TDA2006 Datasheet, PDF (8/12 Pages) STMicroelectronics – 12W AUDIO AMPLIFIER

TDA2006
Figure 17 : Bridge Amplifier Configuration with Split Power Supply (PO = 24W, VS = ± 12V)
PRACTICAL CONSIDERATIONS
Printed Circuit Board
The layout shown in Figure 14 should be adopted
by the designers. If different layout are used, the
ground points of input 1 and input 2 must be well
decoupled from ground of the output on which a
rather high current flows.
Assembly Suggestion
No electrical isolation is needed between the pack-
age and the heat-sink with single supply voltage
configuration.
Application Suggestion
The recommended values of the components are
the ones shown on application circuits of Figure 13.
Different values can be used. The table 1 can help
the designers.
Table 1
Component
R1
R₂
R₃
R₄
R5
C₁
Recommanded
Value
22 kΩ
680 Ω
22 kΩ
1Ω
Purpo se
Closed Loop Gain Setting
Closed Loop Gain Setting
Non Inverting Input
Biasing
Frequency Stability
3 R2
2.2 µF
Upper Frequency Cut-off
Input DC Decoupling
Larger Than
Recommanded Value
Increase of Gain
Decrease of Gain (*)
Increase of Input
Impedance
Danger of Oscillation at
High Frequencies with
Inductive Loads
Poor High Frequencies
Attenuation
C₂
22 µF
Inverting Input DC
Decoupling
C3C4
C5C6
C₇
C₈
0.1 µF
100 µF
0.22 µF
1
2πBR1
Supply Voltage by Pass
Supply Voltage by Pass
Frequency Stability
Upper Frequency Cut-off
Lower Bandwidth
D1D2
1N4001
To Protect the Device Against Output Voltage Spikes.
(*) Closed loop gain must be higher than 24dB.
Smaller Than
Recommanded Value
Decrease of Gain (*)
Increase of Gain
Decrease of Input
Impedance
Danger of Oscillation
Increase of Low
Frequencies Cut-off
Increase of Low
Frequencies Cut-off
Danger of Oscillation
Danger of Oscillation
Danger of Oscillation
Larger Bandwidth
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