ISL84582 Просмотр технического описания (PDF) - Renesas Electronics
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ISL84582 Datasheet PDF : 14 Pages
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ISL84582
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.
70
60
V- = -5V
VCOM = (V+) - 1V
ICOM = 1mA
50
+85°C
40
+25°C
30
-40°C
20
400
V- = 0V
300
200
+85°C +25°C
100
-40°C
0
2345
678
V+ (V)
9 10 11 12
120
110
100
ICOM = 1mA
90
80
70
60
50
90
80
70
+85°C
60
50
+25°C
40
-40°C
30
60
50 +25°C
+85°C
40
30 -40°C
20-5 -4 -3 -2 -1
0
1
VCOM (V)
+85°C VS = ±2V
+25°C
-40°C
VS = ±3V
VS = ±5V
2345
FIGURE 9. ON-RESISTANCE vs SUPPLY VOLTAGE
FIGURE 10. ON-RESISTANCE vs SWITCH VOLTAGE
225
200
ICOM = 1mA
175
150
+85°C
125
100
75
160
140
120
100
80
60
100
90
80
70 +25°C
60
50
40 0
+85°C
1
+25°C
-40°C
V+ = 2.7V
V- = 0V
+85°C
+25°C
-40°C
V+ = 3.3V
V- = 0V
V+ = 5V V- = 0V
2
3
VCOM (V)
-40°C
4
5
FIGURE 11. ON-RESISTANCE vs SWITCH VOLTAGE
60
55
ICOM = 1mA
V+ = 12V
50
V- = 0V
45
+85°C
40
35
30
+25°C
25
-40°C
20
0
2
4
6
8
10
12
VCOM (V)
FIGURE 12. ON-RESISTANCE vs SWITCH VOLTAGE
FN6213 Rev 3.00
May 6, 2009
Page 11 of 14
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