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General Description

The MAX7461 single-channel loss-of-sync alarm (LOS)

provides composite video sync detection in NTSC,

PAL, and SECAM standard-definition television (SDTV)

systems. The MAX7461’s advanced detection circuitry

delivers robust performance by preventing false loss-

of-sync alarms due to noise. The device accepts an

AC-coupled composite (CVBS), luma (Y), or any other

video signal with sync, and outputs a logic-level signal.

The open-drain LOS output is low when no sync is

detected and high impedance when sync is detected.

The device operates from a single +5V supply.

The MAX7461 is available in a 5-pin SOT23 package

and is specified for operation over the -40°C to +85°C

temperature range.

Applications

Security Systems

Automotive Rear Seat Entertainment (RSE)

Systems

Consumer Electronics

Features

♦ Accepts CVBS, Y, or Any Other Video with Sync

♦ Loss-of-Sync Alarm Output

♦ Robust Performance in Noisy Environments

♦ Wire-OR Alarm Output

♦ NTSC, PAL, and SECAM

♦ Small 5-Pin SOT23 Package

MAX7461

Loss-of-Sync Alarm

________________________________________________________________ Maxim Integrated Products 1

19-0553; Rev 0; 5/06

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Ordering Information

PART

TEMP RANGE

PIN-

PACKAGE

CODE

MAX7461EUK

-40°C to +85°C

5 SOT23-5 U5-2

GND

LOSGND

15V

MAX7461

SOT23-5

TOP VIEW

Pin Configuration

CLAMP

LPF

SYNC

DETECTOR

GND

LOS

75Ω

+5V

0.1µF

SYNC

SLICE

LEVEL

LOS

FILTER

0.1µF

1kΩ

SYNC

MAX7461

Functional Diagram

1 2 3 4 5 6 7

Loss-of-Sync Alarm 1

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Página 1 - Loss-of-Sync Alarm

General DescriptionThe MAX7461 single-channel loss-of-sync alarm (LOS)provides composite video sync detection in NTSC,PAL, and SECAM standard-definiti

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MAX7461Loss-of-Sync Alarm2 _______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSStresses bey

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MAX7461Loss-of-Sync Alarm_______________________________________________________________________________________ 3IN500mV/divt = 10ms/divCVSB LOS ALER

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MAX7461General DescriptionThe MAX7461 single-channel LOS alarm is ideal for anyvideo system needing to verify the presence of a videosource. The devic

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MAX7461Loss-of-Sync Alarm_______________________________________________________________________________________ 5MONITOR 1µCSWITCHMATRIXANDPROCESSING

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MAX7461Loss-of-Sync Alarm6 _______________________________________________________________________________________MONITOR 1µCSWITCHMATRIXANDPROCESSING

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MAX7461Loss-of-Sync AlarmBobletMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product.

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Rainbow-electronics MAX7461 Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Sensores Rainbow-electronics MAX7461. Rainbow Electronics MAX7461 User Manual Manual do Utilizador

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