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LA75691 Datasheet

  • LA75691

  • IF Signal-Processing IC for PAL/NTSC Multichannel Audio TV a...

  • 13頁

  • SANYO

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Ordering number : EN5734
Monolithic Linear IC
LA75691
IF Signal-Processing IC for PAL/NTSC Multichannel
Audio TV and VCR Systems
Overview
The LA75691 is a PAL/NTSC multichannel audio
VIF/SIF signal-processing IC that makes the minimum
number of adjustments possible. The system is designed
so that VCO adjustment makes AFT adjustment
unnecessary, thus simplifying the adjustment steps in end-
product manufacturing. PLL detection is adopted in the
FM detector, allowing the LA75691 to support
multichannel detection for the audio signal. In addition, it
also incorporates a buzz canceller that suppresses Nyquist
buzz for improved audio quality.
Package Dimensions
unit: mm
3067-DIP24S
[LA75691]
Functions
[VIF Block]
鈥?PLL detector with minimum number of adjustments
鈥?AFT
鈥?Equalizer amplifier
鈥?RF AGC
[First SIF BLOCK]
鈥?First SIF detector
鈥?HPF
[SIF Block]
鈥?PLL-based FM detector
[Muting Block]
鈥?AV muting
SANYO: DIP24S
Features
鈥?Excellent buzz and buzz/beating characteristics provided
by a PLL detection technique that includes a buzz
canceller.
鈥?The second IF AGC filter is built in.
鈥?No coils are used in the AFT and SIF circuits, making
them adjustment free.
Allowable power dissipation, Pd max 鈥?W
Ambient temperature, Ta 鈥?擄C
Any and all SANYO 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鈥檚
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO 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 products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
90898RM (OT) No. 5734-1/13

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