TDA7421N PDF Datasheet
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Description
This is AM/FM TUNER. TDA7421N
AM, FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONS
PRELIMINARY DATA
s HIGH PERFORMANCE FRONT-END IC FOR AM, FM RECEIVERS
s FULLY INTEGRATED HIGH-SPEED PLL FOR OPTIMIZED RDS APPLICATIONS
s FM MPX, AM AUDIO OUTPUT, 450kH- AM IF OUTPUT FOR STEREO AM APPLICATIONS
s AM DOUBLE CONVERSION ARCHITECTURE
s AM, FM STATION DETECTOR AND DIGITAL IF-COUNTER
s SINGLE FREQUENCY REFERENCE FOR BOTH AM AND FM
s FULL ELECTRICAL ADJUSTMENT s I2C-BUS PROGRAMMABLE
DESCRIPTION The TDA7421N is a high-performance tuner circuit which integrates AM and FM sections, PLL frequency sinthesizer and IF counter 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 compensated by means of on-chip elec-
TQFP64
ORDERING NUMBER: TDA7421N
trical adjustment controlled by external P. The FM quality detection circuit, in conjunction with the digital IF counter, enables the stop-station function .