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參數資料
| 型號： | LA75691 |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO/VIDEO DEMODULATOR, PDIP24 |
| 封裝： | SDIP-24 |
| 文件頁數： | 5/13頁 |
| 文件大小： | 206K |
| 代理商： | LA75691 |
PS No. 5734-13/13
LA75691
Notes on VCO Tank Circuits
Built-in capacitor VCO tank circuits
When power is applied to the IC, the heat generated by the IC is transmitted through the printed circuit board to the
VCO tank circuit. At this point, the VCO coil frame functions as a heat sink and the IC heat is dissipated. As a result,
this heat is not transmitted readily to the VCO tank circuit's built-in capacitor, and drift at power on is reduced.
Therefore, it suffices to design the circuit so that the coil and capacitor thermal characteristics cancel. Ideally, it is
better to use a coil with a core material that has low temperature coefficient characteristics.
External capacitor VCO tank circuits
When an external capacitor is used, heat generated by the IC is transmitted through the printed circuit board directly to
the VCO tank circuit external capacitor. While this capacitor is heated relatively early after the power is turned on, the
coil is not influenced as much by this heat, and as a result the power-on drift is larger. Accordingly, a coil whose core
material has low temperature coefficient characteristics must be used. It is also desirable to use a capacitor with
similarly low temperature coefficient characteristics.
Note: Applications that use an external capacitor here must use a chip capacitor. If an ordinary capacitor is used,
problems such as the oscillator frequency changing with the capacitor orientation may occur.
This catalog provides information as of June, 1998. Specifications and information herein are subject to
change without notice.
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.
Coil Specifications
JAPAN
US
PAL
f = 58.75 MHz
f = 45.75 MHz
f = 38.9 MHz
VCO coils
Test production no. 16991B
Test production no. 16687B
Test production no. 16686B
Tokyo Parts Industrial Co., Ltd.
SAW filters (split)
Picture
TSF1137U
TSF1241
TSF5315
Sound
SAW filters (inter)
TSF5220
TSF5321
TSF5221
TSF5344
相關PDF資料 |
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| LA75693M | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75693VA | FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75694M | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75694M | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
| LA75695VA | AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO24 |
相關代理商/技術參數 |
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| LA75694M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For Use in TV/VTR Applications IF Signal Processing (VIF/SIF for Hi-Fi) |
| LA75695VA | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For Use in TV/VTR Applications IF Signal Processing (VIF+SIF+SIF converter) |
| LA7570 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:TV,VTR IF Signal Processor (Super Split PLL VIF+SIF) |
| LA75710VA | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Linear IC NTSC Support TV and VCR VIF/SIF Signal Processing IC |
| LA7575 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Super-split, PLL-II Video and Sound IF Signal Processor |
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