MAX9758 Maxim Integrated Products, MAX9758 Datasheet - Page 26

• Manufacturer Part Number: MAX9758
• Description: 2.3W Stereo Speaker Amplifiers and DirectDrive Headphone Amplifiers
• Manufacturer: Maxim Integrated Products

2.3W Stereo Speaker Amplifiers and DirectDrive
Headphone Amplifiers with Automatic Level Control
26
______________________________________________________________________________________
3V TO 5.5V
RIGHT-CHANNEL
C
LEFT-CHANNEL
1μF
BIAS
1μF
AUDIO INPUT
AUDIO INPUT
0.47μF
V
FIGURE SHOWN WITH SPKR GAIN = 25.5dB, LDO SHOWN IN ADJUSTABLE OUTPUT MODE SET TO 3.3V, HP GAIN = 3dB.
DD
V
DD
1μF
1μF
C1
C2
HPV
R
0V TO
B
DD
1μF
1μF
C
C
IN
IN
CPGND
CPV
REGEN 23
CPV
GAIN1
GAIN3
GAIN2
SHDN
BEEP
BIAS
VOL
C1P
C1N
V
INR
INL
DD
SS
SS
31
24
26
1
2
3
25
4
9
10
12
11
13
14
32
MAX9758
HEADPHONE
SHUTDOWN
DETECTION
DETECTION
AND GAIN
CONTROL
CONTROL
VOLUME
0.1μF
VOLUME
VOLUME
BEEP
CHARGE
PUMP
4.5V TO 5.5V
29
V
28
DD
GND
100μF
LDO
5, 21
PGND
4.5V TO 5.5V
8, 18
AMPLIFIER
AMPLIFIER
PV
BTL
BTL
DD
0.1μF
22
30 OUT
20
19
15
16
27 SET
17
6
7
OUTL+
OUTL-
OUTR+
OUTR-
HPR
HPV
HPS
HPL
MAX9758 Block Diagram
DD
10pF
1μF
47kΩ
82kΩ
3V TO 5.5V
3.3V OUTPUT TO CODEC
1μF
1μF
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