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TDA7265SA Datasheet(PDF) 5 Page - STMicroelectronics

No. de pieza TDA7265SA
Descripción Electrónicos  18W18W STEREO AMPLIFIER WITH MUTE & ST-BY
Download  12 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7265SA Datasheet(HTML) 5 Page - STMicroelectronics

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TDA7265SA
Figure 6. Test and Application Circuit (Stereo Configuration)
4
APPLICATION SUGGESTIONS (DEMO BOARD SCHEMATIC)
The recommended values of the external components are those shown the demoboard schematic different val-
ues can be used, the following table can help the designer
Table 5. .
(*) Closed loop gain has to be
≥25dB
COMPONENT
SUGGESTION
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
Danger of Oscillations
C1, C2
1
µF
Input DC Decoupling
Higher Low Frequency Cutoff
C3
1
µF
St-By/Mute Time
Constant
Larger On/Off Time
Smaller On/Off Time
C4, C6
1000
µF
Supply Voltage Bypass
Danger of Oscillations
C5, C7
0.1
µF
Supply Voltage Bypass
Danger of Oscillations
C8, C9
0.1
µF
Frequency Stability
Dz
5.1V
Mute Circuit
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
+
+
-
-
D94AU087B
RL (L)
RL (R)
+VS
-VS
R9
R5
IN- (L)
8
10
IN- (R)
1
SW1
R1
DZ
R4
SW2
C7
R8
R6
C5
Q1
ST-BY
MUTE


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