AN5421 line same-frequency signal detection integrated circuit

Published:2011/6/29 3:06:00 Author:Christina | Keyword: line, same-frequency signal, detection, integrated circuit | From:SeekIC

The AN5421 line same-frequency signal detection integrated circuit is produced by the Panasonic company that can be used in the Panasonic series large screen color TVs. 1.Features The AN5421 can be used to detect the line synchronous signal from the frequency signal, and it outputs the detection result in the form of DC voltage to control the station search program of the system control microcomputer. 2.Pin functions and data The AN5421 uses the single row 9-pin package, the pin functions and data are as shown in table 1. Table 1 The pin functions and data of the AN5421 3. The internal circuit block diagram and the typical application circuit The internal circuit block diagram of the AN5421 is as shown in figure 1, the typical application circuit is as shown in figure 2. Figure 1 The internal circuit block diagram of the AN5421 Figure 2 The typical application circuit of the AN5421



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