FM IF System with Quadrature Detection for Car Radios

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概览

LA1140 is an IF system IC with quadrature detection designed for FM car stereo receivers. It features versatile muting characteristics and allows receiver designers to realize the muting performance according to their design concept. Since the muting characteristics can be varied with a switch or a semi-fixed resistor, DX-Local switching will be accomplished with ease.

  • Versatile muting
  • High limiting sensitivity (25 dB typ. with muting off)provides a fine quieting characteristic
  • High S/N (78 dB typ.)
  • Low distortion (0.05% typ.) avaiable if used with double-tuned circuits
  • Good AMR (63 dB typ. with 6 stages of differential IF amplifiers).
  • Signal meter drive output proportional to the input signal strength in dB (suitable to control multiplex IC LA3370).

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fs Max (kHz)

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LA1140-E

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Obsolete

CAD Model

Pb

A

H

P

SIP-16 / SIP-16Z

NA

0

FNFLD

20

N

FM IF

-

-

460

7.5

16

-20

70

Price N/A

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