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TDA7265 Datasheet(PDF) 8 Page - STMicroelectronics

Part # TDA7265
Description  25 25W STEREO AMPLIFIER WITH MUTE & ST-BY
PDF  11 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7265 Datasheet(HTML) 8 Page - STMicroelectronics

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COMPONENTS
RECOMMENDED
VALUE
PURPOSE
LARGER THAN
RECOMMENDED VALUE
SMALLER THAN
RECOMMENDED VALUE
R1
10K
Ω
Mute Circuit
Increase of Dz
Biasing Current
R2
15K
Ω
Mute Circuit
Vpin # 5 Shifted Downward
Vpin # 5 Shifted Upward
R3
18K
Ω
Mute Circuit
Vpin # 5 Shifted Upward
Vpin # 5 Shifted Downward
R4
15K
Ω
Mute Circuit
Vpin # 5 Shifted Upward
Vpin # 5 Shifted Downward
R5, R8
18K
Ω
Closed Loop Gain
Setting (*)
Increase of Gain
R6, R9
560
Ω
Decrease of Gain
R7, R10
4.7
Ω
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
Q1
BC107
Mute Circuit
(*) Closed loop gain has to be => 25dB
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.
MUTE, STAND-BY TRUTH TABLE
SW1
SW2
B
A
STAND-BY
B
B
STAND-BY
A
A
MUTE
A
B
PLAY
TDA7265
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