PI3A288
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Ultra-Low-THD Dual-SPDT (0.35Ω) Analog Switch
with Negative Signal Handling Capability
Features
Description
PI3A288 is a dual, single-pole double throw (SPDT)
CMOS switch with negative signal handling capability
at all ports. It can be used as an analog switch or as a
low-delay bus switch. Operating over a wide power
supply voltage ranges from 1.65V to 4.3V, PI3A288
processes a low on-resistance and distortion. The ultra-
low THD performance enables PI3A288 to apply in
high-quality audio applications.
CMOS Technology for Bus and Analog Applications
Negative Signal Handling Capability at all Ports
Low On-Resistance: 0.35Ω at 1.8V Supply
On-Resistance Flatness 0.001Ω
Wide VDD Range: 1.65V to 4.3V
2.0Vrms analog signal range
Programmable soft-start and soft-stop time
-3dB Bandwidth: 255MHz
PI3A288 has also a soft-start and soft-stop feature so as
to minimize signal disruption during channel switching
High Off Isolation: -85dB @ 30kHz
Low THD: 0.0003% from 20Hz to 20kHz, 0.5VRMS
Crosstalk Rejection Reduces Signal Distortion:
-85dB @ 30kHz
Functional Block Diagram
High-impedance mode when VDD not applied
ESD:4kV for HBM mode, 1kV for CDM mode
Extended Industrial Temperature Range: –40°C to
85°C
Packaging (Pb-free & Green): –10-contact UQFN
(ZM10)
Applications
Cell Phones, PDAs, MP3 Players
Portable Instrumentation
Computer Peripherals
Speaker Headset Switching
Power Routing
Pin Description
Pin
1, 3
4
Name
NOX
GND
NCX
COMX
VDD
Description
Data Ports (Normally open)
Ground
2, 10
5, 8
9
Data Ports (Normally closed)
Common Output / Data Ports
Positive Power Supply
Relay Replacement
Audio and Video Signal Routing
PCMCIA Cards
7
IN
Logic Control Pins
6
SSCAP
Slew Rate Control Pin
Modems
Logic Function Table
Logic Input (IN)
Function
0
NC1 Connected to COM1
NC2 Connected to COM2
NO1 Connected to COM1
NO2 Connected to COM2
1
2015-10-0009
PT0541-4
11/03/15
1