max9770euit Maxim Integrated Products, Inc., max9770euit Datasheet - Page 19

• Manufacturer Part Number: max9770euit
• Description: 1.2w Low-emi, Filterless, Mono Class D Amplifier With Stereo Directdrive Headphone Amplifiers
• Manufacturer: Maxim Integrated Products, Inc.

1.2W, Low-EMI, Filterless, Mono Class D Amplifier
RIGHT-CHANNEL
RIGHT-CHANNEL
with Stereo DirectDrive Headphone Amplifiers
LEFT-CHANNEL
LEFT-CHANNEL
AUDIO INPUT 1
AUDIO INPUT 2
AUDIO INPUT 2
AUDIO INPUT 1
AUDIO INPUT
MONO
______________________________________________________________________________________
V
DD
1μF
0.47μF
0.47μF
0.47μF
0.47μF
V
1μF
( ) FOR TSSOP PIN.
C
HPS
GND
GND
C
C
C
C
V
V
V
DD
1μF
IN
IN
IN
IN
IN
DD
DD
DD
C1
CPGND
MONO
CPV
GAIN2
GAIN1
SHDN
SYNC
SELM
IN1R
IN2R
SEL1
SEL2
IN2L
IN1L
C1P
C1N
DD
25
(28)
28
(3)
24
(27)
21
(24)
22
(25)
14
(17)
12
(15)
13
(16)
15
(18)
7
(10)
10
(13)
9
(12)
11
(14)
16
(19)
23
(26)
27
(2)
GAIN CONTROL
CPV
HEADPHONE
SHUTDOWN
OSCILLATOR
DETECTION
MUX/GAIN
MUX AND
CONTROL
CONTROL
(11)
MIXER/
CHARGE
PUMP
SS
8
(8)
5
C2
1μF
SV
SS
OSC/2
1μF
MODULATOR
CLASS D
2.5V TO 5.5V
MAX9770
(5)
(1)
26
2
V
GND
DD
V
DD
H-BRIDGE
(23)
(21)
(22)
(20) PGND
(4) BIAS
(9)
(7)
(6)
20
18
19
17
1
6
4
3
PV
OUT+
OUT-
HPS
HPOUTL
HPOUTR
DD
Block Diagrams
0.1μF
C
0.047μF
BIAS
2.5V TO 5.5V
19