50dB in 5 systems, decreasing approximately 20dB per decade as frequency increases. Higher load impedances decrease OFF Isolation and Crosstalk rejection due to the 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 V-. One of these diodes conducts if any analog signal exceeds V+ or V-. Virtually all the analog leakage current comes from the ESD diodes to V+ or V-. 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 V- 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 V- 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 GND. Typical Performance Curves TA = 25°C, Unless Otherwise Specified FIGURE 9. ON RESISTANCE vs POSITIVE SUPPLY VOLTAGE FIGURE 10. ON RESISTANCE vs SWITCH VOLTAGE FIGURE 11. ON RESISTANCE vs SWITCH VOLTAGE FIGURE 12. CHARGE INJECTION vs SWITCH VOLTAGE V+ (V) 2468 10 12 3579 11 13 0 50 100 150 200 25 75 125 V- = 0V -40°C 85°C 25°C 10 15 20 25 30 35 V- = -3V -40°C 85°C 25°C 15 20 25 V- = -5V VCOM = (V+) - 1V ICOM = 1mA -40°C 85°C 25°C 10 15 20 25 30 35 20 30 40 50 60 70 VCOM (V) 0246 8 10 12 1 3579 11 V+ = 3V V+ = 5V 25°C -40°C 85°C 25°C -40°C 85°C V- = 0V V- = 0V ICOM = 1mA 8 10 12 14 16 18 20 -40°C 85°C V+ = 12V V- = 0V 25°C 20 25 30 35 40 45 10 15 20 25 VCOM (V) -4 -2 024 -5 -3 -1 1 3 5 VS =5V VS =3V ICOM = 1mA VS =2V 25°C 85°C 25°C -40°C 85°C -40°C 5 10 15 20 25 30 35 25°C -40°C 85°C VCOM (V) -5 0 5 10 -2.5 2.5 7.5 12.5 -10 -5 0 5 10 15 VS =5V V+ = 5V V+ = 3V V+ = 12V ISL43143, ISL43144, ISL43145 |
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