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| 型号： | LA7218M |
| 元件分类： | 信号分离 |
| 英文描述： | SYNC SEPARATOR IC, PDSO14 |
| 封装： | 0.225 INCH, MFP-14 |
| 文件页数： | 4/4页 |
| 文件大小： | 63K |
| 代理商： | LA7218M |
LA7218M
PS No.5646-4/4
Specifications of any and all SANYO Semiconductor 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 Semiconductor 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 Semiconductor 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 Semiconductor 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 Semiconductor 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 Semiconductor 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.
Set switch SW1 off only for f0 and VDL measurement. Set it on for all other measurements.
Switch SW2 has a neutral position, and is set to the "a" position for the VTH and VTL measurements, to the "b"
position for the IDH and IDL measurements, and to neutral for all other measurements.
Use a 1Vp-p standard color bar signal for the SG signal, use an attenuator for the VI min measurement, and use the
waveform shown below for the fCH and fCL measurements.
A square wave, such as that shown above, is used for the IDH and IDL measurement. It's frequency is 31.5kHz.
The fCH (and fCL) measurement is performed by setting the SG signal frequency high (or low) so that lock is lost and
lowering (raising) the frequency from those points and measuring the two frequencies at which the circuit locks. The
difference between these frequencies and f0 is fCH (and fCL).
The VTH (and VTL) measurement is performed by setting the pin 7 applied voltage V1 to 0V (or 5V) and raising (or
lowering) the voltage from those points and measuring the V1 voltages at the points pin 8 switches (inverts) from low
(high) to high (low). Those voltages are VTH and VTL, respectively.
IDH and IDL are calculated from the pin 7 waveform as shown in the figure below.
IDH =
1
10k
Ω
VIDH, IDL =
1
10k
Ω
VIDL
This catalog provides information as of November, 2006. Specifications and information herein are subject
to change without notice.
2.5V
VIDH
VIDL
4.7
μs
0.286V
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