SI4743 데이터 시트보기 (PDF) - Silicon Laboratories

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SI4743

Si470X/1X/2X/3X/4X EVALUATION BOARD TEST PROCEDURE

Silicon Laboratories 

AN388

Figure 13. Pre-emphasis Filter Response

To compensate for the effects of pre-emphasis, the tuner has a de-emphasis filter with low pass characteristics.

This filter would need to attenuate higher frequency signals to achieve a flat audio frequency response. Frequency

response of an ideal de-emphasis filter for both time constants is shown in Figure 14.

Figure 14. De-emphasis Filter Response

Rev. 0.2

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