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LX1721 Datasheet(PDF) 6 Page - Microsemi Corporation

Part # LX1721
Description  Class-D Stereo Power Amplifier Controller
PDF  14 Pages
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Manufacturer  MICROSEMI [Microsemi Corporation]
Direct Link  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

LX1721 Datasheet(HTML) 6 Page - Microsemi Corporation

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Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 6
Copyright
© 2001
Rev. 1.2a,2004-06-10
AudioMAX™
LX1721 / 1722
Class-D Stereo Power Amplifier Controller
PRODUCTION
I N T E GRA T ED
PR ODUC T S
BLOCK DIAGRAM
SLEEP
VREF
V25
CN
PVDD
CP
LP+
LN+
LP-
LN-
LFAOUT
LFBK-
LFBK+
VDD
LISN
CLOCK
RPW M
CPW M
LEAOUT
LEAIN
LAMPOUT
LIN-
LIN+
LMUTE
UVLO
&
REFERENCE
OUTPUT
DRIVERS
&
LOGIC
FAULT
TIMER
5V
Reference
28
10
7
17
CLK
OSC
SYNC
+
-
220m V
PVDD
MUX
MUTE
MUTE
11
5
6
13
4
12
2
3
8
42
41
1
44
FEEDBACK AMP
ERROR AMP
CURRENT SENSE
INPUT AMP
43
27,39
36
37
34
35
S
R
Q
Q
CLK
5V
Reference
40
2.5V
2.5V
FIGURE 1
– LX1721 / 22 SIMPLIFIED BLOCK DIAGRAM (LEFT CHANNEL CIRCUIT SHOWN)



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