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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
TV Tuner Band Selector
Ordering number:ENN920E
LA7910
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Overview
The LA7910 is an IC for tuner band selection of electronic
tuning type television set. This IC is used for producing the
VHF channel “L” band power supply/VHF channel “H”
band power supply/UHF channel power supply for tuner
and the CATV power supply according to the band select
signal of 2 inputs.
Package Dimensions
unit:mm
3017D-SIP9
[LA7910]
22.0
3.0
Functions
• VHF “L” band power supply output.
• VHF “H” band power supply output.
• UHF power supply output.
• CATV power supply output.
Features
• 2 inputs and 4 outputs.
• Low output saturation voltage : 0.25V typ., IO=60mA.
• Compact 9-pin single-end package.
Specifications
Maximum Ratings at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovylppusmumixaMV
I
tnerrucdaolmumixaM
VtnerrucylppusmumixaM
tnerructupnII
erutarepmetegarotSgtsT 521+ot55–
2CC
noitapissidrewopelbawollAxamdP 002Wm
erutarepmetgnitarepOrpoT 58+ot02–
1
I
xam 51V
9
I,xam
,xam
2
I,xam
7
I6xam 01Am
3
xam
8
I,xam
xam 2Am
4
(0.84)
(4.5)
5.7max
1
2.54
0.5
9
1.3
3.2
0.51min
0.25
1.35
SANYO : SIP9
06–Am
˚C
˚C
O2500TN (KT)/O3095MH/N178YT/3204KI/7091KI No.920–1/3
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Operating Characteristics at Ta = 25˚C
retemaraPlobmySsnoitidnoC
niardtnerruCI
egatlovnoitarutastuptuOV
egatlovdlohserhtlevel-hgihtupnIV
egatlovdlohserhtlevel-woltupnIV
tnerrucegakaeltuptuOI
1I,2I,7I,8
1I,2I,7I,8
Note ) Current direction :
Current flowing into IC : Pulse (No sign)
Current flowing out of IC : Minus (–)
Truth Table
tupnItuptuO
3niP4niP1niP2niP7niP8niP
LLHZZZ
HLZHZZ
LHZZHZ
HHZZZH
Sample Application Circuit
LA7910
sgnitaR
nimpytxam
V
I,V21=
I,Am5=
)tas(O
9
6
HT
LT
Ta≤70˚C
Am06=052.07.0V
O
8.0V
Input threshold voltage
: VTL=0.8V , VTH=3V
tinU
06Am
0.3V
05Aµ
Proper cares in using the IC
1. When using a capaciti ve load, connect a diode across pins 6 and 9
as shown above.
2. The value of load capacitors C1, C2, C3, C4 must not exceed 22µF.
No.920–2/3
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LA7910
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 October, 2000. Specifications and information herein are subject
to change without notice.
PS No.920–3/3
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