Samsung circuit description 193 free download

File name circuit_description_193.pdf

13. Circuit Operating Description 13-1 Splitter (MOD101) 13-1-1 Function Splitter receives the RF signal from antenna input at rear panel (ANT IN). The received RF input signal split two ways by splitter for input of two tuners and RF out at rear panel. To boost the divided RF signal, 5V is supplied. 13-1-2 Block Diagram ANT IN Booster Splitter Tuner in RF OUT 5V Fig. 13-1 13-2 Tuner (TM101, TM102) 13-2-1 Function It's consists of Tuning block and QAM-Demod block. Function of tuning block tunes the channel from 51 to 858MHz input RF signal and makes the IF (36.125MHz) which is sent QAM-Demod block. Function of QAM-Demod block makes the MPEG-2 TS (Transport Stream) by QAM demodulation. TS is consists of Data [0:7], Sync, Error, Valid and Clock signals. Tuner is controlled by I2C. Samsung Electronics 13-1 Circuit Operating Description 13-2-2 Block Diagram RF Input 51~858MHz ANT.IN H.P.F LNA RF AGC AGC Rriver ANT.OUT Snlliter VHF RF AGC VHF ATT Trackine Filter AMP Trackine Filter MOPLL SAW UHF RF AGC UHF Trackine Filter AMP Trackine Filter IF AMP IF AGC Digital Demodulator I2C