LA7565E Datasheet, PDF (1/18 Pages) Sanyo Semicon Device – IF Signal-Processing IC for PAL/NTSC Multi-System Audio TV and VCR Products

Ordering number :ENN6100A
Monolithic Linear IC
LA7565E, 7565KM
IF Signal-Processing IC for PAL/NTSC Multi-System
Audio TV and VCR Products
Overview
The LA7565E and LA7565KM are PAL/NTSC multi-
system audio VIF/SIF signal-processing ICs that adopt a
minimal-adjustment technique. The VIF circuit adopts a
minimal-adjustment technique in which AFT adjustment is
made unnecessary by VCO adjustment to simply end
product adjustment. The FM detector circuit uses PLL
detections to support multi-system audio detection. Since
the LA7565BM include an SIF converter on chip, it is easy
to implement multi-system audio. In addition, it also
includes a buzz canceller that suppresses Nyquist buzz to
achieve improved audio quality. The LA7565G and
LA7565KM feature improvements over the LA7565B and
LA7565BM in the FM low-range frequency characteristics,
vertical synchronization buzz, and AFT drift.
Functions
[VIF Block]
• PLL detector
• AFT
• RF AGC
• Buzz canceller
• Equalizer amplifier
• SIF converter
• VIF amplifier
• IF AGC
[First SIF Block]
• First SIF detector
• First SIF amplifier
[SIF Block]
• PLL type FM detector
• Limiter amplifier
Features
• Allows the use of a switch circuit to switch between
spilt and intercarrier operation.
• Improved buzz and buzz beat characteristics provided by
a PLL detector plus buzz canceller system.
• The IF AGC second filter is built in.
• PAL/NTSC multi-system audio can be implemented
easily.
• Adjustment-free circuit design that does not require AFT
and SIF coils.
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’s
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 Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
40703AS (OT) No. 6100-1/18