+1.8V to +5.5V, 2.5Ω, Single SPDT Analog Switch
ISL54503
Features
• ON-resistance (r
)
The Intersil ISL54503 device is a low ON-resistance, low
voltage, bidirectional, single pole/double throw (SPDT)
analog switch designed to operate from a single +1.8V
to +5.5V supply. Targeted applications include battery
powered equipment that benefit from low ON-resistance
ON
- V
- V
- V
= +5.0V. . . . . . . . . . . . . . . . . . . . . 2.5Ω
= +3.0V. . . . . . . . . . . . . . . . . . . . . 4.0Ω
= +1.8V. . . . . . . . . . . . . . . . . . . . . 7.0Ω
CC
CC
CC
(2.5Ω) and fast switching speeds (t
= 25ns,
= 15ns). The digital logic input is 1.8V CMOS
• r
matching between channels . . . . . . . . . . . 3mΩ
flatness (+4.5V Supply) . . . . . . . . . . . . . 0.6Ω
ON
ON
t
OFF
• r
ON
compatible when using a single +3V supply.
• Single supply operation . . . . . . . . +1.8V to +5.5V
• Fast switching action (+4.5V Supply)
- t
- t
Cell phones, for example, often face ASIC functionality
limitations. The number of analog input or GPIO pins
may be limited and digital geometries are not well
suited to analog switch performance. This part may be
used to “mux-in” additional functionality while reducing
ASIC design risk. The ISL54503 is offered in a 6 Ld
1.2mmx1.0mmx0.4mm pitch µTDFN package and a
6 Ld SOT-23 package, alleviating board space
limitations.
. . . . . . . . . . . . . . . . . . . . . . . . . . . 25ns
. . . . . . . . . . . . . . . . . . . . . . . . . . . 15ns
ON
OFF
• Guaranteed break-before-make
• ESD HBM rating. . . . . . . . . . . . . . . . . . . . . . . 6kV
• 1.8V CMOS logic compatible (+3V supply)
• Available in 6 Ld µTDFN and 6 Ld SOT-23 packages
• Pb-free available (RoHS compliant)
The ISL54503 is a committed SPDT that consist of one
normally open (NO) and one normally closed (NC)
switch. This configuration can also be used as a 2-to-1
multiplexer.
Applications
• Battery powered, handheld, and portable equipment
- Cellular/mobile phones
TABLE 1. FEATURES AT A GLANCE
ISL54503
- Pagers
- Laptops, notebooks, palmtops
Number of Switches
SW
1
SPDT or 2-1 MUX
6Ω
• Portable test and measurement
• Medical equipment
• Audio and video switching
1.8V r
ON
1.8V t
/t
ON OFF
65ns/40ns
3Ω
Related Literature
3V r
ON
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
3V t
/t
30ns/20ns
2.5Ω
ON OFF
5V r
ON
5V t
/t
ON OFF
25ns/15ns
6 Ld µTDFN, 6 Ld SOT-23
Package
October 26, 2009
FN6551.2
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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1
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