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MAX7443, MAX7444

Triple-Channel Video Reconstruction Filter and Buffer for Composite and Y/C Outputs

Low-Cost, Triple-Channel Video Reconstruction Filters and Buffers for S-Video and CVBS Video Signals

Overview

Technical Documents

Ordering Info

Status

Part Number	Status	Replacement
MAX7443	This product is Not Recommended for New Designs. See Ordering Information for recommended replacements.	MAX9512
MAX7444	This product is Not Recommended for New Designs. See Ordering Information for recommended replacements.	MAX9512

Description

The MAX7443/MAX7444 are low-cost, triple-channel video reconstruction filters for S-video and CVBS video signals. These devices are ideal for anti-aliasing and DAC smoothing video applications such as set-top boxes, DVD players, hard-disk recorders (HDRs), and personal video recorders. These filters operate from a single +5V supply. They are optimized for NTSC, PAL, and standard-definition digital TV (SDTV) video systems.

Each channel consists of a lowpass filter and an adjustable-gain output buffer capable of driving two standard 150Ω video loads. The output buffers can drive either an AC or a DC load such that the blanking level voltage after the backmatch resistor is less than 1V. The Y and C video inputs are summed to produce the composite video output. The MAX7444 offers high-frequency boost to improve picture sharpness. The MAX7443 has a maximum flat-frequency response.

The MAX7443/MAX7444 are available in a tiny 8-pin thin QFN and an 8-pin SO package with exposed pad, and are fully specified over the -40°C to +85°C extended temperature range.

Data Sheet

Download	Rev 1	(PDF, 272kB)
E-Mail

An evaluation kit is available: MAX7443EVKIT

Key Features

Triple-Channel Filter and Buffer for CVBS and Y/C (S-Video)
Filter Response Ideal for NTSC, PAL, and Interlaced SDTV Signals
41dB (typ) Stopband Attenuation at 27MHz
-0.3dB (typ) Passband Response
Low Blanking Level Voltage Allows DC-Coupled Output
Each Channel Drives Two 150Ω Video Loads
+5V Single-Supply Voltage
Tiny 8-Pin Thin QFN or 8-Pin SO Packages

Applications/Uses

Digital VCRs
Every Composite, S-Video Output for NTSC/PAL, SDTV
Game Consoles
Security Cameras/Digital Cameras
Set-Top Boxes/HDR/DVD

Diagram

Functional Diagram

Application Notes

Application Note 4287

Reconstructing Analog Video with the Maxim Video Filter Family

Product Guides

Amplifiers and Comparators (PDF)

Reliability Reports

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Software/Models

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Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX7443ESA			NRND	MAX9512	SOIC(N)-EP;8 pin;30.9 mm² Outline Drawing:21-0111 (PDF) Land Pattern: 90-0150 (PDF) Use pkgcode/variation: S8E-12*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX7443ESA+			NRND	MAX9512	SOIC(N)-EP;8 pin;30.9 mm² Outline Drawing:21-0111 (PDF) Land Pattern: 90-0150 (PDF) Use pkgcode/variation: S8E+12*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX7443ESA+T			NRND	MAX9512	N.SO;8 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX7443ESA-T			NRND	MAX9512	N.SO;8 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX7443ETA+T			NRND	MAX9512	TDFN-EP;8 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0059 (PDF) Use pkgcode/variation: T833+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX7443ETA-T			NRND	MAX9512	TDFN-EP;8 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0059 (PDF) Use pkgcode/variation: T833-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX7444ESA			NRND	MAX9512	SOIC(N)-EP;8 pin;30.9 mm² Outline Drawing:21-0111 (PDF) Land Pattern: 90-0150 (PDF) Use pkgcode/variation: S8E-12*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX7444ESA+			NRND	MAX9512	SOIC(N)-EP;8 pin;30.9 mm² Outline Drawing:21-0111 (PDF) Land Pattern: 90-0150 (PDF) Use pkgcode/variation: S8E+12*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX7444ESA+T			NRND	MAX9512	SOIC(N)-EP;8 pin;30.9 mm² Outline Drawing:21-0111 (PDF) Land Pattern: 90-0150 (PDF) Use pkgcode/variation: S8E+12*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX7444ESA-T			NRND	MAX9512	SOIC(N)-EP;8 pin;30.9 mm² Outline Drawing:21-0111 (PDF) Land Pattern: 90-0150 (PDF) Use pkgcode/variation: S8E-12*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX7444ETA+T			NRND	MAX9512	TDFN-EP;8 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0059 (PDF) Use pkgcode/variation: T833+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX7444ETA-T			NRND	MAX9512	TDFN-EP;8 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0059 (PDF) Use pkgcode/variation: T833-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Evaluation Kits

MAX7443EVKIT

Evaluation Kit for the MAX7443 and MAX7444

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