參數(shù)資料
型號: TDA7269
廠商: STMICROELECTRONICS
元件分類: 音頻/視頻放大
英文描述: 10 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM11
封裝: MULTIWATT-11
文件頁數(shù): 5/7頁
文件大?。?/td> 64K
代理商: TDA7269
Obsolete
Product(s)
- Obsolete
Product(s)
APPLICATIONS SUGGESTION
(Demo Board Schematic)
The recommended values of the external compo-
nents are those shown are the demo board sche-
matic different values can be used: the following
table can help the designer.
R3
IN (L)
C1
R2
C3
MUTE/
ST-BY
GND
IN (R)
C2
R7
R10
C8
C9
OUT (L)
OUT (R)
C6
C4
+VS
3
5
7
9
6
11
2
4
+
-
D94AU087
RL (L)
RL (R)
+VS
-VS
R9
R5
IN- (L)
8
10
IN- (R)
1
SW1
R1
DZ
R4
SW2
C7
R8
R6
C5
Figure 3: Test and Application Circuit (Stereo Configuration)
COMPONENTS
RECOMMENDED
VALUE
PURPOSE
LARGER THAN
RECOMMENDED VALUE
SMALLER THAN
RECOMMENDED VALUE
R1
10K
Mute Circuit
Increase of Dz
Biasing Current
R2
15K
Mute Circuit
Vpin # 5 Shifted Downward
Vpin # 5 Shifted Upward
R3
18K
Mute Circuit
Vpin # 5 Shifted Upward
Vpin # 5 Shifted Downward
R4
15K
Mute Circuit
Vpin # 5 Shifted Upward
Vpin # 5 Shifted Downward
R5, R8
18K
Closed Loop Gain
Setting (*)
Increase of Gain
R6, R9
560
Decrease of Gain
R7, R10
4.7
Frequency Stability
Danger of Oscillations
C1, C2
1
F
Input DC
Decoupling
Higher Low Frequency
Cutoff
C3
1
F
St-By/Mute Time
Constant
Larger On/Off Time
Smaller On/Off Time
C4, C6
1000
F
Supply Voltage
Bypass
Danger of Oscillations
C5, C7
0.1
F
Supply Voltage
Bypass
Danger of Oscillations
C8, C9
0.1
F
Frequency Stability
Dz
5.1V
Mute Circuit
(*) Closed loop gain has to be => 25dB
TDA7269
5/7
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