Sanyo LA3450 Specifications
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
Monolithic Linear IC
PLL FM MPX Stereo Demodulator with Adjustment-Free VCO
and Measure Against Adjacent Channel Interference
Ordering number:ENN2393
LA3450
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Overview
The LA3450 is a multifunctional, high-performance FM
multiplex demodulator IC designed for high-grade FM stereo tuner use. The LA3450 features adjustment-free VCO,
measure against adjacent channel interference, pilot canceler, low distortion (0.005%), and high S/N (101dB).
Applications
• Home stereo, CD, AV-use PLL FM MPX stereo demodulator IC with adjustment-free VCO.
Package Dimensions
unit:mm
3029A-DIP28S
[LA3450]
28
1
27.2
15
14
10.16
8.6
0.25
Functions
• PLL multiplex stereo demodulator.
• Adjustment-free VCO.
• Measure against adjacent channel interference.
• Pilot canceler.
• Cal-tone signal generator.
• AM/FM input, AM/FM selector.
• Post amplifier (gain variable type).
• VCO stop.
• Right/left independent adjustment of separation (single
adjustment available).
Features
• Adjustmet-free VCO : Eliminates the need to adjust freerunning frequency.
• Good temperature characteristics of VCO : ±0.1% typ.
for ±50°C change.
• No antibirdie filter is required because a measure is taken
against adjacent channel interference.
• Less carrier leak 19kHz : 53dB 38kHz : 50dB
• The on-chip cal-tone signal generator facilitates application of recording calibrator.
• Low distortion MONO 0.005% STEREO 0.015%
• High S/N 101dB typ. MONO IHF-A BPF
• High voltage gain FM : 10dB (gain variable)
AM : 16dB (gain variable)
• Wide dynamic range Output level 3.3V typ. (THD=1%,
MONO)
2.03 1.78
0.48
0.95
4.25
4.95max
3.2
0.51min
SANYO : DIP28S
21500TH (KT)/2187TA No.2393–1/15
LA3450
Specifications
Absolute Maximum Ratings at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatloVylppuSmumixaMV
tnerruCevirDpmaLI
noitapissiDrewoPelbawollAxamdP 086Wm
erutarepmeTgnitarepOrpoT 07+ot02–
erutarepmeTegarotSgtsT 521+ot04–
Operating Conditions at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatloVylppuSdednemmoceRV
egatloVgnitarepOV
egatloVlangiStupnIdednemmoceRV
Electrical Characteristics at Ta = 25˚C, VCC=13V, Input : 400mV, f=1kHz, L+R=90%, pilot=10%
retemaraPlobmySsnoitidnoC
tnerruCtnecseiuQoccItupnioN9293Am
ecnatsiseRtupnIirnommoctupniMA,MF410262kΩ
noitarapeSlennahCpeS
noitrotsiDcinomraHlatoTDHT
leveLtupnIelbawollAxamniV
egatloVtuptuOoV
oitaResioN-ot-langiSN/SFPBA-FHIONOM09101Bd
noitcejeResioNeidriBRBzHk511=sf,Vm001=SV,langissuoirupS04Bd
kaeLreirraCzHk91LC
kaeLreirraCzHk83LC
klatssorCTC
ecnalaBlennahCBCONOMMF01Bd
ycneuqerFCSOenot-laC 004zH
egatloVtceleSMF/MAV
egatloVpotSOCV 01nipotdeilppaegatloV5.2V
leveLgnithgiLpmaLV
siseretsyHpmaLyh 5.3Bd
)1etoN(egnaRerutpaC Vm03TOLIP2.1±%
(Note 1) : The capture range is represented by the value in 19kHz equivalent.
(Note 2) : The low-pass filter used to measure electrical characteristics must have 19kHz attenuation of –90dB or more
negative value of dB and 38kHz attenuation of –70dB or more negative value of dB.
(Note 3) : Be carefull that the combination of pin 22 ⊕ and the others causes dielectric breakdown easily.
xam 61V
CC
xam 03Am
L
˚C
˚C
CC
po 51ot01V
CC
i
nimpytxam
zH001=f05Bd
zHk1=f5406Bd
zHk01=f05Bd
ONOMMF500.050.0%
NIAMMF510.080.0%
tupniVm002MA20.080.0%
%1=DHT,ONOMMF0080021Vm
MA004006Vm
ONOMMF07700110051Vm
tupniVm002MA07700110051Vm
91
83
MA → Vm002tupniMA,MF0708Bd
MF → Vm004tupniMF,MA0708Bd
MA → 62nipotdeilppaegatlov,MF5.0V
MF-MA
MF → 62nipotdeilppaegatlov,MA5.2V
L
sisahpme-eD05Bd
sisahpme-ed,relecnaC35Bd
LEVELTOLIP45.731Vm
31V
004Vm
sgnitaR
tinU
No.2393–2/15
Internal Block Diagram
LA3450
Typical Value of Voltage on Each Pin and Pin Name
.oNniPeulaV.pyTemaNniPskrameR
1V7.5tuptuoreifilpmaetisopmoCk1ecnatsisertuptuO Ω
2–CSO
3V6.2retlifpooL
4V6.2retlifpooL
5V6.2tupniLLP
6V6.2retlifnoitcetedcnystoliP
7V6.2retlifnoitcetedcnystoliP
8V6.2retlifnoitcetedcnystoliPlecnactoliproF
9V6.2retlifnoitcetedcnystoliPlecnactoliproF
01– potsOCVk021ecnatsisertupnI Ω
11– lecnactoliP pu-wolloflevel,tuptuoevawralugnairT
21V8.3lortnocenot-laC .etatsNOtaegatlovybdetneserpersiegatlovniP
31– rotacidnioeretSrotcellocnepO
410DNG
51– tuptpuoCSOenot-laC
61V7.5tupnienot-laC
71V7.5tupnilecnactoliP
81V7.5tuptuorefilpmatsoPtuptuoL
91V7.5tupnireifilpmatsoPtupni)–(,tupniL
02V7.5tuptuorefilpmatsoPtuptuoR
12V7.5tupnireifilpmatsoPtupni)–(,tupniR
22V7.5tnemtsujdanoitarapeS
32V7.5tupniMAk02ecnatsisertupnI Ω
f≅456kHz
f≅400Hz
Continued on next page.
No.2393–3/15
LA3450
Continued from preceding page.
.oNniPeulaV.pyTemaNniPskrameR
42V7.5tupniMFk02ecnatsisertupnI Ω
520 DNGlangiS
62– noitcelesMF/MAk021ecnatsisertupnI Ω
72V7.5ferVegatlovecnerefeR
82V
CC
Sample Application Circuit (1)
Input separation ≥ 0.92
ylppusrewoP
X : CSB456F11 (Murata)
KBR-457HS (Kyocera)
* : Input pilot level 20mV or greater : 0.47µF
14mV or greater : 0.22µF
8mV or greater : C3=0.1µF, R1=6.8kΩ, C4=0.47µF
* : Input separation (sub signal/main signal) ≥ 0.92 (f=1kHz)
How to Make Single Adjustmet of Separation
No.2393–4/15
Sample Application Circuit (2)
Input separation ≤ 0.92
LA3450
X : CSB456F11 (Murata)
KBR-457HS (Kyocera)
* : Input pilot level 20mV or greater : 0.47µF
14mV or greater : 0.22µF
8mV or greater : C3=0.1µF, R1=6.8kΩ, C4=0.47µF
* : Input separation (sub signal/main signal) ≥ 0.92 (f=1kHz)
How to Make Single Adjustmet of Separation
No.2393–5/15
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