參數(shù)資料
型號: TDA7498MV
廠商: STMICROELECTRONICS
元件分類: 音頻/視頻放大
英文描述: 100 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO36
封裝: ROHS COMPLIANT, SSOP-36
文件頁數(shù): 10/27頁
文件大小: 779K
代理商: TDA7498MV
Applications information
TDA7498MV
18/27
Doc ID 16505 Rev 2
5
Applications information
5.1
Applications circuit
Figure 18.
Applications circuit
5.2
Mode selection
The three operating modes of the TDA7498MV are set by the two inputs, STBY (pin 20) and
MUTE (pin 21).
Standby mode: all circuits are turned off, very low current consumption.
Mute mode: inputs are connected to ground and the positive and negative PWM
outputs are at 50% duty cycle.
Play mode: the amplifiers are active.
VCC
GND
MUTE
STBY
3V3 POWER SUPPLY
Single-Ended
*
Input
*
Load=6 ohm
For
FREQUENCY SHIFT
OUTPUT
INPUT
*
LC FILTER COMPONENT
Load
L1,L2,
C26
C24,C28
6 ohm
8 ohm
22 uH
470 nF
680 nF
220 nF
C5
100nF
R3
39K
L2
22uH
C1
1uF
C2
1uF
C8
100nF
C25
100nF
C27
330pF
R6
22R
C40
220nF
C41
220nF
C3
1nF
C4
1nF
32
INPB
36 VSS
9
NA
5
NA
7
NA
3
NA
10
OUTNA
12
PVCCA
14
PGNDA
16
OUTPA
33
INNB
8
NA
4
NA
21 MUTE
6
NA
2
NA
29
SVR
11
OUTNA
1
SUB_GND
22
INPA
23
INNA
27
SGND
26
VDDS
28
DIAG
19 VDDPW
18 PGND
20 STBY
24
ROSC
31 GAIN1
35
SVCC
30
GAIN0
25 SYNCLK
17
OUTPA
15
PGNDA
34
VREF
13
PVCCA
IC1
TDA7498MV
R1
100k
R7
22R
C6
100nF
R4
120k
R2
33k
R8
6.8k
C26
680nF
C10
100nF
J6
J5
2
1
3
S1
2
1
3
S2
C9
100nF
C29
2.2uF
2 GND
1
OUT
3
IN
IC2
L4931CZ33
+
C15
2.2uF
16V
1
2
J2
J7
+
C7
2.2uF
16V
+
C23
2200uF
50V
L1
22uH
C17
10uF
10V
C16
10uF
10V
D1
18V
1
2
3
Q1
KTC3875(S)
R9
120K
C30
1uF
R14 47k
R15
8R
C28
220nF
R16
8R
C24
220nF
SYNC
1
2
J1
1
2
J3
R13 68k
J4
DIAG
SGND
VDDS
VCC
SGND
3V3
SGND
VDDS
SGND
FS
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