SA1787 Datasheet, PDF (11/19 Pages) Silan Microelectronics Joint-stock – SINGLE-CHIP TUNER IC FOR CAR RADIOS

FUNCTION DESCRIPTION
1. FM Front End
Oscillator
Figure 1 shows the type of oscillator circuit used in this IC.
Figure 1
Figure 2 shows the type of FM first IF amplifier used in this IC.
— Input impedance: 330 Ω
— Output impedance: 330Ω
— Gain: 20 dB
Figure 2
2. FM IF
Figure 3 shows an overview of the FM SD and the IF count buffer.
SA1787
Figure 3
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.0
2008.08.29
Page 11 of 19