Monolithic Linear LA1805 AM/FM-IF/MPX Tuner System Radio-Cas

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Monolithic Linear LA1805 AM/FM-IF/MPX Tuner System Radio-Cas

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Ordering number EN2887B
Monolithic Linear
LA1805
AM/FM-IF/MPX Tuner System Radio-Casette Recorders, Music Centers
Overview
Package Dimensions
LA1805 characteristics-improved version unit LA1810, with same assignment package 3067-DIP24S those LA1810. Improvements made following point Separation (35dB48dB) dependence freerunning frequency (Sep Characteristic page main distortion (0.8%0.45%). detection output (approximately increased). constants five external parts changed shown page
[LA1805]
7.62
21.2
Functions
FM-IF amp, quadrature detector, soft muting, tuning indicator. stereo decoder, stereo indicator, forced monaural, stop. amp, MIX, (with ALC), amp, detector, AGC, tuning indicator.
0.51min
3.25 3.9max
0.81
1.78
0.48
0.95
SANYO DIP24S
Features
FM/AM/MPX functions contained single chip. Minimum number external parts required. On-chip muting function. High sensitivity. Less carrier leak MPX.
Specifications Maximum Ratings Ta=25°C, specified Test Circuit.
Parameter Maximum supply voltage Maximum supply current Flow-in current (Indicator drive current) Flow-out current Allowable power dissipation Operating temperature Storage temperature Topr Tstg Ta70°C +125 Symbol ILED Conditions Pins Pins 3+20+21 Pins Ratings Unit
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, Chome, Ueno, Taito-ku, TOKYO, JAPAN 12798HA (KT)/D0994JN/4030MO/N148YT, No.2887-1/13
0.25
LA1805 Operating Conditions Ta=25°C
Parameter Symbol Conditions Ratings Unit Recommended operating voltage Operating voltage range
Note 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 Ta=25°C, VCC=4.5V, Test Circuit
Parameter Symbol Conditions Ratings 0.45 0.45 input VIN=23dBµ, mod. VIN=80dBµ, mod. VIN=23dBµ, mod. VIN=80dBµ, mod. VIN=80dBµ, mod. VIN=100dBµ, mod. IL=1mA 0.45 14.5 Unit
characteristics (Mono) fc=10.7MHz, fm=1kHz] Quiescent current -3dB sensitivity Demodulation output Channel balance Total harmonic distortion Signal noise ratio sensitivity Separation Stereo distortion level level Quiescent current Demodulation output Signal noise ratio Total harmonic distortion sensitivity Icco -3dBL.S. C.B. VLED (Main) VLED-on VLED-off Icco S/N1 S/N2 THD1 THD2 VLED input Referenced VIN=100dBµ, 100%, down VIN=100dBµ, 100% mod. VIN=100dBµ, 100% mod. VIN=100dBµ, 100% mod. VIN=100dBµ, 100% mod. IL=1mA
characteristics (Stereo) fc=10.7MHz, fm=1kHz, L+R=90%, pilot=10%, VIN=100dBµ]
characteristics fc=1000kHz, fm=1kHz]
Note fully careful dielectric breakdown.
Equivalent Circuit Block Diagram
No.2887-2/13
LA1805 Test Circuit
Polystyrene film capacitor Differs from application circuit where front used. (See Sample Application Circuit page 10.)
LA1805
Unit (resistance capacitance
Forced monaural mode. Figures show cause forced monaural mode entered. Connect through resistor 100k. (Turn Figure Connect through resistor 47k. (Turn Figure
Figure Forced Monaural Mode Setting Method
Figure Forced Monaural Mode Setting Method
Forced Monaural Mode Setting Resistance FreeRunning Frequency
Free-running frequency
Either above-mentioned causes forced monaural mode entered. this case, does stop operating. resistance decreased, internal bias will vary when turned This data shown Figure
Figure
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.
Make wiring short possible.
Free-running frequency measurement adjustment Either following methods used measure free-running frequency. Connect frequency counter through high input impedance amplifier. Connect connection point semifixed resistor connected fixed resistor frequency counter through resistor 240k greater.
Figure
Figure
Figure error changes with resistor value shown Figure
Measured error,
input 100dBµ Nonmodulation Resistor value,
Figure When setting free-running frequency, following must noted. Apply 10.7MHz 100dBµ nonmodulation carrier input signal 76kHz±50Hz with tuning indicator lighted. Separation setting capacitor separation characteristic LA1805 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.
Separation,
Free-running frequency,
Figure
No.2887-4/13
LA1805
muting external resistor connected used vary muting level (Figure abnormal sound time side peak reception mode reduced weak signal muting.
LA1186N+LA1805 Muting Characteristics LA1186N+LA1805 Attenuation Detuning Frequency
Noise, Output
Noise
Input
Detuning frequency,
Figure Figure following method used change sensitivity mode (Figure 11). data sensitivity setting resistance sensitivity shown Figure
Sensitivity
Figure Method Change Sensitivity Mode
Unit (capacitance
sensitivity
Reference (R=Open) Resistance,
Figure AM-FM selection mode entered with open shown Figure When made same potential terms mode entered. should noted that dynamic range narrowed whether potential lower higher than that Figure noise appears detection output when tuning goes mode, connect capacitor across eliminate noise.
Attenuation
No.2887-5/13
LA1805
Characteristics Total harmonic distortion, Characteristics Total harmonic distortion, Noise, Detection output Demodulation output
Noise, output, Demodulation output
Detection output
outp
Noise
Input Selectivity Characteristic Output 20mV const.
Input dB/m Fidelity Characteristics input const. Total harmonic distortion, Modulation frequency Reception Characteristic Tracking each frequency
interferen
Detuning frequency, Whistle Characteristic
tput (1kHz30% mod)
Attenuation
Detection
Sensitivity dB/m, Interference ratio
Detection output, Whistle output
Response
hist
Image interfe frequency rence Usable sensitivity
Max. sensitivity (1kHz-30% mod, output=20mV)
Input dB/m
Receiving frequency
No.2887-6/13
LA1805
Characteristics Total harmonic distortion, Sensitivity dB/m Characteristics Total harmonic distortion,
Demodulation output Detection output
Detection output
Detection output (100%
Sensitivity
Max. sensitivity (output=20mV, mod)
sensitivity
sensitivity (100% mod) Supply voltage,
Supply voltage, Total harmonic distortion, Output Sensitivity Output Temperature Characteristics Total harmonic distortion,
Temperature Characteristics
Demodulation output, input=10 0dBµ
Detection output, input=60dBµ
THD, input=10
Input S/N, input=60dBµ
0dBµ 1kHz-30
S/N, input=100dBµ
THD, input=100dBµ Sensitivity
sensitivity
S/N=20dB sensitivity, 1kHz-30%
sensi
tivity
Output 20mV sensitivity, 1kHz-30% Ambient temperature, Lamp Sensitivity
Ambient temperature,
Pilot modulation
Pilot level
level
level
Capture range input Nonmodulation
Supply voltage,
Separation,
input 100dBµ
Supply voltage,
Supply voltage,
No.2887-7/13
LA1805
Total harmonic distortion,
input 100dBµ (10.7MHz) Separation,
input 100dBµ
Supply voltage,
Frequency,
Total harmonic distortion,
input 100dBµ
Total harmonic distortion,
input 100dBµ
Frequency, Carrier Leak Free-running frequency drift,
Modulation, Dev. Free-Running Frequency Drift Characteristic
without de-emphasis carrier leak
input 100dBµ Nonmodulation
Carrier leak
carrier leak
Stereo (pilot modulation) with de-emphasis
carrier leak
input 100dBµ mono output level Supply voltage, Characteristics
Ambient temperature, Characteristics Noise voltage, Detection output
Total harmonic distortion,
Detectio
tput
mod)
Pin4 voltage,
Adjust that minimized.
input
input
No.2887-8/13
LA1805
Characteristic voltage Oscillation voltage, VOSC Interference ratio Sensitivity Characteristics
Usable sensitivity
Max.
sitivity
inte rfer
Receiving frequency,
Receiving frequency,
Band Test Circuit
Unit (capacitance YT-30117 (Mitsumi), 2158-4095-319A (Sumida) HW-40184 (Mitsumi), 0237-1500 (Sumida)
Characteristics Noise output, Detection output Total harmonic distortion,
Characteristics
voltage,
Demodu
lation
tput
input dB/m Characteristics Sensitivity dB/m Interference ratio
input dB/m
Band Test Circuit
Oscillation voltage, VOSC
able siti vity
freque Image rence inte
Max.
nsitivity
(Mitsumi) (Mitsumi)
Receiving frequency,
Unit (capacitance
No.2887-9/13
LA1805
Sample Application Circuit LA1186N+LA1805 FM/MW
(Mitsumi) (Mitsumi) (Mitsumi)
Note constants parts changed from those LA1810.
(Mitsumi) (Mitsumi) (Mitsumi) (Mitsumi)
No.2887-10/13
Unit (resistance capacitance
LA1805 Sample Printed Circuit Pattern (See Sample Application Circuit.)
(Cu-foiled area) Unit (resistance capacitance LA1186N LA1805 Over Characteristics Detection output, Noise voltage Total harmonic distortion, LA1186N LA1805 Over Characteristics
Detection output
output
Noise voltage
input voltage
input voltage
Differences between LA1805 LA1806 Same assignment internal circuit (pin different shown below. curve opposite direction circuit which provided same band Japanese band.
LA1805 contains output load resistors (Output load resistance=6.8k)
LA1806, output load resistors connectedxternally. graph demodulation output (RR) shown below. No.2887-11/13
LA1805
LA1806 Characteristic
Demodulation output mVrms
External load resistance,
Coil Specifications
antenna TN-10896 (Mitsumi)
HW-6215 (Mitsumi)
HW-6194 SFU-450B
HW-6193 (Mitsumi)
quadrature YT-30103 (Mitsumi)
HW-40184 (Mitsumi)
0237-1500 (Mitsumi)
YT-30117 (Mitsumi)
2158-4095-319A (Sumida)
antenna HH-50161 (Mitsumi)
MA-7014 (Mitsumi)
No.2887-12/13
LA1805
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 responsibilty 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. This catalog provides information January, 1998. Specifications information herein subject change without notice.
No.2887-13/13

Monolithic Linear LA1805 AM/FM-IF/MPX Tuner System Radio-Cas

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