TDA4661, TDA4661V2 integrated block internal box circuit

Published:2011/5/6 22:20:00 Author:TaoXi | Keyword: integrated block, internal box | From:SeekIC

1.Pin functions and data The TDA4601 is in the single 9-pin DIP package, the pin functions and data is as shown in table 11. Table 11 TDA4601 TDA4601 pin-5's functions and data 1.Features The TDA4661 and TDA4661V2 are used as the geometry adder (vector sum) according to the color signal standard, to meet the requirements of PAL format decoder: in the NTSC system, it plays the role of comb filter to reduce the cross color interference; in the SECAM system, it plays the role of line memory to ensure that each line exists the (R-Y), (B-Y) color difference signals when it is decoding to complete the right SECAM decoding system role. The block diagram of the circuit is as shown in figure 11.



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