Overview
The LA7567B and LA7567BM are PAL/NTSC multi-
format audio VIF/SIF IF ICs that adopt a semi-
adjustment-free system. The VIF block adopts a technique
that makes AFT adjustment unnecessary by adjusting the
VCO, thus simplifying the adjustment steps in the
manufacturing process. PLL detection is adopted in the
FM detector to support multi-format audio detection. A
built-in SIF converter is included to simplify multi-format
system designs. A 5-V power-supply voltage is used to
match that used in most multimedia systems. In addition,
these ICs also include a buzz canceller to suppress Nyquist
buzz and provide high audio quality. The LA7567B and
LA7567BM feature improvements over the LA7567N and
LA7567NM in the audio and video signal-to-noise ratios
and the video signal amplitude.
Functions
[VIF]
VIF amplifier PLL detector BNC RF AGC
EQ amplifier AFT IF AGC Buzz canceller
[First SIF]
First SIF First SIF detector AGC
[SIF]
Multi-format SIF converter Limiter amplifier
PLL FM detector
Features
Both AFT and SIF inductors built in, thus making
adjustment of external inductance unnecessary.
A PAL/NTSC multi-format audio system can be
constructed easily.
Built-in buzz canceller for excellent audio performance.
VCC = 5 V, low power dissipation (250 mW)
Package Dimensions
unit: mm
3067A-DIP24S
unit: mm
3112A-MFP24S
0.48
(3.25)
3.3
3.9max
0.51min
21.0
(0.71)
1.78
0.25
7.62
6.4
1
12
24
13
0.95
0.9
Monolithic Linear IC
40703AS (OT) No. 6099-1/15
SANYO: DIP24S
[LA7567B]
112
24
13
12.5
(0.75)
1.0
0.15
0.35
5.4
7.6
0.63
1.7max
1.5
0.1
SANYO: MFP24S
[LA7567BM]
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
TV and VCR VIF/SIF IF Signal-Processing Circuit with
PAL/NTSC Multi-Format Audio Support
LA7567B, 7567BM
Ordering number : EN6099
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.