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TDA2030 Fiches technique(PDF) 7 Page - STMicroelectronics

No de pièce TDA2030
Description  14W Hi-Fi AUDIO AMPLIFIER
Download  12 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA2030 Fiches technique(HTML) 7 Page - STMicroelectronics

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PRACTICAL CONSIDERATIONS
Printed circuit board
The layout shown in Fig. 16 should be adopted by
the designers. If different layouts are used, the
ground points of input 1 and input 2 must be well
decoupled from the ground return of the output in
which a high current flows.
Assembly suggestion
No electrical isolation is needed between the
package and the heatsink with single supply voltage
configuration.
Application suggestions
The recommended values of the components are
those shown on application circuit of fig. 13.
Different values can be used. The following table
can help the designer.
Component
Recomm.
value
Purpose
Larger than
recommended value
Smaller than
recommended value
R1
22 k
Closed loop gain
setting
Increase of gain
Decrease of gain (*)
R2
680
Closed loop gain
setting
Decrease of gain (*)
Increase of gain
R3
22 k
Non inverting input
biasing
Increase of input
impedance
Decrease of input
impedance
R4
1
Frequency stability
Danger of osccilat. at
high frequencies
with induct. loads
R5
≅ 3 R2
Upper frequency
cutoff
Poor high frequencies
attenuation
Danger of
oscillation
C1
1
µF
Input DC
decoupling
Increase of low
frequencies cutoff
C2
22
µF
Inverting DC
decoupling
Increase of low
frequencies cutoff
C3, C4
0.1
µF
Supply voltage
bypass
Danger of
oscillation
C5, C6
100
µF
Supply voltage
bypass
Danger of
oscillation
C7
0.22
µF
Frequency stability
Danger of oscillation
C8
1
2
π B R1
Upper frequency
cutoff
Smaller bandwidth
Larger bandwidth
D1, D2
1N4001
To protect the device against output voltage spikes
(*) Closed loop gain must be higher than 24dB
TDA2030
7/12


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