TDA7421 PDF Datasheet


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Description

This is AM/FM TUNER FOR CAR RADIO AND Hi-Fi APPLICATIONS. ® TDA7421 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 APPLICATIONS SINGLE FREQUENCY REFERENCE FOR AM, FM AM, FM STATION DETECTOR P-CONTROLLED COMPENSATION OF EXTERNAL COMPONENTS SPREAD ADJUSTABLE AUDIO MUTE FULLY PROGRAMMABLE BY I2C BUS ADVANCED BICMOS TECHNOLOGY GENERAL DESCRIPTION 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 spread of external components can be fully PINS CONNECTION AM AGC1 RF AMP FM IF AMP1 OUT FM IF AMP1 IN + FM IF AMP2 IN + FM IF AMP1 IN AM AGC1 PIN TQFP64 ORDERING NUMBER: TDA7421 compensated by means of on-chip electrical adjustment controlled by external P. The Automatic Gain Control (AGC) operates on different sensitivities and bandwid.