ISL54066
®
Data Sheet
November 3, 2009
FN6584.1
Negative Signal Swing, High Off-Isolation,
Dual SPST Single Supply Switch
Features
• Pb-free (RoHS Compliant)
The Intersil ISL54066 device is a low ON-resistance, high
off-isolation, low voltage, dual single-pole/single-throw (SPST)
analog switch. It was designed to operate from a single +1.8V
to +6.5V supply and can pass signals that swing down to 6.5V
below the positive supply rail. Targeted applications include
• Negative Signal Swing (Max 6.5V Below V+)
• T-switch Architecture
• ON-Resistance (r
)
ON
- V+ = +4.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Ω
- V+ = +4.3V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Ω
- V+ = +2.7V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5Ω
- V+ = +1.8V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Ω
battery powered equipment that benefit from low r
(1Ω),
ON
high off-isolation (80dB) and fast switching speeds
(t = 40ns, t = 30ns). The digital logic input is 1.8V
ON OFF
logic-compatible when using a single +3V supply.
• r
• r
Matching Between Channels . . . . . . . . . . . . . . . . . 10mΩ
Flatness Across Signal Range . . . . . . . . . . . . . . . . . 0.2Ω
ON
ON
The ISL54066 incorporates a T-switch architecture. This
approach results in excellent signal off-isolation while
retaining a low impedance signal path when switches are ON.
The ISL54066 is offered in small form factor packages,
alleviating board space limitations. The ISL54066 is available
in 10Ld µTQFN and TDFN packages.
• Single Supply Operation . . . . . . . . . . . . . . . . .+1.8V to +6.5V
• Low Power Consumption @ 3V (P ). . . . . . . . . . . . 60nW
D
• Fast Switching Action (V+ = +4.3V)
- t
- t
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40ns
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30ns
ON
OFF
The ISL54066 is a dual single-pole/single-throw (SPST)
normally open (NO) switch with independent logic control.
• ESD HBM Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>6kV
• 1.8V Logic Compatible (+3V Supply)
TABLE 1. FEATURES AT A GLANCE
ISL54066
Number of Switches
Switch Type
2
• Low I+ Current when VinH is not at the V+ Rail
• Available in 10 Ld µTQFN and 10 Ld 3x3 TDFN
SPST NO
4.3V r
1Ω
40ns/30ns
ON
Applications
4.3V t /t
ON OFF
2.7V r
1.5Ω
ON
2.7V t /t
• Battery powered, Handheld, and Portable Equipment
- Cellular/mobile Phones
60ns/30ns
ON OFF
1.8V r
3Ω
- Pagers
ON
1.8V t /t
180ns/44ns
10 Ld µTQFN, 10 Ld TDFN
- Laptops, Notebooks, Palmtops
ON OFF
Packages
• Portable Test and Measurement
• Medical Equipment
ON-RESISTANCE vs SUPPLY VOLTAGE vs
SWITCH VOLTAGE
• Audio and Video Switching
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
I
= 100mA
COM
V+ = 1.8V
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
• Application Note AN557 “Recommended Test Procedures
for Analog Switches”
V+ = 2.7V
V+ = 4.5V
-6 -5 -4 -3 -2 -1
0
1
2
3
4
5
V
(V)
COM
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1
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