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PDF LA1823M Data sheet ( Hoja de datos )
| Número de pieza | LA1823M | |
| Descripción | Single-Chip Tuner ICs | |
| Fabricantes | Sanyo Semicon Device | |
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Ordering number : EN6854A
LA1823
LA1823M
Monolithic Linear ICs
Single-Chip Tuner ICs
for Use in Radio Cassette Recorder
Overview
The LA1823 and the LA1823M are single-chip tuner ICs that incorporate FM/AM and MPX circuits and support
electronic tuning. The built-in MPX-VCO allows these ICs to be adjustment-free and to require no external components.
Features
• AM, FM frontend/IF and MPX integrated in a single-chip.
• Built-in MPX VCO circuit
• Electronic tuning (AM oscillator output, AM/FM IF output)
• Adjustment-free FM detection (uses a ceramic discriminator)
• Packages : DIP24S (300mil) [LA1823]
MFP24S (300mil) [LA1823M]
Functions
AM : RF amplifier, mixer, oscillator, oscillator buffer, IF amplifier, detector, AGC, IF count buffer output.
FM-RF : RF amplifier, mixer, and oscillator.
FM-IF : IF amplifier, quadrature detector, S-meter, and IF counter buffer output.
MPX : PLL stereo decoder, stereo indicator, forced monaural, VCO on chip, Audio mute.
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Indicator drive current
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max
ILED
Pd max
Topr
Tstg
Pin 8
Ta ≤ 70°C
Conditions
Ratings
7.0
20
300
-20 to +70
-40 to +125
Unit
V
mA
mW
°C
°C
Any and all SANYO Semiconductor 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 Semiconductor representative
nearest you before using any SANYO Semiconductor products described or contained herein in such
applications.
SANYO Semiconductor 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 Semiconductor
products described or contained herein.
Downloaded from Elcodis.com electronic components distributor
N1506 MS PC B8-8120, B8-5863 No.6854-1/12
1 page  
LA1823, LA1823M
Sample Application Circuit Diagram
Downloaded from Elcodis.com electronic components distributor
No.6854-5/12
5 Page 
Continued from preceding page.
Pin
number
Function
21 VCC2
22 FM-RF output
24 FM-RF input
LA1823, LA1823M
Quiescent
voltage (V)
AM FM
4.5 4.4
Remarks
FM-FE block VCC
Power is supplied from pin 4 (VCC1) via
external resistor (10Ω)
4.5 4.4 Connect the FM-RF coil between this pin
and pin 21 (VCC2)
0 0.9
Rin = 1.8kΩ
23 GND2
0 0 FM-FE block ground
Equivalent circuit
R
21 4
22
24
Rin
21
FM Characteristics
0
--20 Signal
--40
AM out
--60
--80 VCC=4.5V
fc=98MHz
Noise
fm=1kHz, 22.5kHz dev
--100 AM=30%mod
--20 0
20 40 60 80 100
Input – dBµV EMF
AM Characteristics
0
VCC=4.5V
fc=1000kHz
fm=1kHz, 30%mod
--20
Signal
120
140
--40
--60
Noise
--80
--100
--20
0
20 40 60 80 100 120 140
Input – dB/m
Downloaded from Elcodis.com electronic components distributor
FM Characteristics
5
VCC=4.5V
fc=98MHz
fm=1kHz
4
3
2
1
THD(75k)
0 THD(22.5k)
--20 0 20 40 60 80 100 120 140
Input – dBµV EMF
AM Characteristics
5
VCC=4.5V
2.5
fc=1000kHz
fm=1kHz, 30%mod
4 2.0
3 1.5
2 1.0
1 VAGC
0.5
0
--20 0
0
20 40 60 80 100 120 140
Input – dB/m
No.6854-11/12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LA1823M.PDF ] | |
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