AN7224 PANASONIC | Alldatasheet
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AM Tuner, FM-AM IF Amplifier Circuit for Radio Cassette Recorders Unit : mm @ Description 7a ois os The AN7224 is a monolithic integrated circuit designed for q eC high performance, multi-function FM-AM IF system. 4 Ee gle 4 J > <j s oc 10 @ Features a os @ Wide operation voltage (Vcc = 2.8V ~ 9.6V) $35 © Incorporating both FM and AM detectors 150 408 310 @ Incorporating a level indicator output (FM / AM. 1.80) 355 common) © AM: High sensitivity, including RF amplifier . al @ Low power consumption + 7a @ AFC control @ Few extemal parts 18-Lead DIL Plastic Package (18-DIP) @ Block Diagram | It Gvee O~ AM- FM FMIF FM (7) (6) —-L Fr Amplier pee Quad. Detector AM AM AM AM {ei {i} = n= Pip ,~ Vec(AM) eee Panasonic * MM 6932852 0013873 986 254
@ Absolute Maximum Ratings (Ta=25°C) Supply Conen [ke fm Operating Ambient Temperature °C Storage Temperature *c Operating Supply Voltage Range: Voc = 2.8V ~ 9.6V @ Electrical Characteristics (VCC=SV, Ta=25°C) mv [eine seni | Vem [von 8 | | | Note) FM : f = 10.7MHz, faey = 22.5KHz, fm = 400Hz AM : f= IMHz, fm = 400Hz, Mod = 30% @ Pin vo] vecamy 0 AM Detector Ouput 3 | AMMixer ouput | FM Detector Col 5 [account Vee
6 AM IF Amplifier Input Level Meter Output
- MM 6932852 0013874 61c Panasonic 255
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O-)—-OC-O-©)-© OO AM Input [0-022 + + a 3 1001724.7n 272 r | 25k] 50 5 22n 56 | FM %n 7220 @) |1smui By tpt h om Ts bee FMo a aM 33.22" = 0.022, i @ Application Circuit ys va a : Zw 470 0.022 Ts a a a 4700p oom h a 733M A 710 213 a #3 “ O99) 09 AM BAR ANT O-® O-O-O-© OOO loonzz4. tat r PT 35k] S6p 22n = 22n Sia 25330 © Front Ena Ts ch FMo a AM? 33nz rom — eee Panseonic * MM 6932852 0013875 759 256
B@ Coil Specifications FM Quad ot aOR ROMOMEL T Coil EIF-7S752A | Matsushita lE ®:-® st 100pF 90+20% ®-@ 4T tT, | AMMW | BLL-78754 | Matsushita 2$E ®-@ 12st 95420% ®@@© 7 AM Mixer Sic -® | ©@-@ 357 Ts | Output FIA-7S802A le ®©-@ 107 | 1500pF | 60#30% 455kHz © (O) (0) 19T @ Ceramic Filter Specification ™@ Characteristics Curve Wwe Vno, THD - Vin (AM) a Vous - 11) - Vin — AIA € © A OTT aa a 2 UT 8g f # ; Ee S84 fee. TUL 3 ATLL CLeEee 2 2. IY | e<S door, [I | c £12 Af | tet oe VAR es 2 Land LTT 23 ooplAliczmme LT) 2 ie SEU NT aI 2 Bot oy
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22d NN , 2 a z oa HT Ts 56 dl Neate Voll & BT a LTT reasot [YT = BTL Teeth 0 20 40 60 80 100120140 3 = “0 20 40 60 80 100120140 Input Voltage Vin (dBu) © Input Voltage Vin (4ByL) Vo, Vno, THD - Vin (FM) = soe 260: Vin Hoa = Vcc (AM) § flea tle ~ fa Lyyoactado lg ge Teli 2 € Ba Io he Se ool LLY! | fos = tom | ane wir ae Veco=.V .-4 = E pei-| = | 5 fe LT score sg 2 = | || ane: 23 | LIU 2 Wa 2 sol-> 18 ae 8a SF 49) 2skHz | 4A sg ap rt y*e $3 (VIN fig2 107M | 2 s 2 Rak, g
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———eeeeeeeeeeSeeSSSSSSSSSSSSSSSSSSFeeeeeee @ Characteristics Curve (Continue) ~ Vi6-17- Vin ' go — 7 Vinaim, Iter - Voc (FM) € (itesy woh & fin = 400H2, S 64] Het16 § 3 vo tH an 20/8 Lee's = 200) Pd Fed Ie saaor 48 S sol LUT % sl = TLTLLL fies tome" E 2 ALT £ “re CMT. S Seiiinsliiin tol UME 2. B 20-3 Leet 8 $ TTT 8") EAR g
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0 20 40 60 80 100120140 0 2 4 6 8 10 12 14 Input Voltage Vin (dByL) Supply Voltage Voc (V) @ Printed Circuit Board Layout (Scale: 1:1) @ AN7222/24 r.) > “2 ‘i . }. 2 C3 sw i i pew icie) & ° Vcc MECS © SSS Panasonio ‘MM 6932852 0013877 52) a 258