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PDF PI3A212S Data sheet ( Hoja de datos )
| Número de pieza | PI3A212S | |
| Descripción | Dual SPDT Audio Clickless Analog Switch | |
| Fabricantes | Pericom Semiconductor Corporation | |
| Logotipo |  |
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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
1 page  
www.DataSheet4U.com
PI3A212S
Small Plastic Package, Dual SPDT Audio Clickless
Analog Switch (with Shunt Switches)
Test Circuits and Timing Diagrams
VN NC
or NO
LOGIC
INPUT
IN
GND
VCC
VCC
COM
VOUT
RL CL
50Ω 35pF
Notes:
1. Unused input (NC or NO) must be grounded.
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
Figure 1. AC Test Circuit
Logic VIH
Input VIL
Switch
Output 0V
Off 50% On
VOUT
90%
tON
Off
tOFF
tr < 5ns
tf < 5ns
90%
Logic Input Waveforms inverted for
Switches that have opposite logic
* 1.5V for 3.3V Supply
Figure 2. AC Waveforms
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Figure 3. Break Before Make Interval Timing
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06-0096
5
PS8821B
07/05/06
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet PI3A212S.PDF ] | |
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