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TDA7421N Datasheet Am/fm Tuner

Manufacturer: STMicroelectronics

Overview: 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,.

General 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 µP.

The FM quality detection circuit, in conjunction with the digital IF counter, enables the stop-station function in “seek” mode and MPX mute during reception.

TDA7421N Distributor