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APA2178 Datasheet(PDF) 21 Page - Anpec Electronics Coropration

Part # APA2178
Description  100mW Stereo Cap-Free Headphone Driver
PDF  30 Pages
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Manufacturer  ANPEC [Anpec Electronics Coropration]
Direct Link  http://www.anpec.com.tw
Logo ANPEC - Anpec Electronics Coropration

APA2178 Datasheet(HTML) 21 Page - Anpec Electronics Coropration

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Copyright
© ANPEC Electronics Corp.
Rev. A.3 - Jul., 2009
www.anpec.com.tw
21
APA2178
PIN
NO.
MANE
I/O/P
FUNCTION
A1
RIN
I
Right channel audio signal input pin.
A2
GND
P
Ground connection for circuitry.
A3
PVDD
P
Charge pump power supply voltage input pin.
A4
CP+
I/O
Charge pump flying capacitor positive connection.
B1
RSD
I
Right channel shutdown mode control pin. A low-level voltage applied on this
pin shuts off the right channel headphone driver.
B2
LSD
I
Left channel shutdown mode control pin. A low-level voltage applied on this
pin shuts off the left channel headphone driver.
B3,C3
NC
-
No Connection.
B4
PGND
P
Charge pump ground.
C1
LIN
I
Left channel audio signal input pin.
C2
ROUT
O
Right channel output for headphone.
C4
CP-
I/O
Charge pump flying capacitor negative connection.
D1
VDD
P
Supply voltage input pin.
D2
LOUT
O
Left channel output for headphone.
D3
VSS
P
Connect this pin to CVSS.
D4
CVSS
O
Charge pump output.
Block Diagram
Pin Description
Shutdown
Circuit
Power and
Depop Circuit
ROUT
RIN
RSD
Charge
Pump
LIN
LOUT
GND
VDD
CP+
CP-
CVSS
VSS
PGND
PVDD
LSD
GND



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