IF Signal Processing Circuit
(A
2C PLL VIF + SIF) for TVs and VCRs
Overview
The LA7583 is a VIF + SIF IC that requires no adjustments. In
order to eliminate the need for adjustments in the VIF block, a
multi-network PLL has been developed and adopted for video
detection. In the SIF block, adjustments were eliminated by
using gyrator technology in the FM quadrature detector. In
addition to eliminating the need for adjustments, a buzz
canceller that suppresses Nyquist buzz has been built into the
LA7583 in order to provide excellent sound quality.
Features
.
Elimination of VCO, AFT, and SIF coils eliminates the need
for adjustments.
.
A variety of built-in filters.
.
Built-in buzz canceller results in excellent audio
characteristics.
Note: A
2C
Automatic Adjustment Control
AQT
Automatic Quadrature Tuning
Package Dimensions
unit : mm
3067-DIP24S
[LA7583]
0.48
3.25
3.3
3.9max
0.51min
21.2
0.81
1.78
0.25
7.62
6.4
1
12
24
13
0.95
SANYO : DIP24S
Functions
[VIF]
.
VIF amplifier
.
Multinetwork PLL
.
BNC
.
FAGC
.
Equalizer amplifier
.
AFT
.
IFAGC
.
Buzz canceller
.
AGC lag lead filter
.
Video driver
[1st SIF]
.
Preamplifier
.
1st SIF detector
.
AGC detector
.
Built-in AGC filter
[SIF]
.
Limiter amplifier
.
AQT detector (gyrator)
.
J/U switch
[mute]
.
Audio mute
.
AV mute
Ordering number: EN5177
Monolithic Linear IC
LA7583
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
83095HA(II) No.5177-1/16