Datasheet

MAX9744
BIAS
SYNCOUT
SYNC
V
DD
V
DD
VOLUME
CONTROL
CLASS DCLASS D
MUTE
SHUTDOWN
CONTROL
I
2
C
ANALOG
CONTROL
BIAS
C
BIAS
2.2μF
C
BOOT
0.1μF
C
BOOT
0.1μF
20
23
25
ADDR2 14
ADDR1 13
SCLK 9
SDA/VOL
TO μC
8
SHDN
22
MUTE 24
FBR 18
INR 19
INL 16
FBL 17
4, 5, 29, 30
PVDD
6, 10, 21, 28
V
DD
N.C.
26
OUTR+31, 32
OUTR-
PGNDGND
36, 37
BOOTR-38
BOOTR+33
OSCILLATOR
3V TO 3.6V
(SHOWN IN I
2
C MODE, A
V
= 29.5dB, f
-3dB
= 17Hz, SPREAD-SPECTRUM MODE, MUTE OFF, SLAVE ADDRESS = 1001011_)
4.5V TO 14V
I
2
C MODE
BIAS
34, 35, 39, 43, 44
7, 11, 12,
15, 27
1μF
1μF
PV
DD
R
F
20kΩ
R
F
20kΩ
R
IN
20kΩ
R
IN
20kΩ
C
IN
0.47μF
C
IN
0.47μF
C
BOOT
0.1μF
C
BOOT
0.1μF
OUTL+2, 3
OUTL-41, 42
BOOTL-40
BOOTL+1
100μF
Functional Diagrams/Typical Application Circuits
MAX9744
20W Stereo Class D Speaker Amplifier
with Volume Control
24 ______________________________________________________________________________________