ICs for / Tuner AN77, AN77S Tuner, / IF Amplifier Circuit Overview The AN77 and the AN77S are the ICs designed for Hi-Fi stereo tuner. They are functioned with stop signal pin besides the AN7S function. Features Level meter output ( common use) Stop signal output (for synthesizer tuner) : including RF amplifier and high sensitivity Low power consumption Low shock noise level from function switch operation Fewer external parts Block Diagram 7 9 IF Amp. Level Meter IF Amp. Quad. Det. Mute or Shock Noise Canceller AN77 AN77S 7 5 5 7 9 ~ 5 7.±.5 -Lead DIP Package (DIP-P-E) Mute Det..±.5 AF Amp......±.5.7.7±.. 9 5.±. 7.7±..5 7.±.5 (.5).5 CC REF.5 -Lead SOP Package (SOP-P-).5±..5.5min..±..±. Unit : mm.±.5 Unit : mm includes following four Product lifecycle stage. planed d 5 RF Amp. Mixer L. Osc. AGC Det. 5 GND CC ()
AN77, AN77S ICs for /Tuner Pin Descriptions Pin No. 5 7 9 Pin Name IF Input Supply/Mute Adjustment RF Input Mixer Output AGC Output () AGC Output () IF Input IF By-pass IF By-pass Supply oltage Supply Current Power Dissipation Operating Ambient Temperature Storage Temperature * Ta = 5 C, * Ta = 75 C Pin No. 5 7 Pin Name Detection Output GND Detection Coil AF Output CC Absolute Maximum Ratings (Ta=5 C) Level Meter Output AFC Output Reference oltage Local Oscillation Coil Parameter Symbol Rating Unit AN77 AN77S AN77 AN77S AN77 AN77S CC I CC P D T opr T csg Recommended Operating Range (Ta = 5 C) Electrical Characteristics ( CC = 5, Ta= 5 C). 7 * * ~ 75 ~ 75 55 ~ 5 55 ~ 5 Parameter Symbol Range Operating Supply oltage Range CC (opr) ~ Parameter Symbol Condition min. typ. max. Unit Total Circuit Current Demodulation Output Level I tot O DC measurement i =dbµ 9 75 5 m Limiting Sensitivity i (lim) Input at O = db.5 9.5 dbµ Muting Sensitivity i (Mute) Input at O =more than db 55 7 dbµ Level Meter Driving Output () Level Meter Driving Output () Total Circuit Current Detection Output Level Max. Sensitivity Level Meter Driving Output () Level Meter Driving Output () 5 5 I tot O S max. 5 5 i =7dBµ i =dbµ DC measurement i =dbµ Input at O =m i = dbµ i =dbµ..... 9.5.5.. 9 5. dbµ m Note) Unless otherwise specified, f i =.7MHz, Mod. =.5kHz, f m = Hz () f i =MHz, Mod. = %, f m = Hz () includes following four Product lifecycle stage. planed d mw C C
ICs for /Tuner AN77, AN77S Output oltage O (db), Output Noise oltage no (db) 5 O, no, THD i () O Output oltage O (m) Output oltage O (db) no Input Limiting oltage i (lim) (dbµ) CC = 5 fi =.7MHz fm =.5kHz, Hz db = m 7 THD 5 i (lim), O, I tot CC () Itot (Mute ON) Itot (Mute OFF) Supply oltagecc () Mute OFF 5 O i Total Harmonic Distortion THD (%) Output oltage O (db), Signal to Noise Ratio S/N (db) O i (lim) CC = 5 fi =.7MHz fm = Hz,.5kHz Mute ON 5 S/N O, S/N, THD i () Total Circuit Current Itot () db = m CC = 5 fm = Hz fi = MHz Output oltage O (m) Output oltage O (db) THD Mod. = % Mod. = % 7 5 Total Harmonic Distortion THD (%) Level meter oltage 5 () O, i, I tot CC () Itot........ Supply oltage CC () O Df fm = Hz, % fi = MHz O (i = dbµ) i (at O = m ) O Mute OFF Mute ON 5 i CC = 5 () fi = MHz fm = Hz, % () fi =.7MHz fm = Hz,.5kHz includes following four Product lifecycle stage. planed d Total Circuit Current Itot () 7 Input Frequency Change Df (khz)
AN77, AN77S ICs for /Tuner Application Circuit D : MA7W From Front End. Ω Printed Circuit Board Layout SW ANT Mute SW.kΩ Mute ON 7µF 7 5 AN77/S 5 7 9 OFF. µf.µf Mute Adj. T kω C ANT 5Ω D kω 5 µf kω IN 7Ω µf 5.kΩ OSC T µf µf T CF 7Ω Ω µf µf 7µF.7µF.kΩ µf.7µf 7Ω CF 5.kΩ MA7W (Matsushita) T IF Input T.7µF CC CF.kΩ. µf 7Ω µf µf.7µf 7kΩ 7pF T CC=5 O (, ) CC µf 7kΩ.µF AN77 AF Output includes following four Product lifecycle stage. planed d
ICs for /Tuner AN77, AN77S Coil Specifications Symbol T T T Use, Freq. Type No. Maker Connection Diagram Number of Turns Tuning Cap. Unloaded Q Quad. Coil.7MHz MW Osc. Coil Mix. Output 55kHz ELF 7S75A ELL 7S75 EIA 7SA Ceramic Filter Specification CF Matsushita Matsushita Matsushita T 5T T T 5T 7T 5T T 9T pf 5pF Symbol Use Type No. Maker Center Freq. Band Width Loss 9±% 95±% ±% IF C 55B Toko 55kHz 7kHz (db).db includes following four Product lifecycle stage. planed d
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