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PDF PI3A268SC Data sheet ( Hoja de datos )
| Número de pieza | PI3A268SC | |
| Descripción | Dual SPDT | |
| Fabricantes | Pericom Semiconductor Corporation | |
| Logotipo |  |
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PI3A268SC
Dual SPDT Analog Switch with -1.5V Signal Support,
and Integrated Pop-Sound Elimination Circuit
Features
• CMOS Technology for Bus and Analog Applications
• Low On-Resistance: 0.6Ω.
• Wide VDD Range: 2.8 to 4.2
• High Off Isolation: -80dB @ 100kHz
• Crosstalk Rejection Reduces Signal Distortion:
-80dB @ 100kHz
• Input signals can be from -1.5V up to VDD without
distortion.
• Break-Before-Make Switching
• Extended Industrial Temperature Range: –40°C to 85°C
• Packaging (Pb-free & Green):
–10-contact TQFN (ZM10) 1.4 × 1.8
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
Description
Pericom Semiconductor's PI3A268SC is a dual, fast single-pole
double throw (SPDT) CMOS switch. It can be used as an analog
switch or as a low-delay bus switch.
Break-before-make switching prevents both switches being en-
abled simultaneously. This eliminates signal disruption during
switching.
With the use of 3rd party headsets, AC coupling is required to
protect against EOS damage caused by DC offsets. Pericom’s
PI3A268SC can support these AC coupled audio signals, since
the switch can tolerate signals down to -1.5V without a negative
power supply.
Functional Block Diagram
NO2
COM2
NC2
IN2
SHUNT
SWITCH
NO1
COM1
NC1
IN1
Pin Description
Pin #
1, 3
4
Name
NOX
GND
2, 10
5, 8
9
6, 7
NCX
COMX
VDD
INX
Description
Data Port (Normally open)
Ground
Data Port (Normally closed)
Common Output / Data Port
Positive Power Supply
Logic Control
Logic Function Table
Logic Input (INX)
0
1
Note: x = 1 or 2
Function
NCX Connected to COMX
NOX Connected to COMX
09-0058
Pin Configuration (top view)
NO1
NC2
10 9 8
17
26
345
IN1
IN2
1
PS9052
03/26/09
1 page  
www.DataSheet4U.com
PI3A268SC
Dual SPDT Analog Switch with -1.5V Signal Support,
and Integrated Pop-Sound Elimination Circuit
Switch and AC Characteristics
Parameter
Turn-On Time
Turn-Off Time
Break-Before-Make
Delay
Charge Injection
Off-Isolation
Crosstalk
3dB Bandwidth
Symbol
tON
tOFF
tBBM
Q
OIRR
XTALK
f3dB
Test Conditions
VDD = 2.7V, VNO or VNC = 1.5V,
RL = 50Ω, CL = 35pF,
See Test Circuit Figure 1 & 2.
VDD = 2.7V, VNO or VNC = 1.5V,
RL = 50Ω, CL = 35pF,
See Test Circuit Figure 1 & 2.
VDD = 2.7V, VNO or VNC = 1.5V,
RL = 50Ω, CL = 35pF,
See Test Circuit Figure 3.
See Test Circuit Figure 4.
CL = 5pF, RL = 50Ω, f = 100kHz,
VCOM = 1 VRMS,
See Test Circuit Figure 5.
CL = 5pF, RL = 50Ω, f = 100kHz,
VCOM = 1 VRMS,
See Test Circuit Figure 6.
See Test Circuit Figure 9.
Min. Typ. Max. Units
65
65 ns
20
35 pC
-80
dB
-80
130 MHz
Capacitance
Parameter
NC Off Capacitance
NO Off Capacitance
NC On Capacitance
NO On Capacitance
Symbol
CNC (OFF)
CNO (OFF)
CNC (ON)
CNO (ON)
Test Conditions
f = 1MHz, See Test Circuit Figure 7.
f = 1MHz, See Test Circuit Figure 7.
f = 1MHz, See Test Circuit Figure 8.
f = 1MHz, See Test Circuit Figure 8.
Min. Typ. Max. Units
15
15
pF
50
50
09-0058
5
PS9052
03/26/09
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet PI3A268SC.PDF ] | |
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