PI5A100QE Pericom Semiconductor, PI5A100QE Datasheet - Page 10
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PI5A100QE
Manufacturer Part Number
PI5A100QE
Description
IC SWITCH QUAD SPDT 16QSOP
Manufacturer
Pericom Semiconductor
Datasheet
1.PI5A100WE.pdf
(12 pages)
Specifications of PI5A100QE
Function
Switch
Circuit
4 x SPDT
On-state Resistance
10 Ohm
Voltage Supply Source
Single Supply
Voltage - Supply, Single/dual (±)
2 V ~ 6 V
Current - Supply
1µA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-QSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PI5A100QEX
Manufacturer:
DALLAS
Quantity:
62
Part Number:
PI5A100QEX
Manufacturer:
PERICOM
Quantity:
20 000
Applications
Audio Muting Function
Figure 8 shows the PI5A100 in an audio card muting application.
The original problem was one of excessive popping/clicking noise
appearing when connecting disconnecting external loads, and at
power on/off. The PI5A100 performs a muting function by grounding
the outputs at power on/off and during the transition time. The
32Ω headset impedance demands a very low and very flat switch-
on resistance to reduce THD and signal loss.
Figure 10: The PI5A100 momentarily mutes the stereo outputs by connecting them to ground during transition times.
Stereo Audio
From DAC
Input
Enable
Select
J1
2.5V
2.5V
Z3
Z4
-3V
22k!
Precision, Wide-Bandwidth, Quad SPDT Analog Switch
GND
10
Vcc
Paralleling two sections of the PI5A100 produces a Ron of 2.5Ω
with an unsurpassed ±0.5Ω flatness.
To handle AC signals it was necessary to power the device with
±3V provided by two Zener diodes: Z1 and Z2. The select and
Enable control signals are shifted by using twpo 2.5V Zener diodes
Z3,Z4 and pull down resistors connected to -3V.
Z1
Z1/Z2 - Dual SMT 3.0V Zener
-3V
Stereo Audio
Z2
Output
J2
-5V
+5V
10kΩ
32!
PS7012H
PI5A100
08/30/04