ISL43120IHZ-T(2007) データシートの表示（PDF） - Intersil
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ISL43120IHZ-T Datasheet PDF : 12 Pages
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ISL43120, ISL43121, ISL43122
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
40
35
30
+85°C
25
20
15
+25°C
-40°C
10
5
3 4 5 6 7 8 9 10 11 12 13
V+ (V)
45
40
35
30
25
20
15
30
25
20
15
10
20
+85°C
15
+85°C
+25°C
-40°C
+25°C
+85°C
+25°C
-40°C
10
5 -40°C
0
2
4
6
8
VCOM (V)
V+ = 3.3V
V+ = 5V
V+ = 12V
10
12
FIGURE 9. ON-RESISTANCE vs SUPPLY VOLTAGE
FIGURE 10. ON-RESISTANCE vs SWITCH VOLTAGE
0.50
0.40
0.30
+25°C
0.20
0.10
+85°C
0
-40°C
0.25
0.20
0.15
+25°C
+85°C
0.10
+85°C
0.05
0
-40°C
0.15
0.10
-40°C
0.05
+85°C
+25°C
0
0
2
4
6
VCOM (V)
V+ = 3.3V
V+ = 5V
V+ = 12V
-40°C
+25°C
8
10
12
FIGURE 11. rON MATCH vs SWITCH VOLTAGE
60
50
40
30
20
10
V+ = 3.3V
0
V+ = 5V
V+ = 12V
-10
-20
0
2
4
6
8
10
12
VCOM (V)
FIGURE 12. CHARGE INJECTION vs SWITCH VOLTAGE
9
FN6033.5
October 18, 2007
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