LA1837M Просмотр технического описания (PDF) - ON Semiconductor

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LA1837M

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

ON Semiconductor 

Ordering number : EN8271

LA1837M

Monolithic Linear IC

Single-Chip AM/FM Tuner IC

for Home Stereo Systems

http://onsemi.com

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 and IF counting techniques for

optimal implementation of automatic station selection.

Features

• 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.

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, 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

Specifications

Maximum Ratings at Ta = 25°C

Parameter

Symbol

Maximum supply voltage

Allowable power dissipation

VCC max

Pd max

Ta≤70°C*

Operating temperature

Topr

Storage temperature

Tstg

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

Conditions

Ratings

Unit

12

V

550

mW

-20 to +70

°C

-40 to +125

°C

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating

Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.

Semiconductor Components Industries, LLC, 2013

May, 2013

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

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