Monolithic Linear LA7218M Sync Separator with Sync Detection
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Ordering number EN5646
Monolithic Linear
LA7218M
Sync Separator with Sync Detection Functions
LA7218M sync separator with designed video cameras, VCRs, TVs, similar products. also provides sync detection function. This implement adjustment-free system with high detection precision using ceramic oscillator PLL-based horizontal sync detection circuit.
Functions
Sync separator Vertical sync separator Horizontal (32fH) Sync detector Since functions fixed, this performance cannot adjusted with external signals. Furthermore, since this includes EPROM other memory, software cannot rewritten.
Features
Ceramic oscillator adopted adjustment-free manufacturing Negative outputs High-impedance video signal inputs Supply voltage
Specifications
Maximum Ratings 25°C
Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol Topr Tstg 65°C Conditions Ratings +125 Unit
SANYO Semiconductor products described contained herein have specifications that handle applications that require extremely high levels reliability, such life-support systems, aircraft's control systems, other applications whose failure reasonably expected result serious physical and/or material damage. Consult with your SANYO Semiconductor representative nearest before using SANYO Semiconductor products described contained herein such applications. SANYO Semiconductor assumes responsibility equipment failures that result from using products values that exceed, even momentarily, rated values (such maximum ratings, operating condition ranges, other parameters) listed products specifications SANYO Semiconductor products described contained herein.
N1506 A8-9655 No.5646-1/4
LA7218M
Operating Conditions 25°C
Parameter Recommended supply voltage Operating supply voltage range Symbol Conditions Ratings Unit
Electrical Characteristics 25°C,
Parameter Current drain Sync separator minimum input level output delay time output pulse width output delay time output pulse width Free-running frequency Capture range Capture range SYNC output high level SYNC output level output high level output level output high level output level output high level output level Comparator threshold high level Comparator threshold level Threshold width operating current (high) operating current (low) Symbol SW2-a SW2-a VTH-VTL SW2-b SW2-b 0.10 With switch Discriminated comparing pins Discriminated comparing pins Read from waveform Read from waveform Read from waveform Read from waveform Read from waveform Read from waveform Compare pins Compare pins Conditions Standard color input 0.16 15.4 1000 Ratings 0.21 15.75 1500 2.95 0.22 0.40 0.26 16.1 Unit
Package Dimensions
unit (typ) 3034B
0.63
0.15
10.0
0.35
1.27
SANYO MFP14(225mil)
(1.5)
(1.19)
No.5646-2/4
LA7218M
Equivalent Circuit Block Diagram
0.056F 150k 2.5V
32fH
COUNT DOWN SYNC
LOCK
V.SEP
CLAMP
VIDEO
SYNC
Test Circuit Diagram
500F9 0.01F
3.9k
VCC=5V
820pF
LA7218M
No.5646-3/4
LA7218M
switch only measurement. other measurements. Switch neutral position, position measurements, position measurements, neutral other measurements. 1Vp-p standard color signal signal, attenuator measurement, waveform shown below measurements.
0.286V 4.7s
square wave, such that shown above, used measurement. It's frequency 31.5kHz. (and fCL) measurement performed setting signal frequency high low) that lock lost lowering (raising) frequency from those points measuring frequencies which circuit locks. difference between these frequencies (and fCL). (and VTL) measurement performed setting applied voltage raising lowering) voltage from those points measuring voltages points switches (inverts) from (high) high (low). Those voltages VTL, respectively. calculated from waveform shown figure below.
VIDH 2.5V VIDL
VIDH, VIDL
Specifications SANYO Semiconductor products described contained herein stipulate performance, characteristics, functions described products independent state, guarantees performance, characteristics, functions described products mounted customer's products equipment. verify symptoms states that cannot evaluated independent device, customer should always evaluate test devices mounted customer's products equipment. SANYO Semiconductor Co., Ltd. strives supply high-quality high-reliability products. However, semiconductor products fail with some probability. possible that these probabilistic failures could give rise accidents events that could endanger human lives, that could give rise smoke fire, that could cause damage other property. When designing equipment, adopt safety measures that these kinds accidents events cannot occur. Such measures include limited protective circuits error prevention circuits safe design, redundant design, structural design. event that SANYO Semiconductor products (including technical data,services) described contained herein controlled under applicable local export control laws regulations, such products must exported without obtaining export license from authorities concerned accordance with above law. part this publication reproduced transmitted form means, electronic mechanical, including photocopying recording, information storage retrieval system, otherwise, without prior written permission SANYO Semiconductor Co., Ltd. information described contained herein subject change without notice product/technology improvement, etc. When designing equipment, refer "Delivery Specification" SANYO Semiconductor product that intend use. Information (including circuit diagrams circuit parameters) herein example only; guaranteed volume production. SANYO Semiconductor believes information herein accurate reliable, guarantees made implied regarding infringements intellectual property rights other rights third parties.
This catalog provides information November, 2006. Specifications information herein subject change without notice. No.5646-4/4
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