Daewoo dsc-3220e-3220l Manuel D’Utilisation

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5-2  IF section

5-2-1 Block diagram

 The video IF signal (VIF) is fed through a SAW filter to the differential input (Pin 6-7) of the VIF amplifier.

5-2-2 Vision IF Amplifier

 This amplifier consists of three AC-coupled amplifier stages. Each differential amplifier is gain controlled by the 

automatic gain control circuit (VIF-AGC). The output signal of the VIF amplifier is applied to the FPLL carrier 
generation and the video demodulator.