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TDA8214B Datasheet(PDF) 5 Page - STMicroelectronics |
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TDA8214B Datasheet(HTML) 5 Page - STMicroelectronics |
5 / 9 page 20 SL2 SL1 VR Video R1 R2 Figure 1 : Synchronization Separator Circuit GENERAL DESCRIPTION The TDA8214B performs all the video and power functions required to provide signals for the line driver and frame yoke. It contains: - A synchronization separator - An integrated frame separator without external components - A saw-tooth generator for the frame - A power amplifier for direct drive of frame yoke (short circuit protected) - An open collector output for the line driver - A line phase detector and a voltage control oscil- lator - A super sandcastle generator - Video identification output. The slice level of sync-separation is fixed by value of the external resistors R1 and R2. VR is an internally fixed voltage. The sync-pulse allows the discharge of the capaci- tor by a 2 x I current. A line sync-pulse is not able to discharge the capacitor under VZ/2. A frame sync-pulse permits the complete discharge of the capacitor, so during the frame sync-pulse Q3 and Q4 provide current for the other parts of the circuit. Vz ST2 ST1 I 3I SL1 Vz /2 Q3 Q4 Figure 2 : Frame Separator TDA8214B 5/9 |
Similar Part No. - TDA8214B |
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Similar Description - TDA8214B |
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