AudioMAX™
LX1721 / 1722
Class-D Stereo Power Amplifier Controller
P
RELIMINARY
L I N F I N I T Y D I V I S I O N
B L O C K D I A G R A M
B L O C K D I A G R A M
B L O C K D I A G R A M
B L O C K D I A G R A M
SLEEP
VREF
V25
CN
PVDD
CP
LP+
LN+
LP-
LN-
LFAOUT
LFBK-
LFBK+
VDD
LISN
CLOCK
RPWM
CPWM
LEAOUT
LEAIN
LAMPOUT
LIN-
LIN+
LMUTE
UVLO
&
REFERENCE
OUTPUT
DRIVERS
&
LOGIC
FAULT
TIMER
5V
Reference
26
4
1
10
CLK
OSC
SYNC
+
-
220mV
PVDD
MUX
MUTE
MUTE
7
14
13
9
11
8
6
5
28
27
25
15
17
FEEDBACK AMP
ERROR AMP
CURRENT SENSE
INPUT AMP
16
24
23
22
21
20
S
R
Q
Q
CLK
5V
Reference
24
2.5V
2.5V
F
IGURE
1
– LX1721 / 22 S
IMPLIFIED
B
LOCK
D
IAGRAM
(L
EFT
C
HANNEL
C
IRCUIT
S
HOWN
)
Downloaded From TheatreSystem-Manual.com Manuals
