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TDA1910 Datasheet(PDF) 11 Page - STMicroelectronics |
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TDA1910 Datasheet(HTML) 11 Page - STMicroelectronics |
11 / 15 page APPLICATION SUGGESTION The recommended values of the components are those shown on application circuit of fig. 21. Different values can be used. The following table can help the designer. Component Raccom. value Purpose Larger than recommended value Smaller than recommended value Allowed range Min. Max. Rg + R1 10K Ω Input signal imped. for muting operation Increase of the atte- nuation in muting-on condition. Decrease of the input sensitivity. Decrease of the attenuation in muting on condition. R2 3.3K Ω Close loop gain setting. Increase of gain. Decrease of gain. Increase quiescent current. 9 R3 R3 100 Ω Close loop gain setting. Decrease of gain. Increase of gain. R2/9 R4 1 Ω Frequency stability Danger of oscillation at high frequencies with inductive loads. P1 20K Ω Volume potentiometer. Increase of the switch-on noise. Decrease of the input impedance and of the input level. 10K Ω 100K Ω C1 C2 C3 1 µF 1 µF 0.22 µF Input DC decoupling. Higher low frequency cutoff. C4 2.2 µF Inverting input DC decoupling. Increase of the switch-on noise. Higher low frequency cutoff. 0.1 µF C5 0.1 µF Supply voltage bypass. Danger of oscillations. C6 10 µF Ripple rejection. Increase of SVR. Increase of the switch-on time Degradation of SVR 2.2 µF 100 µF C7 47 µF Bootstrap. Increase of the distor- tion at low frequency. 10 µF 100 µF C8 0.22 µF Frequency stability. Danger of oscillation. C9 2200 µF (RL = 4 Ω) 1000 µF (RL = 8 Ω) Output DC decoupling. Higher low frequency cutoff. 11/15 TDA1910 |
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