PI3A268C Datasheet, PDF (1/9 Pages) Pericom Semiconductor Corporation – Low-Voltage Dual-SPDT Analog Switch with Negative Swing Audio Capability

PI3A268C
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Low-Voltage Dual-SPDT (0.5Ω) Analog Switch
with Negative Swing Audio Capability
Features
• Negative Signal Handling Capability at all Ports
• Low On-Resistance: 0.5Ω at 3.0V Supply
• 0.25Ω Maximum R_ON Flatness for 3.0V Supply
• -3dB Bandwidth: 85MHz
• Low-ICCT Current Over an Expanded Control Input
Range
• Wide VDD Range: 1.65V to 4.3V
• Power-off Protection on Common Ports
• Rail-to-Rail Signal Range
• High Off Isolation: -80dB @ 100kHz
• Crosstalk Rejection Reduces Signal Distortion:
-80dB @ 100kHz
• Extended Industrial Temperature Range: –40°C to
85°C
• Packaging (Pb-free & Green):
–10-contact UQFN (ZM10)
Description
PI3A268C is a dual, fast 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,
PI3A268C processes a low on-resistance and distortion.
Break-before-make switching prevents both switches
being enabled simultaneously. This eliminates signal
disruption during switching.
PI3A268C dissipates a very low supply current even
when the control voltage is lower than supply. This
feature suits mobile handset applications by allowing
direct interface with the general-purpose I/Os of
baseband processors with minimal battery consumption.
Application
• Cell Phones, PDAs, MP3 Players
• Portable Instrumentation
• Computer Peripherals
• Speaker Headset Switching
• Power Routing
• Relay Replacement
• Audio and Video Signal Routing
• PCMCIA Cards
• Modems
Pin Assignment
NC1 V_DD COM1
10 9
8
NO1 ₁
7 IN1
NC2 ²
6 IN2
3
4
5
NO2 GND COM2
UQFN-10 čTOP VIEWĎ
Functional Block Diagram
C OM1
IN1
C OM2
IN2
NC1
NO1
NC2
NO2
PT0375-2
04/12/11
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