Rainbow-electronics MAX7442 Uživatelský manuál stáhnout pdf

General Description

The MAX7440/MAX7441/MAX7442 six-channel video

reconstruction filters replace 30 or more discrete com-

ponents. The devices are ideal for digital-to-analog

converter (DAC) video reconstruction applications,

when analog video is reconstructed from a digital data

stream. The MAX7440/MAX7441/MAX7442 operate

from a single +5V power supply. The inputs are DC-

coupled from the DAC and the output can either be AC-

or DC-coupled. The DC-IN, DC-OUT architecture, leads

to a perfect line-time distortion performance (zero tilt).

The filters have a cutoff frequency optimized for PAL,

NTSC, and SDTV video applications and offer three

high-frequency boost options. The MAX7440 offers a

flat passband response on all six channels; the

MAX7441/MAX7442 offer high-frequency boost on the

three channels used for CVBS and Y/C. The MAX7440/

MAX7441/MAX7442 are available in a 14-pin SO pack-

age and are fully specified over the extended tempera-

ture range.

Applications

Features

♦ Replace 30 or More Discrete Components

♦ Ideal for CVBS, Y/C (S-Video), and RGB or Y Pb Pr

Applications

♦ 45dB Attenuation at 27MHz

♦ -0.2dB Passband Response

♦ Ideal for STBs with SCART Interface

♦ +5V Single-Supply Voltage

♦ Input Common-Mode Range Includes GND

♦ DC-Coupled Input, DC/AC-Coupled Output

♦ 14-Pin SO Package

MAX7440/MAX7441/MAX7442

6-Channel Integrated Video Reconstruction

Filters

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-2750; Rev 0; 1/03

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.

PART TEMP RANGE

PIN-

PACKAGE

H IG H -

F R EQ U EN C Y

B O O ST

MAX7440ESD -40°C to +85°C 14 SO No

MAX7441ESD -40°C to +85°C 14 SO Yes

MAX7442ESD* -40°C to +85°C 14 SO Yes

*Future product—contact factory for availability.

75Ω

A/V SWITCHING

DEVICE (MAX4399)

OR BUFFERS

OUT1

IN1

+5V

0.1µF1µF

LOWPASS FILTER

WITH HF BOOST*

A = +1V/V

D/A

ENCODER

75Ω

OUT2

IN2

LOWPASS FILTER

A = +1V/V

D/A

75Ω

OUT3

IN3

LOWPASS FILTER

A = +1V/V

D/A

75Ω

OUT4

IN4

LOWPASS FILTER

A = +1V/V

D/A

75Ω

OUT5

IN5

LOWPASS FILTER

WITH HF BOOST*

A = +1V/V

D/A

75Ω

OUT6

*MAX7440 HAS FLAT RESPONSE, MAX7441/MAX7442 INCLUDES HF BOOST.

IN6

LOWPASS FILTER

WITH HF BOOST*

A = +1V/V

D/A

75Ω

MAX7440

MAX7441

MAX7442

Typical Application Circuit

STB

DVDs

Hard Disk Recorders

PVR

SCART Video Applications

General Video Filtering

1 2 3 4 5 6 7

MAX7440/MAX7441/MAX7442 1

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Strany 1 - MAX7440/MAX7441/MAX7442

General DescriptionThe MAX7440/MAX7441/MAX7442 six-channel videoreconstruction filters replace 30 or more discrete com-ponents. The devices are ideal

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MAX7440/MAX7441/MAX74426-Channel Integrated Video ReconstructionFilters2 _____________________________________________________________________________

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MAX7440/MAX7441/MAX74426-Channel Integrated Video ReconstructionFilters_______________________________________________________________________________

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MAX7440/MAX7441/MAX74426-Channel Integrated Video ReconstructionFilters4 _____________________________________________________________________________

Strany 5

MAX7440/MAX7441/MAX74426-Channel Integrated Video ReconstructionFilters_______________________________________________________________________________

Strany 6

MAX7440/MAX7441/MAX7442Power-Supply Bypassing and LayoutThe MAX7440/MAX7441/MAX7442 operate from a sin-gle +5V supply. Bypass VCCto GND with a 0.1µF a

Strany 7

MAX7440/MAX7441/MAX74426-Channel Integrated Video ReconstructionFiltersMaxim cannot assume responsibility for use of any circuitry other than circuitr

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Rainbow-electronics MAX7442 Uživatelský manuál

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