廬
ISL54047
Data Sheet
May 31, 2007
FN6503.0
Ultra Low ON-Resistance, High Off-
Isolation, Single Supply, Diff SPST Analog
Switch
The Intersil ISL54047 device is a low ON-resistance, low
voltage, high off-isolation, bidirectional, differential single-
pole/single-throw (SPST) analog switch. It was designed to
operate from a single +1.65V to +4.5V supply. Targeted
applications include battery powered equipment that benefit
from low R
ON
(0.44惟) and fast switching speeds (t
ON
= 40ns,
t
OFF
= 35ns). The digital logic input is 1.8V logic-compatible
when using a single +3V supply.
The ISL54047 has been designed with a T-switch
architecture. This approach results in maximum off-isolation
while retaining a low impedance signal path when switches
are ON.
The device can be used as a low impedance bypass element
for noisy amplifier circuits.
The ISL54047 has two normally open (NO) SPST switches
that are controlled by a single logic control pin.
TABLE 1. FEATURES AT A GLANCE
ISL54047
Number of Switches
SW
4.3V R
ON
4.3V t
ON
/t
OFF
3V R
ON
3V t
ON
/t
OFF
1.8V R
ON
1.8V t
ON
/t
OFF
Package
2
SPST
0.44惟
40ns/35ns
0.51惟
50ns/40ns
0.98惟
70ns/65ns
10 Ld 1.8 x 1.4 x 0.5
mm
渭
TQFN
Features
鈥?T-Switch Architecture
鈥?OFF-Isolation at 100kHz
- Into 50惟 Load . . . . . . . . . . . . . . . . . . . . . . . . . . . 102dB
- Into 8惟 Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118dB
鈥?ON Resistance (R
ON
)
- V+ = +4.3V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.44惟
- V+ = +3.0V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.51惟
- V+ = +1.8V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.98惟
鈥?R
ON
Matching Between Channels . . . . . . . . . . . . . . . . 0.04惟
鈥?R
ON
Flatness Across Signal Range . . . . . . . . . . . . . . . 0.07惟
鈥?Single Supply Operation . . . . . . . . . . . . . . . +1.65V to +4.5V
鈥?Low Power Consumption (P
D
). . . . . . . . . . . . . . . <0.45
渭
W
鈥?Fast Switching Action (V+ = +4.3V)
- t
ON
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40ns
- t
OFF
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35ns
鈥?ESD HBM Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>8kV
鈥?1.8V Logic Compatible (+3V supply)
鈥?Low ICC Current when VinH is not at the V+ Raill
鈥?Available in 10 lead
1.8 x 1.4 x 0.5
mm
渭
TQFN
鈥?Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
鈥?Battery powered, Handheld, and Portable Equipment
- Cellular/mobile Phones
- Pagers
- Laptops, Notebooks, Palmtops
鈥?Portable Test and Measurement
鈥?Medical Equipment
鈥?Audio and Video Switching
Related Literature
鈥?Technical Brief TB363 鈥淕uidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)鈥?/div>
鈥?Application Note AN557 鈥淩ecommended Test Procedures
for Analog Switches鈥?/div>
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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