AN7289NSC

ICs for FM/AM Tuner AN7289NSC FM-FE+AM IC for car radio s Overview The AN7289NSC is an IC having FM-FE+AM functions for car radio. A tuner block of car radio can be constructed by combination of this IC and the AN7293NSC / NFBQ. 17.81±0.3 32 17 Unit: mm s Features A less number of electrolytic capacitors is required (3 capacitors reduction compared with our conventional IC) AM: Practical sensitivity is improved by 2 dB by ATC AM: Strong input characteristics is improved by 2-loop AGC function 1 16 7.2±0.3 9.3±0.3 1.23 1.0 Seating plane s Applications Car radios SSOP032-P-0375 s Block Diagram GND2 32 31 30 29 28 27 26 25 24 23 22 21 20 19 0.1±0.1 0.9 0.35±0.1 18 15 2.0±0.2 0.15 FE OSC AM OSC FM AGC FM/AM SW FM mix. AM RF-AGC AM mix. AM.S-meter FM IF-amp. AM ATC 1 2 3 AM IF-AGC 4 5 AM det. 6 7 AM SSC 10 8 9 AM IF-amp. 11 12 13 14 16 1 GND1 VCC 17 0.3 AN7289NSC s Pin Description Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Description FM-keyed-AGC input AM-AF output / LO setting AM-ATC input AM-IF level detection AM detection output VCC1 AM-IF counter output / DX / LO SW AM-SD output AM-signal meter output FM-IF output AM-IF output GND1 SSC AM-RF level detection AM-WAGC detection / DX setting AM-IF input AM-mix. output 31 32 Pin No. 18 19 20 21 22 23 24 25 26 27 28 29 30 ICs for FM/AM Tuner Description FM-IF input AM-RF gain control AM-mix. input FM-PIN-diode driver AM-OSC coil pin FM-mix. output (2) FM-mix. output (1...