LX1721 データシートの表示（PDF） - Microsemi Corporation
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LX1721 Datasheet PDF : 14 Pages
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INTEGRATED PRODUCTS
AudioMAX™
LX1721 / 1722
Class-D Stereo Power Amplifier Controller
PRODUCTION
APPLICATION
LISN
Q1
R8
JP1
Vcc 2
PGND 1
Teminal 2
Vcc
PGND
+
C1
1000µF
25V
Vcc
Vcc Vcc
C2
0.1uF/25V
R6
0.020/1W
LISN
5.1/1W
R9
LIN+
LIN-
RIN+
RIN-
SLEEP
_MUTE
5.1/1W
R1 10k
C7 100pF
C9 18pF
R5 34.8k 1%
R2 56.2k 1% C10 150pF
C13 1uF/10V,TANT
C14 0.1uF/25V
C3 0.47uF
LIN+
LIN-
C4 0.47uF
C5 0.47uF
RIN+
RIN-
C6 0.47uF
R4 56.2k 1% C12150pF
C11 18pF
R3 10k
U1
1 LFAOUT
2 CPWM
3
RPWM
4 _LMUTE
5
LEAOUT
6
LEAIN
7 VREF
8
CLOCK
9 GND
10 V25
11
LIN+
12 LIN-
13 LAMPOUT
14
RIN+
15 RIN-
16
RAMPOUT
17 SLEEP
18 STATUS
19 _RMUTE
20 REAIN
21 REAOUT
22 RFAOUT
LX1721-01CDB
LFBK-
LFBK+
Vcc
LFBK- 44
LFBK+ 43
42
LISN
VDD 41
40
CN
39
PVDD
PGND 38
37
LN+
LP+ 36
LP- 35
34
LN-
RN- 33
RP- 32
31
RP+
RN+ 30
29
PGND
CP 28
PVDD 27
NC 26
RISN 25
RFBK+ 24
RFBK- 23
C16
0.1uF/25V
C15
10uF/25V
+
PGND
C17 4.7uF/25V,TANT
Vcc
C18
C19
0.1uF/25V
+47uF/25V
PGND
LN+
LP+
LP-
LN-
RN-
RP-
RP+
RN+
PGND
C20 4.7uF/25V,TANT
C22
0.1uF/25V
C21
47uF/25V
Vcc
RFBK+
RFBK-
R10
5.1/1W
R11
5.1/1W
R12
5.1/1W
R13
5.1/1W
R14
5.1/1W
Q2
Q3
Q4
Q5
Q6
Q7
Vcc Vcc
R7
0.020/1W
RISN
RISN
R15
Q8
5.1/1W
R16
24.3K 1%
LFBK+
C25
220pF
L1
15uH
OUTL+
R20
C29
15/1W
0.68uF/50V
PGND
L2
15uH
R17
24.3K 1%
C30
0.68uF/50V C31
0.47uF/50V
OUTL-
LFBK-
C26
220pF
R18
24.3K 1%
RFBK-
C27
220pF
L3
15uH
OUTR-
R21
C32
15/1W
0.68uF/50V
PGND
L4
15uH
R19
24.3K 1%
C33
0.68uF/50V C34
0.47uF/50V
OUTR+
RFBK+
C28
220pF
GND
PGND
FIGURE 14 – TYPICAL CLASS-D STEREO SWITCHING AMPLIFIER CIRCUIT APPLICATION
Copyright © 2001
Rev. 1.2a,2004-06-10
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 12
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