am/fm tuner for car radio and hi-fi applications.
FRONT-END FOR AM/FM RECEIVERS UP-CONVERSION ARCHITECTURE FOR AM HIGH SPEED PLL WITH INLOCK DETECTOR FOR OPTIMIZED RDS A.
The TDA7421 is a high performance tuner circuit that integrates AM/FM sections, IF counter and PLL synthesizer on a single chip. Use of BICMOS technology allows the implementation of tuning functions with a minimum of external components. Value sprea.
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