MAX9725 Maxim Integrated Products, MAX9725 Datasheet - Page 12

• Manufacturer Part Number: MAX9725
• Description: Stereo Headphone Amplifier
• Manufacturer: Maxim Integrated Products

1V, Low-Power, DirectDrive, Stereo Headphone
Amplifier with Shutdown
12
______________________________________________________________________________________
1µF
C1
*MAX9725A = 50kΩ.
MAX9725B = 37.5kΩ.
MAX9725C = 25kΩ.
MAX9725D = 100kΩ.
( ) DENOTE BUMPS FOR UCSP.
(C1)
(A1)
10
1µF
1
C3
C1P
C1N
1µF
0.9V TO 1.8V
PV
C2
(A2)
(C2)
V
CHARGE
DD
SS
PUMP
2
9
V
5
(B4)
SS
PGND
11
(B1)
SHDN
SHUTDOWN
(B2)
MAX9725
CONTROL
12
UVLO/
SGND
6
(B3)
0.47µF
C
(A3)
IN
CHANNEL
CHANNEL
AUDIO IN
AUDIO IN
INL
RIGHT-
LEFT-
3
INR
4
(A4)
C
0.47µF
25kΩ
IN
25kΩ
R
R
IN
IN
SGND
SGND
CLICK-AND-POP
SUPPRESSION
V
V
V
V
DD
DD
SS
SS
R
R
F
F
*
*
OUTR
OUTL
Functional Diagram
8
(C3)
7
(C4)
HEADPHONE
JACK