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TDA7300 Folha de dados(PDF) 8 Page - STMicroelectronics |
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TDA7300 Folha de dados(HTML) 8 Page - STMicroelectronics |
8 / 16 page APPLICATION INFORMATION Volume Control Concept Traditional electronic volume control circuits use a multiplier technique with all the disadvantages of high noise and distortion. The used concept, as shown in Fig. 15 with digital switched resistor dividers, provides extremely low noise and distortion. The multiplexing of the resis- tive dividers is realized with a multiple-input op- erational amplifier. Bass and Treble Control The principle operation of the bass control is shown in Fig. 16. The external filter together with the internal buffer allows a flexible filter design ac- cording to the different requirements in car radios. The function of the treble is similar to the bass. A typical curve is shown in Fig.19. Outputs A special class-A output amplifier with a modu- lated sink current provides low distortion and ground compatibility with low current consump- tion. Figure 15: Volume Control Figure 16: Bass Control Figure 17: Quiescent Current vs. Supply Voltage Figure 18: Quiescent Current vs. Temperature TDA7300 8/16 |
Nº de peça semelhante - TDA7300 |
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Descrição semelhante - TDA7300 |
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