ISL84524 Просмотр технического описания (PDF) - Intersil
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ISL84524 Datasheet PDF : 12 Pages
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ISL84524, ISL84525
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 = 25oC, Unless Otherwise Specified
250
200
85oC
150
25oC
100
-40oC
50
VCOM = (V+) - 1V
ICOM = 1mA
0
3 4 5 6 7 8 9 10 11 12 13
V+ (V)
FIGURE 9. ON RESISTANCE vs SUPPLY VOLTAGE
225
200
85oC
175
V+ = 3.3V
ICOM = 1mA
150
25oC
125
100
-40oC
75
140
120
85oC
V+ = 5V
100
25oC
80
-40oC
60
80
70 85oC
25oC
V+ = 12V
60
50
40 -40oC
30
0
2
4
6
8
10
12
VCOM (V)
FIGURE 10. ON RESISTANCE vs SWITCH VOLTAGE
350
VCOM = (V+) - 1V
300
250
200
150
85oC
100
-40oC
50
25oC
0
2 3 4 5 6 7 8 9 10 11 12
V+ (V)
FIGURE 11. TURN - ON TIME vs SUPPLY VOLTAGE
120
110
VCOM = (V+) - 1V
100
90
80
70
60
50
85oC
40
25oC
30 -40oC
20
10
2 3 4 5 6 7 8 9 10 11 12
V+ (V)
FIGURE 12. TURN - OFF TIME vs SUPPLY VOLTAGE
10
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