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LA1835

Home Stereo Single-Chip Tuner IC with Electronic Tuning Support

SANYO -> Panasonic 

Ordering number : EN4159B

Monolithic Linear IC

LA1835

Home Stereo Single-Chip Tuner IC

with Electronic Tuning Support

Overview

The LA1835 is an AM, FM IF and MPX single-chip tuner

IC that supports electronic tuning. It was developed

specifically for use in home stereo products and is optimal

for products with auto-seek systems, since it combines SD

and IF counting in its auto-seek implementation.

Furthermore, since the FM detector and MPX VCO

circuits are adjustment free, adoption of the LA1835 can

reduce the number of adjustment steps in the production

line.

Functions

• AM: RF amplifier, mixer, oscillator (with ALC), IF

amplifier, detector, AGC, oscillator buffer,

tuning indicator (narrow-band SD), IF buffer

output, stereo IF output

• FM IF: IF amplifier, quadrature detector, band muting,

tuning indicator, IF buffer output, S-meter

• MPX: PLL stereo decoder, stereo indicator, forced

mono, VCO stop function, adjacent channel

interference rejection function (114 kHz), post-

amplifier with muting function

Features

• Significant reduction in the number of manufacturing

adjustment steps

FM detector: Adjustment free (using a ceramic

discriminator)

MPX VCO: Adjustment free (using a ceramic

resonator)

• Tuning indicator output provided. (This pin can also be

used as a narrow band stop signal and as a muting drive

output.)

• Adjustable FM stop sensitivity and bandwidth

• Built-in AM local oscillator buffer

• Support for AM low band cut control

• Adjustable AM stop sensitivity

Package Dimensions

unit: mm

3196-DIP30SD

[LA1835]

SANYO: DIP30SD

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 Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

11795TH (OT) No. 4159-1/14

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