SA1787 Datasheet, PDF (13/19 Pages) Silan Microelectronics Joint-stock – SINGLE-CHIP TUNER IC FOR CAR RADIOS

Figure 6 shows the relationship between the AM SD, the IF count buffer, and the S-meter.
SA1787
Figure 6
AM high band cut and detector output level adjustment methods
Figure 7, the pin 31 AM and FM tuner output has an impedance of 10 kΩ in AM mode and a few tens of Ohms in
FM mode. Therefore, R31 is used to lower the AM detector output level and C31 determines the AM high band
frequency characteristics.
Figure 7
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
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