Sanyo LA7449M Specifications
Ordering number:ENN5119
Monolithic Linear IC
LA7449, 7449M
Video Signal Processing IC
for VHS VCR Systems
Overview
The LA7449 and 7449M are video signal processing singlechip ICs that handle the PAL-G, B and I, 4.43 NTSC,
MESECAM and NAP-G, B and I formats. IC internal trimming is used to make the LA7449, 7449M completely adjustment free, and in combination with a special-purpose
CCD (thd LC89970, 89970M) they provide a significant
reduction in external components, including the glass delay line. Thus the LA7449, 7449M can significantly reduce the signal processing board manufacturing costs. Furthermore, the LA7449, 7449M support the NAP format
(NTSC to PAL conv ersion) that is becoming widespread in
Europe, China and other markets.
Features
• Completely adjustment free.
The AGC, carrier, deviation, and PB-Y level are adjustment free.
The YC record current can also be made adjustment free
by using the LA7411, 7416 as the head amplifier.
• Support for NAP and PAL color array correction.
Full modulation using a balanced modulator allows playback and conversion to PAL format of NTSC signals recorded on tape.
• Crosstalk exclusion in combination with a special-purpose CCD
Crosstalk can be excluded without using a glass delay
line by combining the LA7449, 7449M with a specialpurpose CCD (the LC89970, 89970M).
• Minimal number of external components.
New built-in components :
– Detail enhancer CR.
– C-trap in the Y low-pass filter.
– Playback C low-pass filter.
• High performance and multiple functions.
Linear phase picture controller.
Double high-pass noise canceller, high-speed AFC, DCC.
New built-in functions.
– NAP circuit.
– AVNS (advanced vertical noise suppressor).
– Automatic QH insertion.
– FM AGC.
• Miniature package (48-pin QIP or DIP).
Package Dimensions
unit:mm
3149-DIP48S
[LA7449]
48
1
1.78
2.53
unit:mm
3156-QIP48E
1.6
14.0
17.2
0.8
46.0
[LA7449M]
17.2
14.0
1.0
15.6
0.35
1.05
1.5
25
12
0.48
1.5
36
37
1.5
1.0
48
1.5
1
25
24
1.6
24
13
3.0max
SANYO : QIP48E
SANYO : DIP48S
0.15
0.1
2.7
15.24
4.25
0.51min
13.8
0.25
5.1max
3.8
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
O2500TN (KT)/62095HA (OT) No.5119–1/10
LA7449, 7449M
Functions
All VHS format VCR signal processing functions.
Luminance Chrominance
Video amplifier. 4.43 BPF Half H killer
Feedback clamp ACC amplifier. BGP generator
R/P YNR (AVNS) Main converter VCO
REC Pre LPF White/dark clip Killer
PB Sub LPF NAP DPLL
Main LPF ACC det. Killer det.
VCA 1.3M LPF Phase shifter
Sync separator VXO/XO Sub converter
4.2V regulator Side lock det. 5.06 BPF
3rd lock protector
Video AGC amplifier. NL emphasis Preamplifier. Burst gate amplifier.
Video AGC det. Main emphasis Burst emphasis (NTSC)
Detail enhancer FM modulator APC det.
1/2 fH carrier shift AFC det.
FM AGC amplifier. Drop out det. Pre amplifier. APC det.
FM AGC det. NL de-emphasis Burst de-emhasis (NTSC) ID det.
Double limiter Picture control PB amplifier DCC
FM demodulator Y/C mix Killer Trick det.
Double highpass noise canceller PAL burst sequence
QV/QH/character insert –Compensator
Main de-emphasis Carrier balancer
DOC Burst gate amplifier.
Specifications
Pin numbers are for the LA7449M
Maximum Ratings at Ta = 25˚C
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erutarepmetegarotSgtsT 051+ot04–
Note : * When mounted on a 70mm by 65mm, 1.5mm thickness Bakelite board. The value for the DIP package is 1150mW.
Operating Conditions at Ta = 25˚C
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Operating Characteristics at Ta = 25˚C, V
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2scitsiretcarahcCGA2CGAlangisoedivp-pV5.0metsyszH05:tupnI09.100.201.2p-pV
3scitsiretcarahcCGA3CGABd6desaercniCNYSylnohtliwmetsyszH05:tupnI555516596p-pVm
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tinU
Continued on next page.
No.5119–2/10
Continued from preceding page.
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Continued on next page.
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No.5119–3/10
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