Page 1
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.
Monolithic Linear IC
Sigle-Chip Signal Processor
for Color TV Use
Ordering number:ENN3343A
LA7680, 7681
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Overview
The LA7680 and LA7681 signal processors provide all the
components required to decode PAL or NTSC Color television signals. On-chip circuits include VIF, SIF, a video
processor, a chroma demodulator, and deflection drivers.
The self-adjusting signal processors support vertical field
scanning rates of both 50 and 60Hz, allowing the LA7837
and LA7838 vertical output drivers to maintain a constant
picture height.
The LA7681 replaces the LA7680’s G-Y output at pin 22
with a color contrast signal for input to a SECAM chroma
demodulator. This contrast signal is f ix ed at the maxim um.
The LA7680/7681 is available in 48-pin shrink DIPs.
Features
• Minimized external components.
• 48-pin shrink DIP.
VIF/SIF
• High-gain VIF amplifier.
• Fast-response automatic gain control (AGC).
• No delay between audio input and output.
• Muting for both audio and video signals or for audio
alone.
Video processor
• On-chip two-dimensional differential circuit.
• Variable current transfer.
• 7MHz bandwidth.
Chroma demodulator
• PAL and NTSC system compatible.
• Optimized demodulation angles and ratios.
• High performance burst cleaning filter and ACC/killer
detector.
• On-chip tint circuit (NTSC only).
Deflection drivers
• Adjustment-free vertical or horizontal sync hronization.
• Two-stage automatic frequency control.
• Adjustable separation sensiti vity for v ertical synchronization.
• Fixed picture height for both PAL and NTSC.
• Fixed picture height.
Package Dimensions
unit:mm
3149-DIP48S
[LA7680, 7681]
48
2.53
1
1.78
0.48
46.0
1.05
25
13.8
15.24
24
4.25
5.1max
3.8
0.51min
SANYO : DIP48S
0.25
30801TN (KT)/32593TS/6290TA KI 8-6402, 6403 No.3343–1/10
Page 2
LA7680, 7681
Specifications
Maximum Ratings at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovtupnI
tnerructupnII
noitapissidrewopelbawollAxamdP 53.1W
tnerructupniPBF
egatlovtupniPBFV
erutarepmetgnitarepOrpoT 56+ot01–
erutarepmetegarotSgtsT 051+ot55–
Recommended Operating Conditions at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovylppuS
tnerrucylppuSI
egnaregatlovgnitarepO
egnartnerrucgnitarepOI
V31xam 21V
V11xam 21V
xam 61Am
52
I62xam 5Am
I42xam 01Am
V
V
V31po 01ot8V
V11po 01ot8V
Ta≤65˚C
nim 5–V
62
31
11
52
po 61ot01Am
52
˚C
˚C
9V
9V
31Am
Operating Characteristics at Ta = 25˚C, VCC=V13=V11=9V, ICC=I25=13mA
retemaraPlobmySsnoitidnoC
]scitsiretcarahcylppuS[
egatlovylppuslatnoziroHV
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zHM9.83=pf]scitsiretcarahcFIV[
egatlovtuptuooediVV
egatlovtuptuoTFAV
egatlovCGAFRmumixaMV
egatlovCGAFRmuminiMV
ytivitisnestupnIiV
egnarCGARGytivitisnestupnissel,)p-pV8.0=oV(tupnimumixaM0686Bd
tupnimumixaMxamiVtuptuooedivBd1+gnitarenegleveltupniFIV001701µBd
edutilpmatuptuooediVV
niaglaitnereffiDGDDOMoediv%5.78,µBd08=iV0.301%
esahplaitnereffiDPDDOMoediv%5.78,µBd08=iV0.301
oitaresion-ot-langisoediVN/Sgol02,µBd08=iV7435Bd
levelpitlangiscnySV
citsiretcarahcycneuqerFcftuptuooedivBd3–gnitarenegycneuqerF701zHM
noitaludomretniFIVI
egatlovtuptuoTFAmumixaMV
egatlovtuptuoTFAmuminiMV
ytivitisnesrotcetedTFAfSseicneuqerffoegnararevo,µBd08=WC530609
egatlovgnihctiwstaefedTFAV
dlohserhtesionkcalBV
zHM5.5=sf]scitsiretcarahcFIS[
egatlovgnitimilFISmiliVtuptuooedivBd3–gnitarenegleveltupniFIS5425µBd
egatlovtuptuorotcetedMFV
noitrotsidtuptuorotcetedMFDHT,µBd001=iV ∆ zHk03±=f4.00.1%
noitcejerMARMAµBd001=iV3465Bd
niagegatlovreifilpmaFAG
egatlovtuptuoreifilpmaFAmumixaMV
elbairavyllacinortcelerofnoitaunettamumixaM
srotsiser
52
31+11
24
44
H64
L64
24O
PIT24
V
70.1
H44
L44
WSTFA
HTB
1O
FA
xam
5O
TTAzH004=f,smrVm002=iV0708Bd
stupnionhtiW2.46.40.5V
stupnionhtiW8.22.47.5V
nim=RV,CGAFR,µBd58=WC6.70.83.8V
xam=RV,CGAFR,µBd58=WC010.03.0V
noitaludom%04
DOM%87=MA,µBd08=iV7.10.23.2p-pV
1.43 (Vp-p)
noise (Vrms)
µBd08=WC0.23.26.2V
V/
zHM34.4
noitrotsid
zHM70.1
,µBd001=iV ∆ zHk03±=f084086088smrVm
FM : ∆f=30kHz
AM : 30%
µBd08=iV,5324Bd
langispeewstaderusaeM0.10.5V
langispeewstaderusaeM2.15.18.1V
zH004=f,smrVm001=iV810222Bd
sgnitaR
nimpytxam
0.75.70.8V
09011041Am
htiwtuptuooedivp-pV8.0gnitarenegleveltupniFIV
seicneuqerffoegnararevo,µBd08=WC0.83.87.8V
seicneuqerffoegnararevo,µBd08=WC2.04.09.0V
tuptuoreifilpmaFA%01gnitarenegleveltuptuO
036324µBd
0.28.2smrV
tinU
˚C
zHk/Vm
Continued on next page.
No.3343–2/10
Page 3
Continued from preceding page.
retemaraPlobmySsnoitidnoC
]scitsiretcarahcoediV[
egnarrenetfosoediV
egnarreneprahsoediV
niagegatlovoediVVG
gnittesretneclortnoctsartnoCC
egnarlortnoctsartnoC
lortnocssenthgirB
citsiretcarahcycneuqerfoediVf
etarrefsnarttnerructceriDR
egnartsartnocroloc0867AL
egnarni-llupCPA
]scitsiretcarahcamorhcLAP[
gnittesretneclortnoctsartnoCnecCE
citsiretcarahcedutilpmaCCA
soitartupuorotaludomeD
elgnanoitaludomeD
tuptuoecnanimorhcmumixaMhcE
tuptuorotaludomedmumixaMxamcE
tniopreggirtrelliKpnokE53–13–72–Bd
gnittesretneclortnoctsartnoCNneccE
citsiretcarahcedutilpmaCCA
citsiretcarahcesahpCCA
gnittesretneclortnoctniTT
egnartniT
oitartuptuorotaludomeD
elgnarotaludomeD
tniopreggirtrelliKE
tuptuorotaludomedmumixaMxamcE
LA7680, 7681
∆ tfoS
∆ prahS
V4
NEC
∆C
V
RB
H
B
NECr
RB
L
V
]scitsiretcarahcamorhcCSTN/LAP[
eudiserecnanimorhclortnocroloCE
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egatlovCDtuptuorotaludomeDV
ecnereffidegatlovCDtuptuorotaludomeD
egatlovegakaelreirractuptuorotaludomeDracE 3.0p-pV
]scitsiretcarahcamorhcCSTN[
CD
nim
C
∆C
C
Y-C
∆V
Y-C
∆f
CPA
p1MCCABd6+3–03+Bd
p2MCCABd02–5–1–1+Bd
pR/B)1867ALdna0867ALhtobotnommoC(05.187.100.2
pR/G)ylno0867AL(langisY-BonhtiW65.0–15.0–64.0–
pB/G)ylno0867AL(langisY-RonhtiW12.0–91.0–71.0–
∠ pBR
∠ BR
∠ BG
∆T
1MCCA
2MCCA
1PCCA
2PCCA
NEC
B/R
N
B/G
N
N
N
Bd6+3–03+Bd
N
N
Bd6+3–03+
N
N
NNOK
N
V0ot4,rotsiser
V9ot4,rotsiser
V6rotsiser
V9ot3rotsiser
tupniesacriatsp-pVm0028839%
V9rotsiserelbairavtsartnoc
V6rotsiserelbairavtsartnoc
V0rotsiser
V0rotsiser
V9rotsiserelbairavtsartnoc
V9rotsiserelbairavtsartnoc
Bd02–5–1+Bd
Bd02–7–7+
V5.4rotsiserelbairavtnittaegatloV
V5.4rotsiserelbairavroloctaegatloV
V6rotsiserelbairavtsartnoctaegatloV
V5.4rotiserelbairavroloctaegatloV
V6rotsiserlebairavtsartnoctaegatloV
)0867AL(42.03.083.0
)0867AL(131–121–111–
V9rotsiserelbairavtsartnoc
sgnitaR
nimpytxam
elbairavenotoedivtaegatlov,p-pVm001,zHM2=f
elbairavenotoedivtaegatlov,p-pVm001,zHM2=f
elbairavtsartnoctaegatlov,p-pVm001,zHk001=f
rotsiserlebairavenotoedivtaegatlov,V9rotsiser
elbairavtsartnoctaegatlov,p-pVm001,zHk001=f
elbairavtsartnoctaegatlov,p-pVm001,zHk001=f
V2rotsiserelbairavssenthgirbtaegatloV8.5V
V5.4rotsiserelbairavssenthgirbtaegatloV6.21.36.3V
V7rotsiserelbairavssenthgirbtaegatloV 2.1V
taegatlov,V6rotsiserelbairavtsartnoctaegatloV
nwodBd3,V4rotsiserelbairavenotoediv
,p-pV5.2=Y-BrotsiserelbairavroloctaegatloV
V9ot3:rotsiserelbairavtsartnoctaegatlov
taegatlov,V5.4rotsiserelbairavroloctaegatloV
elbairavroloctaegatloV.ylnoslangistsrubroF
elbairavroloctaegatloV.ylnoslangistsrubroF
.)0867AL(V5.4:rotsiserelbairavroloctaegatloV
)1867AL(V6:rotsiserelbairavtsartnoctaegatloV
taegatlov,V9rotsiserelbairavroloctaegatloV
taegatlov,V9rotsiserelbairavroloctaegatloV
)0867AL(V5.4rotsiserelbairavroloctaegatloV
)1867AL(V6rotsiserelbairavtsartnocaegatloV
V9ot5.4ot0rotsiserelbairavtnittaegatloV
taegatlov,V9rotsiserelbairavroloctaegatloV
6–4–2–Bd
70131Bd
710232Bd
54.075.096.0p-pV
022242Bd
57 zHM
roloctaegatlov,V0rotsiserelbairavroloctaegatloV
5.81025.12Bd
8.50.61.6V
7.42.57.5V
003–0003+Vm
005±zH
0.15.10.2p-pV
9.16.23.3p-pV
580959
0.15.10.2p-pV
4.30.4p-pV
7.01.15.1p-pV
3.18.13.2p-pV
9–3+51+
04±
18.009.089.0
0969201
83–43–03–Bd
8.24.3p-pV
tinU
03p-pVm
˚C
˚C
˚C
˚C
˚C
˚C
˚C
Continued on next page.
No.3343–3/10
Page 4
Continued from preceding page.
retemaraPlobmySsnoitidnoC
]scitsiretcarahcnoitcelfeD[
)zH05(
)zH06(
)zH06(
)zH05(
leveleslupgniknalblacitreVV
htdiwesluptupuolacitreVP
egatlovtupuolacitreV
ecnadepmi
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VesluptuptuolacitreV
CC
Vno
CC
AFC 2 FBP peak level
level
egnarni-lluplatnoziroHLLUPHfzHk086.51morfnoitaiveD054±zH
VesluptuptuolatnoziroH
CC
leveltupnihctiwsRCVRCV 3.10.2V
htdiwesluptuptuolatnoziroHP
esahpesluptuptuolatnoziroH
htdiweslupetagtsruBP
esahpeslupetagtsruBdT
egatlovtuptuo,zH06/05
egatlovtupni,zH06/05
LA7680, 7681
egatlovtupnirotarapesnoitazinorhcnySV
)zH05(ycneuqerfgninnur-eerflacitreVT
)zH06(ycneuqerfgninnur-eerflacitreVT
ycneuqerfnoitazinorhcnyslacitrevmumixaM
ycneuqerfnoitazinorhcnyslacitrevmumixaM
ycneuqerfnoitazinorhcnyslacitrevmuminiM
ycneuqerfnoitazinorhcnyslacitrevmuminiM
)zH05(htdiweslupgniknalblacitreVP
)zH06(htdiweslupgniknalblacitreVP
daolreggirtlanretxenoitcelfedlacitrreV
noitazinorhcnyscitamotuanoitcelfedlacitreV
levelgnitratsS
noitaivedycneuqerfgninnur-eerflatnoziroH
ecnednepedycneuqerfgninnureerflatnoziroH
levelgnitratsHS
dlohserht,rotcetednoitazinorhcnyslatnoziroH
CDS
05eerfV
06eerfV
T
05xamV
T
06xamV
T
06nimV
T
05nimV
LBVH
05KLBW
06KLBW
TUOVW
V
HTUO
V
MTUO
V
LTUO
R
RT
V
SAS
VV
∆ Hf
∆ VHf
H
H
H
V
V
V
CC
52
V
PBF
H
TUOHW
FP
NECP
RP
PGBW
PGB
niocH2.45.48.4V
05
06
06niV 7.8V
05niV51.0V
zHk086.51morfnoitaiveD001–0001+zH
)eulavecnerefer(V6.6=2zH
sgnitaR
nimpytxam
0.63.66.6V
5.213H
5.262H
ylnolangisnoitazinorhcnyslatnozirohhtiW753H
ylnolangisnoitazinorhcnyslatnozirohhtiW792H
522H
962H
0.75.7V
5.12H
5.71H
5.8H
7.563.6V
3.46.49.4V
5.26.3kΩ
9.14.2V
3.45V
1.46.41.5V
8.128.328.52sµ
21sµ
4.34.44.5sµ
7.27.37.4sµ
2.06.02.1sµ
4.05.0V
8.25.3V
tinU
3.0V
4V
0sµ
No.3343–4/10
Page 5
Block Diagram : PAL/NTSC System
LA7680, 7681
No.3343–5/10
Page 6
LA7680, 7681
Sample Application Circuit : PAL/NTSC System
No.3343–6/10
Page 7
PAL Multi-sound System
LA7680, 7681
PAL Multi-sound System
No.3343–7/10
Page 8
U.S. Multi-sound System
LA7680, 7681
Sound Input/Output
No.3343–8/10
Page 9
LA7680, 7681
PAL/SECAM Chroma Demodulator Interface
Note : The LA7680 may be used with the transcode type of SECAM chroma demodulators.
No.3343–9/10
Page 10
LA7680, 7681
Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer's
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer's products or equipment.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products(including technical data,services) described or
contained herein are controlled under any of applicable local export control laws and regulations,
such products must not be exported without obtaining the export license from the authorities
concerned in accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co. , Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification"
for the SANYO product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
This catalog provides information as of March, 2001. Specifications and information herein are subject to
change without notice.
PS No.3343–10/10
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