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Sanyo - IF Signal-Processing IC for PAL/NTSC Multi-System Audio TV and VCR Products

Numéro de référence LA7565B
Description IF Signal-Processing IC for PAL/NTSC Multi-System Audio TV and VCR Products
Fabricant Sanyo 
Logo Sanyo 





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LA7565B fiche technique
Ordering number :EN5636
Monolithic Linear IC
LA7565B, 7565BM
IF Signal-Processing IC for PAL/NTSC Multi-System
Audio TV and VCR Products
Overview
The LA7565B/M is a PAL/NTSC multi-system audio
VIF/SIF signal-processing IC that adopts 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.
Functions
[VIF Block]
• Minimal adjustment PLL detector
• AFT
• RF AGC
• Equalizer amplifier
• SIF converter
[First SIF Block]
• First SIF detector
• Inter/split switch
• HPF
[SIF Block]
• PLL type FM detector
[Mute Block]
• AV mute
Package Dimensions
unit: mm
3067-DIP24S
[LA7565B]
unit: mm
3112-MFP24S
[LA7565BM]
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.
SANYO: DIP24S
SANYO: MFP24S
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
83097HA(OT) No. 5636-1/16

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