Monolithic Linear No.2887B AM/FM-IF/MPX Tuner System ^for Ra

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Monolithic Linear No.2887B AM/FM-IF/MPX Tuner System ^for Ra

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Ordering number 2887B
Monolithic Linear
No.2887B
AM/FM-IF/MPX Tuner System ^for Radio Cassette Recorders, Music Centers
Overview
LA1805 characteristics-improved version LA1810, with same assignment package those LA1810. Improvements made following points:
Separation (35dB 48dB) dependence free-running frequency (Sep Characteristic page
main distortion (0.8% 0.45%)
detection output (approximately increased)
constants five external parts changed shown page
Functions
FM-IF: amp, quadrature detector, soft muting, tuning MPX: stereo decoder, stereo indicator, forced monaural, stop
amp, MIX, OSC(with ALC), amp, detector, AGC, tuning indicatoFeatures
FM/AM/MPX functions contained single chip
Minimum number external parts required
On-chip muting function
High sensitivity
Less carrier leak
Maximum Ratings atTa specified Test Circuit.
unit
Maximum Supply Voltage Pins 3,7,8,11,20,21
Maximum Supply Current Pins
Flow-in Current Iled Pins
(Indicator Drive Current)
Flow-out Current
Allowable Power Dissipation
Operating Temperature Topr
Storage Temperature Tstg +125
Package Dimensions
(unit: 3067
nnnnnnnnnnnn
SANYO: DIP24S
SANYO Electric Co.,Ltd. Semiconductor Business Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10,1 Chome, Ueno, Taito-ku, TOKYO, JAPAN
D0994JN/4030MO/N148YT.TS No.2887-1/13
1805.
Operating Conditions unit
Recommended Supply Voltage
Operating Voltage Range
output level forms curve (LA1805) curve (LA1806). LA1805: curve (for band)
LA1806: curve (for Japanese band). Your desired output level varying output resistance.
Operating Characteristics 4.5V,See specified Test Circuit.
Characteristics (Mono): 10.7MHz,fm 1kHz unit
Quiescent Current Icco input
Sensitivity 3dB.L.S. Referenced lOOdBp, 100%,down
Demodulation Output 100dBp,100%mod.
Channel Balance C.B. 100dBp,100%mod.
Total Harmonic Distortion 100dBp,100%mod. 0.45
Signal Noise Ratio 100dBp,100% mod.
Sensitivity Vled IL=lmA
Characteristics (Stereo) 10.7MHz,fm lkHzlL 90%,pilot=10%fViN lOOdBp
Separation
Stereo Distortion (Main) 0.45
Level VLED-on
Level VLED"Off
Characteristics 1000kHz,fm 1kHz
Quiescent Current Icco input 14.5
Detection Output 23dBp,30%mod.
80dBp,30% mod.
Signal Noise Ratio S/Nl 23dBp,30% mod.
80dBp,30%mod.
Total Harmonic Distortion THD1 80dBp,30%mod. 0.45
100dBp,30% mod.
Sensitivity Vled
Note fully careful dielectric breakdown. Equivalent Circuit Block Diagram
No.2887- 2/13
LA1805
Test Circuit
input
HW-6193 HW-6215 YT-J0I03
Polystyrene film capacitor Differs from application circuit where front used. (See Sample Application Circuit page 10.)
Unit (resistance: capacitance:
LA1805 Forced monaural mode
Figs.l show cause forced monaural mode entered. Connect through resistor lOOkQ. (Turn theSWl Fig. Connect through resistor 47kSl (Turn Fig.2.)
Unit (resistance:
/s:R1
'100k
Fig.l Forced Monaural Mode Setting Method
LA1805
Fig.2 Forced Monaural Mode Setting Method
Either above-mentioned causes forced monaural mode entered. this case, does stop operating. resistance decreased, internal bias will vary frequency will vary when turned This data shown Fig.3.
Fig.3. Forced Monaural Mode Setting Resistance Free-Running Frequency
:=8v
1,R2
No.2887-3/13
LA1805
Stop
designed stop automatically mode.
(when same potential) There available stopping mode. However, method shown right used stop mode, causing forced monaural mode entered.
Free-running frequency measurement adjustment Either following methods used measure free-running frequency.
Connect frequency counter through high input impedance amplifier.
LA1605
Make wiring short possible.
1805
Fig.4
counteFig.5
Connect connection point semifixed resistor connected fixed resistor frequency counter through resistor 240kS2 greater.
Fig.7
rrwto counteFig.6
error changes with resistor value shown Fig.7
inputlOOdBp Nonmodulation
Resistor Value,Rx kf250
When setting free-running frequency, following must noted.
Apply 10.7MHz lOOdBp nonmodulation carrier input signal 76kHz with tuning indicator lighted.
Fig.
Separation setting capacitor
separation characteristic alone input) differs from that antenna input with front end. This difference caused characteristics front ceramic filter. Shown right separation characteristic changes with separation setting capacitor value when LA1186N used front end. Referring this separation characteristic, choose optimum separation your model.
166N LA1605
Free-running Frequency,fp
No.2887-4/13
1805.
muting
external resistor connected used vary muting level (Fig.9). abnormal sound time side peak reception mode reduced weak signal muting.
Fig.9 LA1186N LA1805 Muting Characteristics
Fig. LA1186 LA1805 Attenuation -Detuning Frequency
Input -dBn
-1000 -9C0 -6C0 -4Q0 -200 -400 Detuning Frequency/
1000
following method used change sensitivity mode (Fig. 11). data sensitivity setting resistance sensitivity shown Fig.
Fig.12 Sensitivity
Fig. Method Change Sensitivity Mode
Unit (resistance: capacitance:
10." 'MHz
22uZ
>nce(R Open)
Resistance,R
AM-FM selection
mode entered with open shown Fig. When made same potential terms mode entered. should noted that dynamic range narrowed whether potential lower higher than that
1605
Fig. Unit (capacitance:
noise appears detection output when tunig goes mode, connect capacitor across eliminate noise.
No.2887- 5/13
1805.
Characteristics
fc=10.?MHz 7CI/LI,
y.LED-c
Xk/T
DemoduJat onoutf
oise
Input
Selectivity Characteristic
1kHz-30/imod Output 20mV const.
/-to -450B
Detuning Frequency
Whistle Characteristic
-Det< jction tpuHU
/Jl$f/
'1.5
'1.0
Characteristics
etectio TOUtpU 30'/.
E-j.
Input dB/m Fidelity Characteristics
Modulation Frequency
Reception Characteristics
Max. sensitivity(lJcHz-30%mod>output 20mV)
Input dB/m
4.00 1000 1200 1400 1600 JflOO Receiving Frequency
No.2887- 6/13
LA1805
fom-io
"g-oo
Characterisecs
Demodi jlationo utput 7MHZ
sensitivity
(100% mod)
Supply Voltage,
Temperature Characteristics
10.7MH ^^^.intiAnniitnut.input lOOdBti
-IkHz-IOO/imod
Characteristics
Demodulation output =10QdB/ni,'30%mod)
Max. sensitivity -(output=20mV,30%mod)
sensitivity
SJ-L1
Supply Voltage,Vcc
Temperature Characteristics
2-.H
1MHZ Detection output,input 60dBji.
1kHz-30/imod
Input 60dBp,l kHz-30%mod
S/N,input 60dBn
Output 20mVsensitivity,lkHz-30%mocl Ambient Temperature,Ta
Lamp Sensitivity
level
level
-5-4-3-2-1 Capture Range
input onmod illation
Supply Voltage,Vcc
Supply Voltage,Vcc
1kHz 75kHz
input lOOdBp 90K/PiIo
Supply Voltage,Vcc
No.2887-7/13
LA1805
Q,.0
75kHz Dev. input 100dBp(10.7MHz) L+-R 0%/Pi
mono
stereo
Supply Voltage,Vcc
75kHz dev.
C[j-
Frequency,f Carrier Leak
monoraI(75kHz dev)
without de-emphasis
19kI Iz,38kHz carrier leak
38kHz carrier leak
Stereo (pilot modulation) "with de-emphasis
19kHz carrier leak
1kHz 75kHz
input lOOdBp
OdB: Mono output level
Supply Voltage ,VCC
Characteristics
<t.5V f=21MHZ
0*mO( Adj-m SOL.th atTHD
Input dBjj
dev. input lOOdBp ilot-10%
Frequency,f Dev.
input lOOdBp 90%y
Modulation,Dev.
Free-Running Frequency Drift Characteristic
input lOOdB^i
imo( iula ;ion
Ambient Temperature,Ta
Characteristics
Input
No.2887-8/13
1805.
Characteristic
voltage
Characteristics
Receiving Frequency,fr Banc! Test Circuit
Unit (capacitance:
Characteristics
Input dB/m
Characteristics
Vose
image Frequency
30dBtn)
20'w
Receiving Frequency,fr
Receiving Frequency,fr
So1-2
Characteristic
r=2^0kH2 m=1kHr
Input dB/m
Band Test Circuit
150|
Ll:HH-50161(Mitsumi) Tl:MA-7014(Mitsumi)
C?7|
Unit capacitance:
No.2887- 9/13
100k
100k
0.022U
BPLA1186
rprp
^1000p ~O.OA7ui100
jpi:iooop
777-
27p||
3.9k
^2200p Hftn
3.3U
SzO.lu
3.3u
-oVcc 4.5V
5TERBJ MONO
1500p
-1|-1
yNtfHm-
IfiJ [12}
0.047u
STEREO MONO
jt777
6800p 6800p
Note: constants parts changed from those 810.
Ll:TN-10896(Mitsumi) L2:YT-30196( Mitsumi) L3:YT-40001( Mitsumi)
YT-30224(Mitsumi) HW-6193(Mitsumi) YT-30103(Mitsumi)
Unit (resistance: capacitance:
5J-.
1805.
Sample Printed Circuit Pattern (See Sample Application Circuit.)
Unit (resistance: capacitance:
(Cu-foiled area) 120mm3
bp-20
5-60
186N LA1805 Overa
Characteristics
-100
f=98MHz Detecti putf ]%mo pmod
outf mtlkl
Noise voltage
LA1805 Overa
OOXfl
Characteristics
Input Voltage -dBi120
Input Voltage -dBn
Differences between LA1806 Same assignment
internal circuit (pin different shown below. curve opposite direction circuit which provided same band Japanese band.
Upper-hetcro)
LAI805 contains output load resistors. (Output load resistance SkQ)
JAPAN
(Lower -herero)
LA1806, output load resistors connectedexternally. graph demodulation output Ri/Rk)
Unit (resistance: below-
No.2887- 11/13
LA1805
LA1806 Characteristic
1kHz- 100%mod
External Load Resistance,RL
Coil Specifications antenna TN-10896(Mitsumi)
22TU9TT, 17T, 0.5(1
U260uH, Qo=330 200) <SHg)lal5ifl, Qo=3S0iil50)
HW-6216(Mitsumi)
(2KD58T T60P
HW-6193 (Mitsumi)
iiXD Qo=K0, L=l40uH
quadrature YT-30103(Mitsumi)
Qo;90,
HW-40184 (Mitsumi)
Qoi28,L=l.31uH
0237-1500(Sumida)
CTHZ)
Qo?20, 1=1.
YT-30117 (Mitsumi)
0X2) <2>4)
=95, L=UuH
LWbar antenna HH-50161 Mitsumi)
2158-4095-319A(Sumida)
dH?)
CD-(J) Qot<0, 1.4uH
(IHD 20OT
L=2.XmH, 1200
MA-7014(Mitsumi)
L=220uH, 0o=130
GmeNo.2887-12/13
products described contained herein intended surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment like, failure which directly indirectly cause injury, death property loss.
Anyone purchasing products described contained herein above-mentioned shall:
Accept full responsibility indemnify defend SANYO ELECTRIC CO., LTD., affiliates, subsidiaries distributors their officers employees, jointly severally, against claims litigation damages, cost expenses associated with such use: impose responsibility fault negligence which cited such claim litigation SANYO ELECTRIC CO., LTD., affiliates, subsidiaries distributors their officers employees jointly severally.
Information (including circuit diagrams circuit parameters) herein example only; guaranteed volume production. SANYO believes information herein accurate reliable, guarantees made implied regarding infringements intellectual property rights other rights third parties.
No.2887-13/13

Monolithic Linear No.2887B AM/FM-IF/MPX Tuner System ^for Ra

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