Published:2011/5/14 3:11:00 Author:Borg | Keyword: tuning, AM, FM | From:SeekIC
BA4230AFSis an AM electrical tuning and FM middle amplifier integrated circuit produced by Toyo Corp.,Japan, which is used in micro AM/FM radios of assembly 1.5V power supply.the internal circuit and pin functions of BA4402The FM part of BA423OAFS contains difference IF amplifier, double balance wave-detector, IF silence-noise circuit. The AM part contains local oscillator, frequency mixing,middle amplifier, wave detection and AGC circuit. Besides, BA423OAFS contains tuning indicating LED drive circuit. The internal circuit of the chips are shown in Figure 1.
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