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LA1837 Datasheet

  • LA1837

  • Single-Chip Home Stereo IC with Electronic Tuning Support

  • 9頁

  • SANYO

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Ordering number : EN5688
Monolithic Linear IC
LA1837
Single-Chip Home Stereo IC with
Electronic Tuning Support
Overview
The LA1837 is a single-chip AM/FM IF and MPX IC that
supports electronic tuning and was developed for use in
home stereo systems. It is optimal for use in automatic
station selection systems that use the SD and IF counting
techniques.
Package Dimensions
unit: mm
3061-DIP30S
[LA1837]
Functions
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, S-
curve detector, IF buffer output
MPX: PLL stereo decoder, stereo display, forced mono,
VCO stop, post amplifier, audio muting, adjacent
channel interference rejection function
AM:
Features
鈥?On-chip MPX VCO (no external components required)
鈥?Adjacent channel interference rejection function
(third and fifth order)
鈥?Supports both the SD and the IF counting techniques.
鈥?The AM and FM SD sensitivities can be set independently.
鈥?The AM and FM output levels can be set independently.
鈥?Improved AM practical sensitivity and high-input
distortion characteristics
SANYO: DIP30S
Specifications
Maximum Ratings
at Ta = 25擄C
Parameter
Maximum supply voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
V
CC
max
Pd max
Topr
Tstg
Ta
鈮?/div>
70擄C
Conditions
Ratings
12
550
鈥?0 to + 70
鈥?0 to +125
Unit
V
mW
擄C
擄C
Operating Conditions
at Ta = 25擄C
Parameter
Recommended supply voltage
Operating voltage range
Symbol
V
CC
V
CC
op
Conditions
Ratings
9
7 to 11
Unit
V
V
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
82097HA(OT) No. 5688-1/9

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