MAX9721 查看數據表（PDF） - Maxim Integrated
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MAX9721 Datasheet PDF : 14 Pages
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1V, Fixed-Gain, DirectDrive, Stereo Headphone
Amplifier with Shutdown
Functional Diagram
0.9V TO 1.8V
C3
1µF
9
(C2)
VDD
12
(B2)
SHDN
LEFT
CHANNEL
AUDIO IN
CIN
0.47µF
3
(A3)
INL
RIN
25kΩ
RF*
VDD
10
(C1) C1P
C1
1µF
1
(A1) C1N
CHARGE
PUMP
UVLO/
SHUTDOWN
CONTROL
MAX9721
SGND
VSS
CLICK-AND-POP
SUPPRESSION
VDD
SGND
RIN
25kΩ
PVSS
2
(A2)
C2
1µF
*MAX9721A = 50kΩ.
MAX9721B = 37.5kΩ.
MAX9721C = 25kΩ.
( ) DENOTE BUMPS FOR UCSP.
VSS PGND
5 11
(B4) (B1)
SGND
INR
6
4
(B3)
(A4)
CIN
0.47µF
RIGHT
CHANNEL
AUDIO IN
VSS
RF*
8
OUTL (C3)
7
OUTR (C4)
HEADPHONE
JACK
12 ______________________________________________________________________________________
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