LA1838

Manufacturer Part NumberLA1838
DescriptionSingle-Chip Home Stereo IC with Electronic Tuning Support
ManufacturerSanyo Semiconductor Corporation
LA1838 datasheet
 


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Ordering number : EN5888
Overview
The LA1838 is designed for use in home stereo systems
and is a single-chip tuner IC that provides electronic
tuning functions for AM, FM IF, and MPX reception. It is
optimal for use in products that adopt an automatic tuning
system based on an IF count.
Functions
• AM:
RF amplifier, mixer, oscillator, IF amplifier,
detector, AGC, oscillator buffer, S-meter,
narrow-band SD, IF buffer
• FM IF: IF amplifier, quadrature detector, S-meter, SD
(signal detection), S-curve detection, IF buffer
output
• MPX: PLL stereo decoder, stereo display, forced
monaural, VCO stop, post amplifier, audio
muting, adjacent channel interference rejection
function
Pd max - Ta
600
550
500
400
300
200
100
0
-40
-20
0
20
Ambient temperature, Ta — C
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.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Single-Chip Home Stereo IC with Electronic
Features
• Integrated MPX VCO (External components are no
longer required.)
• Built-in adjacent channel interference rejection function
(third and fifth order)
• Adjustment-free FM detector circuit (Uses a ceramic
discriminator.)
• The AM and FM SD sensitivities can be set
independently.
• The AM and FM output levels can be set independently.
• Improved useable AM sensitivity and strong field
distortion characteristics.
Package Dimensions
unit: mm
3061-DIP30S
30
1
1.15
40
60
80
100
Monolithic linear IC
LA1838
Tuning Support
[LA1838]
16
15
27.2
0.48
0.95
1.78
SANYO: DIP30S
40999RM (OT) No. 5888-1/9

LA1838 Summary of contents