LA1837M_06 SANYO [Sanyo Semicon Device], LA1837M_06 Datasheet

LA1837M_06

Manufacturer Part Number

LA1837M_06

Description

Single-Chip AM/FM Tuner IC for Home Stereo Systems

Manufacturer

SANYO [Sanyo Semicon Device]

Datasheet

1.LA1837M_06.pdf (9 pages)

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LA1837M

Overview

Features

Functions

Specifications

Maximum Ratings at Ta = 25°C

*: Mounting board: 114.3×76.1×1.6mm glass epoxy board

Ordering number : EN8271

Maximum supply voltage

Allowable power dissipation

Operating temperature

Storage temperature

The LA1837M is a single-chip AM/FM tuner IC that provides AM and FM IF and multiplex decoding circuits for

electronic tuning and was developed for use in home stereo systems. It provides both SD and IF counting techniques for

optimal implementation of automatic station selection.

• On-chip MPX VCO circuit (no external components required).

• Adjacent channel interference rejection function (third order and fifth order).

• Supports both the SD and IF counting technique (built-in SD speedup function).

• The AM and FM SD sensitivity can be set independently.

• The AM and FM output levels can be set independently.

• Improved basic FM reception performance.

• 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, S curve detection, IF buffer output

• Multiplex stereo decoding: PLL stereo decoder, stereo indicator, forced monaural, VCO stop function, post amplifier,

audio muting, adjacent channel interference rejection function

Parameter

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.

V CC max

Symbol

Pd max

Topr

Tstg

Monolithic Linear IC

Single-Chip AM/FM Tuner IC for

Home Stereo Systems

Ta≤70°C*

Conditions

92706 / O3105 MS OT B8-3807 No.8271-1/9

-40 to +125

Ratings

-20 to +70

550

Unit

°C

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LA1837M_06 Summary of contents

Page 1

Ordering number : EN8271 LA1837M Overview The LA1837M is a single-chip AM/FM tuner IC that provides AM and FM IF and multiplex decoding circuits for electronic tuning and was developed for use in home stereo systems. It provides both SD ...

Page 2

Operating Conditions 25°C Parameter Symbol Recommended supply voltage V CC Operating supply voltage range Electrical Characteristics 25° 9.0V, in the specified circuit. Parameter Symbol [FM Mono Characteristics] fc ...

Page 3

Package Dimensions unit : mm 3073C Block Diagram LA1837M No.8271-3/9 ...

Page 4

Coil Specifications • AM oscillator (for the DUT) HW-50425 (Mitsumi Electric Co., Ltd.) • FM-DET 600BEAS-9715Z (Toko Electric Corporation) Pin Function Pin Pin No. Pin voltage input Vreg 2 AM mixer output ...

Page 5

Continued from preceding page. Pin Pin No. Pin voltage 10 AM narrow band 1.3V ceramic filter connection 11 FM S-meter 0V output 12 AM S-meter 0V (AM) output sensitivity adjustment 13 AM/FM IF buffer 0V output, Output control ...

Page 6

Continued from preceding page. Pin Pin No. Pin voltage 24 AM detector 0V (FM) output 0.5V (AM AGC 0V (FM) 0.5V (AM) 26 AFC Vreg input Vreg 28 REG Vreg 29 OSC Vreg 30 Oscillator ...

Page 7

LA1837M No.8271-7/9 ...

Page 8

LA1837M No.8271-8/9 ...

Page 9

Test Circuit Specifications of any and all SANYO Semiconductor products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the ...

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