LA1837M Datasheet, PDF (1/9 Pages) Sanyo Semicon Device – LA1837M

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