| 摘要 |
DESCRIBED HEREIN IS AN IC SUITABLE FOR USE IN A TUNER (IC1). IN THE IC, RESPECTIVE MAJOR CIRCUIT PORTIONS IN A FREQUENCY MIXER CIRCUIT, A LOCAL OSCILLATOR CIRCUIT, A PHASE LOCKED LOOP (PLL), AND AN INTERMEDIATE FREQUENCY AMPLIFIER CIRCUIT ARE INTEGRALLY PLACED WITHIN ONE PACKAGE (3). A UHF SELECTION TERMINAL (132), UHF SIGNAL INPUT TERMINALS (130, 131), A VHF SIGNAL INPUT TERMINAL (129), A HIGH - FREQUENCY GROUND TERMINAL (128), FREQUENCY MIXED SIGNAL OUTPUT TERMINALS (126, 127), VHF BAND SELECTION TERMINALS (124,125), A POWER TERMINAL (123) AND INTERMEDIATE FREQUENCY INPUT TERMINALS (121,122) ARE DRAWN OR LED OUT TO ONE END OF THE PACKAGE (3), WHICH IS LOCATED ON THE SIDE OF THE LONG SIDE THEREOF, IN THIS ORDER.(FIG. 2)
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