LA1231N LA1232 • •}lq,ij FM·~-~~ LA1131N/LA1132 iY.~~Ji/it:X,I!lt ~::::::::~ ( .a,.IE~~f}t, ffl%~tllfl ,AFC ~li~tllfl, jg)g AGC tllfl, it!Mftf:tlit:k, ~ ffi %ft.,~ ilffH., ft ~~~&~~~/itW~~~-oA~RtM~-~-' ~•'J,,fff~tt•,rw~•m*~~li•~~ff~m I 8 ....----19.2 ~l~ ~~ llt:;tilj\~}it~lf·~(JgjJ.J!'ff~JJtt~,Jjilf~~~- lfl··*~~~o~B~~fff%~~~-lfi~·A 1.2 .fff%1'!97i"JJ!«<Jilt.iElto ~ft~PJtE 9-14V ~-~ffi f'Bfll ~Ifl= .Jt:~7tm~:lli:~ ftl'f9ft~~t'io LA1231N f!l tA1132 PI ~:!L!lo 2. 54 fii!IIGII[V-cixnmJ= 16V,PD(~) ::!6SOW] IF QUAD OUT IN Vref 8 9 10 7 AFC/Tuning meter IF IN{2 BYPASS GND AF OUT 3 4 MUTE CON IS IF STOP -~~-~il lcco ~-~il Icc -~-lfl Vo fff~lt tlARt.a~ffi ~ilfflt~-~ ·~~-~ • 406 • Bs muter 16 Mute ON adj DRIVE E;;30mA 240-460mV SIN v, = lOOdBt-t v, = 100dBt-t,400Hz 100%~· v, =100dBt-t,400Hz 100%i'\Jftitj Vt(lim) V0 r~ 3dB,400Hz 100%i.IJM E;;3ldBt-t nm v, =100dBt-t,400Hz 100%J.Iilid v,<_l V12 =1.4V E;;0.3% E;;33mA ;;,72dB 13- 35dBt-t 1231 ..• AMR i'l1 MttlJ ftitJ tt flli!J«~tiili 1J§f% ~ !}« ~ -~ 0-0.3V -~ 0-0.1V V1 = 100dBt-t liS fit~Iftlt!:>f- Yu;(mute) ;;;,4.5V -~ VIS 'P~~fijlf!Vft 4.0- 6.0V V1 = 100dBt-t VJJ AGC ttl tf:l 4.2- 5.5V V1 =100dBt-t 0-0.5V ~~~. V8 _ 10- OOt-tA 10 :s;;20mV V, = IOOOdBt-t. V12 =1.4V ,..., V 1= 100d8 Jl 6 - > >-"' - -33 .,.; • • II ~ ,.loll 00 00 I ..... "' C; -300 - 200 -' ,.loll -< .,.; :E ....u ::i 2 a l* 0 100 ~ 300 200 Vee liVV~f-10. "\ 9 7MH z ,..., > !:::l > ;~ . . ., : 2 2.2k;; -33 ~ri±~ 414 471< \ .-2-- -= ,-... E ~ > 5s iE3C1a.Ji} Vq J J 5 ~ iO ? v -.- ~ 10 7k v 50 100 lt" 6 I S 1I 16 ~Et!.ffi v16(V) 12 Rl6- G 'i(X) 13 1 4 11 1k ',o 10• 10 <., 'iCll< 1001< 16 9ifii~;j"iW,Et!_llJl R16-G(fl) 50'), Jv 1m -ffil 5 f- :H< 2 ~ I J5 02 0 3 OJ. OS 06 0.7 0.8 0.9 I 0 400 v r- 1 C; \ (mV) I s OI J50 II H :s '!* ·o 1\ \ 5 ,..., .:...() ~ 300 250 v,-HJOcSB,. ~~ i 0 -ffil I 1.0 Oo 0 I so > ,-... u 20 '1\.. 60 \ s OS 200 3.5 \ 40 l=r.' C; 150 ).0 25 2.0 35 $ l:l:SJ 100 IS so 4s 2 l* \ \ 50 10 5 ~Et!.ffi V 5(V) 30 11 \ 0 OS ss t--~f---i--+- V1- IOOdB 11 t---t-- o. 04)-j_ ~II 0 60 N(lHz) 1\ 0 -60 -70 o. 04~ OS -JO ~ -~ ~ -50 -100 \ -20 3 1 ~}'IJM!.$ 60 .... ,.:.14 ~ $ ~ ~ -10 ,..., .... - - - ,.loll 0 CQ 5 ,..., ss 0. 7 -I.OV 10 tf~~~~ -lo(X) ;;;,45dB AM 1kHz 30%i'IJftitj Y12 ** ili •• = V1 100dBt-t, FM 400Hz 100% i'IJ ftitj , ~ tr V 15 (IF OFF)- IOOu 5 ft-f.,(IF OFF) 1 r lOu ICJ I I [ -v 11() 120 . 407 . . 1231 ~· I .L. • Yo(fdB = 330mYrms) v -- I I I -l - - ~ r\\ h. \ 1\.. \ \ \' - 40 T 60 ........ \ IV' \~ 0 0 120 w -----r---, o 10 20 ,. I --· I ~· ~- > 30 "/ t.O 50 m ~ m ------ -~··-- / r---~ / ----- .H:d? 15 n 10 v,2 =4.9v V13 =OV v,~ = 5.ov v(l = 5.6V V1=S.6V . 408 . 1 AFC V,~ +12V R4 V1o •AhAg tk 220 V3 =2.6V 2 ;J; ;;; Al+37 5 10(kn) Vee V2 = 2.6V · =5.6V 0. 0471' AM Vee 120 ----------- -----·-- v . . ., VR =5.4V w no ~t ~ " ..---- / V1 =2.6V 100 t ' 7- Ej 10 -IBJEI!~Il R7 _ 90 32 --- f- - 0 'P~ttAEt!li Y 1(dB I ' I I ~"' ~ 'I 'PM!fitAEt!ffi Y1(dB I ~ \G // c.R.:-100 10 J ;;~ ~ YNo '20 ""\ v AMR T~D \ \ r-- > I T I I _I I FM:400Hz 75kHz AM~ikHz _tl.L=3o%·_ meter