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TDA2050 Folha de dados(PDF) 7 Page - STMicroelectronics

Nome de Peças TDA2050
Descrição Electrónicos  32 W hi-fi audio power amplifier
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA2050 Folha de dados(HTML) 7 Page - STMicroelectronics

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TDA2050
Single-supply application suggestions
Doc ID 1461 Rev 3
7/18
3
Single-supply application suggestions
The recommended values of the external components are those shown in the application
circuit of Figure 6. Different values can be used. The following table can help the designer.
Table 6.
Recommonded values
Note:
If the supply voltage is lower than 40 V and the load is 8 ohm (or more), a lower value of C2
can be used (i.e. 22 mF). C7 can be larger than 1000 µF only if the supply voltage does not
exceed 40 V.
Component
Recommended
value
Purpose
Larger than
recommended value
Smaller than
recommended value
R1, R2, R3
22 k
Ω
Biasing resistor
R4
680
Ω
Feedback resistor
Increase of gain
Decrease of gain(1)
1.
The gain must be higher than 24 dB
R5
22 k
Ω
Decrease of gain(1)
Increase of gain
R6
2.2
Ω
Frequency stability
Danger of oscillations
C1
2.2 µF
Input decoupling DC
Higher low-frequency cutoff
C2
100 µF
Supply voltage rejection
Worse turn-off transient
Worse turn-on delay
C3
1000 µF
Supply voltage bypass
Danger of oscillations
Worse turn-off transient
C4
22 µF
Inverting input DC
decoupling
Increase of switching
ON/OFF
Higher low-frequency cutoff
C5
100 nF
Supply voltage bypass
Danger of oscillations
C6
0.47 µF
Frequency stability
Danger of oscillations
C7
1000 µF
Output DC decoupling
Higher low-frequency cutoff


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