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Pericom Semiconductor Corporation - Dual SPDT Audio Clickless Analog Switch

Numéro de référence PI3A212S
Description Dual SPDT Audio Clickless Analog Switch
Fabricant Pericom Semiconductor Corporation 
Logo Pericom Semiconductor Corporation 





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PI3A212S fiche technique
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PI3A212S
Small Plastic Package, Dual SPDT Audio Clickless
Analog Switch (with Shunt Switches)
Features
• CMOS Technology for Bus and Analog Applications
• Low On-Resistance: 0.6Ω @ 2.7V
• Wide VCC Range: 2.7V TO 4.2V ±10%
• Rail-to-Rail Signal Range
• High Off Isolation: -80dB @ 100 kHz
• Crosstalk Rejection Reduces Signal Distortion:
-90dB @ 100 kHz
• Break-Before-Make Switching
• Extended Industrial Temperature Range: –40°C to 85°C
• Packaging: Pb-free & Green, 10-contact TQFN (ZL10)
Applications
• 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 Description
Pin #
Name
2,5 NOX
9
7, 10
3
VCC
NCX
GND
1, 6 COMX
4, 8 INX
Description
Data Port (Normally open)
Positive Power Supply
Data Port (Normally closed)
Ground
Common Output/Data Port
Logic Control
Logic Function Table
Logic Input (INX)
0
1
Function
NCX Connected to COMX
NOX Connected to COMX
Note: x = 1, or 2
Description
Pericom Semiconductor's PI3A212S is a dual high-bandwidth, fast
single-pole double throw (SPDT) CMOS switch. It can be used as
an analog switch or as a low-delay bus switch. Specified over a
wide operating power supply voltage, 2.7V to 4.2V, the PI3A212S
has a low On-Resistance of 0.6Ω @ 2.7V.
Break-before-make switching prevents both switches being en-
abled simultaneously. This eliminates signal disruption during
switching.
The PI3A212S shunt switches connected to ground in order to
dissipate capacitance that builds up on the unconnected NC or
NO line. As a result, reduction of popping and clicking sounds is
achieved when switching between audio sources.
Functional Block Diagram Only
NO2
COM2
SHUNT
SWITCH
NC2
IN2
NO1
COM1
NC1
IN1
Pin Configuration (top view)
IN1
VCC
NC1
76
85
94
10 3
12
NO2
IN2
GND
06-0096
1
PS8821B
07/05/06

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