TDA4857 integrated block internal box circuit

Published:2011/5/6 8:25:00 Author:TaoXi | Keyword: integrated block, internal box | From:SeekIC

3.Pin functions and data The pin functions and data of the TDA4660 and TDA4660V2 is as shown in table 13. Table 13 The pin functions and data of the TDA4660 and TDA4660V2 1.Features The TDA4857's line & field oscillator can automatically changes the line and field oscillation frequency by the input horizontal and vertical sync signal. The free oscillation frequency of the line oscillator is 31.45 khz, the line frequency operating range is 50 to 130kHz, the field frequency operating range is 50 to 60Hz. The IC's field excitation signal output is the differential output mode, this mode can outputs the descent field ramp and the ascent field ramp to drive the DC coupling field output circuit. This circuit also has the soft start function, the X-ray protection function and the +B switching power supply control function.etc. The integrated block internal box circuit is as shown in figure 13.



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