ISL43110IBZ Intersil, ISL43110IBZ Datasheet - Page 8

• Manufacturer Part Number: ISL43110IBZ
• Description: IC SWITCH SPST 8SOIC
• Manufacturer: Intersil
• Type: Analog Switchr

Specifications of ISL43110IBZ

• Function: Switch
• Circuit: 1 x SPST- NO
• On-state Resistance: 20 Ohm
• Voltage Supply Source: Single Supply
• Voltage - Supply, Single/dual (±): 2.4 V ~ 12 V
• Current - Supply: 1µA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Package: 8SOIC N
• Maximum On Resistance: 30@3V Ohm
• Maximum High Level Output Current: 20 mA
• Maximum Turn-off Time: 60@3.6V ns
• Maximum Turn-on Time: 100@3.6V ns
• Switch Architecture: SPST
• Power Supply Type: Single
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

This family of switches cannot be operated with bipolar
supplies, because the input switching point becomes
negative in this configuration. For a ±5V single SPST switch,
see the ISL43112/13 data sheet.
Logic-Level Thresholds
This switch family is TTL compatible (0.8V and 2.4V) over a
supply range of 3V to 11V, and the full temperature range
(see Figure 10). At 12V the low temperature V
about 2.5V. This is still below the TTL guaranteed high
output minimum level of 2.8V, but noise margin is reduced.
For best results with a 12V supply, use a logic family the
provides a V
The digital input stages draw supply current whenever the
digital input voltage is not at one of the supply rails. Driving
the digital input signals from GND to V+ with a fast transition
time minimizes power dissipation.
High-Frequency Performance
In 50Ω systems, signal response is reasonably flat to
20MHz, with a -3dB bandwidth exceeding 200MHz (see
Figure 15). Figure 15 also illustrates that the frequency
response is very consistent over a wide V+ range, and for
varying analog signal levels.
An OFF switch acts like a capacitor and passes higher
frequencies with less attenuation, resulting in signal
feedthrough from a switch’s input to its output. Off Isolation is
Typical Performance Curves
25
20
15
10
5
0
FIGURE 7. ON RESISTANCE vs SUPPLY VOLTAGE
3
-40°C
4
OH
greater than 3V.
85°C
5
25°C
6
7
8
V+ (V)
8
9
T
10
A
V
I
= 25°C, Unless Otherwise Specified
COM
COM
IH
11
= 1mA
level is
= (V+) - 1V
ISL43110, ISL43111
12
13
the resistance to this feedthrough. Figure 16 details the high
Off Isolation provided by this family. At 10MHz, off isolation is
about 50dB in 50Ω systems, decreasing approximately 20dB
per decade as frequency increases. Higher load
impedances decrease Off Isolation 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.
20
16
12
15
13
11
9
7
5
9
7
5
3
8
FIGURE 8. ON RESISTANCE vs SWITCH VOLTAGE
0
-40°C
85°C
2
25°C
25°C
-40°C
85°C
4
V
-40°C
85°C
25°C
COM
I
COM
6
(V)
= 1mA
8
10
V+ = 3.3V
V+ = 12V
April 12, 2005
V+ = 5V
FN6028.3
12