INTERMEDIATE FREQUENCY CIRCUIT FOR TELEVISION BROADCAST RECEIVING TUNER

PROBLEM TO BE SOLVED: To provide an intermediate frequency circuit for a television broadcast receiving tuner which is miniaturized when being made an IC and sufficiently attenuates a signal outside an IF band even in a digital processing system of the intermediate frequency circuit. SOLUTION: The intermediate frequency circuit 5 for a television broadcast receiving tuner having an output terminal T2 for a digital signal and an output terminal T3 for an analog signal includes a single phase differential conversion circuit 52 having first and second amplifier circuits 60 and 61, wherein the amplification degree of the first amplifier circuit 60 is set larger than the amplification degree of the second amplifier circuit 61, an output end of the first amplifier circuit 60 is connected to a digital signal output terminal Tod, and an output end of the second amplifier circuit 61 is connected to an analog signal output terminal Toa. COPYRIGHT: (C)2011,JPO&INPIT