max9758etjt Maxim Integrated Products, Inc., max9758etjt Datasheet - Page 24

• Manufacturer Part Number: max9758etjt
• Description: 2.3w Stereo Speaker Amplifiers And Directdrive Headphone Amplifiers With Automatic Level Control
• Manufacturer: Maxim Integrated Products, Inc.

2.3W Stereo Speaker Amplifiers and DirectDrive
Headphone Amplifiers with Automatic Level Control
24
FIGURE SHOWN WITH AN ATTACK TIME = 495µs, RELEASE TIME = 990ms AND AN OUTPUT POWER LIMIT SET TO 1.2W, SPKR GAIN = 25.5dB, LDO SHOWN IN FIXED OUTPUT MODE, HPGAIN = 3dB.
______________________________________________________________________________________
0.033µF
3V TO 5.5V
C
LEFT-CHANNEL
BIAS
1µF
1µF
AUDIO INPUT
0.47µF
AUDIO INPUT
V
V
DD
DD
CHANNEL
C3, C4
180kΩ
RIGHT-
1µF
1µF
1µF
C1
47kΩ
C1
HPV
R
0V TO
B
DD
1µF
C
1µF
C
IN
CPGND
REGEN 24
CPV
CPV
IN
GAIN1
GAIN3
GAIN2
SHDN
PREF 29
BEEP
BIAS
VOL
C1P
C1N
V
INL
INR
DR 25
CT 35
DD
SS
SS
IN 33
26
28
2
3
4
27
5
10
11
13
12
14
15
1
36
MAX9756
HEADPHONE
SHUTDOWN
DETECTION
DETECTION
AND GAIN
CONTROL
CONTROL
VOLUME
0.1µF
CONTROL
VOLUME
VOLUME
BEEP
CHARGE
DETECT
PUMP
GAIN/
PEAK
GAIN/
4.5V TO 5.5V
32
V
31
DD
GND
100µF
LDO
6, 22
PGND
4.5V TO 5.5V
9, 19
AMPLIFIER
AMPLIFIER
PV
BTL
BTL
DD
0.1µF
21
20
23
17
16
34 OUT
30 SET
18
7
8
MAX9756 Block Diagram
OUTL+
OUTL-
OUTR+
OUTR-
HPR
HPV
HPS
HPL
DD
1µF
4.65V OUTPUT TO CODEC
1µF
3V TO 5.5V
1µF