ISL43L841 Datasheet, PDF (9/12 Pages) Intersil Corporation – Ultra Low ON-Resistance, Low-Voltage, Single Supply, Differential 4 to 1 Analog Multiplexer

ISL43L841
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 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 T_A = 25°C, Unless Otherwise Specified
0.75
V+ = 1.65V
0.7
I_COM = 100mA
0.6
0.55
V+ = 4.3V
I_COM = 100mA
0.65
0.6
V+ = 1.8V
0.55
0.5
V+ = 2.7V
0.5
85°C
0.45
25°C
0.4
V+ = 3V
0.45
V+ = 3.6V
V+ = 4.3V
0.4
0
1
2
3
4
5
V_COM (V)
FIGURE 9. ON RESISTANCE vs SUPPLY VOLTAGE vs
SWITCH VOLTAGE
0.35
-40°C
0.3
0
1
2
3
4
5
V_COM (V)
FIGURE 10. ON RESISTANCE vs SWITCH VOLTAGE
0.65
V+ = 3V
I_COM = 100mA
0.6
0.55
85°C
0.5
0.45
25°C
0.4
-40°C
0.35
0
0.5
1
1.5
2
2.5
3
V_COM (V)
FIGURE 11. ON RESISTANCE vs SWITCH VOLTAGE
0.75
V+ = 1.8V
I_COM = 100mA
0.7
0.65
85°C
0.6
0.55
25°C
0.5
0.45
-40°C
0.4
0
0.5
1
1.5
2
V_COM (V)
FIGURE 12. ON RESISTANCE vs SWITCH VOLTAGE
9
FN6212.1
June 30, 2006