Samsung DVD-P355B/XEL, DVD-P355B/XEU 13-2-1 RIC1 SP3723, a Basic Potentiometer, 13-2-1b RF signal

Circuit Operating Descriptions

13-2 RF

13-2-1 RIC1 (SP3723)

SP3723 is combined with Zoran Vaddis 6 as bipolar IC developed for DVD SERVO system.

Main features include DVD waveform equalizing, CD waveform equalizing, focus error signal generation, 3-beam tracking error signal generation, DPD 1-beam tracking error, defect, MIRR output, Laser Power Control, etc.

13-2-1 (a) Basic Potentiometer

SP3723 Uses 3.5V to 5.5V and reference voltage is 1.65V.

13-2-1(b) RF signal

Fig. 13-11 shows the flow of signal generated by the pick-up.

RF signal detected from pick-up is converted in to RF signal via RF interface and attennuators. A, B, C, D signals detected from pick-up are converted in to FE, TE, PI, CE, DEFECT signals.

Fig. 13-11

Samsung Electronics 13-7