AN7289NFBQ

ICs for FM/AM Tuner AN7289NFBQ FM-FE+AM IC for car radio s Overview The AN7289NFBQ is an IC having FM-FE+ AM functions for car radio. A tuner block of car radio can be constructed by using this IC and the AN7293NSC/NFBQ. 25 Unit : mm 24 17 16 0.3+0.10 –0.05 7.0±0.3 0.625±0.100 A less number of electrolytic capacitors is required (3 capacitors reduction compared with our conventional IC) AM: Effective sensitivity is improved by 2 dB through ATC AM: Strong-input characteristic is improved by 2-loopAGC function The AN7289NSC of DIL package type is also available 32 0.1±0.1 0.15+0.10 –0.05 0.625±0.100 1 8 0.8 s Features 9 7.0±0.3 9.2±0.4 (0.55) LQFP032-P-0707 s Applications Car radios s Block Diagram FM-mix. in 21 FM-PIN D 24 23 22 20 19 18 VFOSC 25 VAOSC 26 GND2 27 28 Keyed-AGC in 29 AM-AFOUT 30 31 32 FM/AM SW FM AGC AM OSC FE OSC AM. S-meter AM ATC AM det. AM IF AGC AM SSC AM RF AGC AM IF amp. FM mix. FM IF amp. AM mix. 17 16 15 14 13 12 11 10 9 1 VCC 2 AM-IF count 3 AM-SD out 4 AM-S. meter 5 6 AM-IF out 7 GND1 8 1.4±0.2 9.2±0.4 1 AN7289NFBQ s Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Description 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 FM-IF input AM-RF gain control AM-mix. input Pin No. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 ICs for F...