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TEA2025D データシート(PDF) 6 Page - Unisonic Technologies |
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TEA2025D データシート(HTML) 6 Page - Unisonic Technologies |
6 / 8 page TEA2025D LINEAR INTEGRATED CIRCUIT UNISONICTECHNOLOGIESCO.,LTD 6 of 8 www.unisonic.com.tw QW-R107-017,B ■ APPLICATION INFORMATION(Cont.) Output Capacitors. The low cut off frequency due to output capacitor depending on the load is given by: FL = 1 2πCOUT *RL With COUT 470µF and RL=4 ohm it means FL=80Hz. Stability A good layout is recommended in order to avoid oscillations. In general, the designer must pay attention on the following points: -Short wires of components and short connections. -No ground loops. -Bypass of supply voltage with capacitors as nearest as possible to the supply I.C. pin. The low value (polyester) capacitors must have good temperature and frequency characteristics. -No sockets. The heatsink can have a smaller factor of safety compared with that of a conventional circuit. There is no device damage in the case of excessive junction temperature: all that happens is that POUT (and therefore PD) and Id are reduced. APPLICATION SUGGESTION The recommended values of the components are those shown on stereo application circuit of Fig.2 different values can be used, the following table can help the designer. Component Recommended Purpose Larger Than Smaller Than C1,C2 0.22µF Input DC Decoupling in Case of Slider Contact Noise of Variable Resistor C3 100µF Ripple Rejection Degradation of SVR, Increase of THD at Low Frequency and Low Voltage C4,C5 100µF Bootstrap C6,C7 470µF Output DC Decoupling Increase of Low Frequency Cut-off C8,C9 0.15µF Frequency Stability Danger of Oscillations C10,C11 100µF Inverting Input DC Decoupling Increase of Low Frequency Cut-off |
同様の部品番号 - TEA2025D |
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同様の説明 - TEA2025D |
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