MAX4079 Maxim Integrated Products, MAX4079 Datasheet

MAX4079

Manufacturer Part Number

MAX4079

Description

Complete Audio/Video Backend Solution

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX4079.pdf (15 pages)

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Part Number:

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The MAX4079 filters and buffers video (NTSC/PAL/DVB)

and stereo audio signals from the MPEG decoder of a

cable/satellite receiver, VCR/DVD player, or a TV to an

external load. The MAX4079 has luma-chroma (Y-C)

and composite (CVBS) video inputs with one Y-C and

two CVBS outputs. All video inputs are AC-coupled with

internal DC biasing on the chroma input and active

clamps for the luma and composite.

The MAX4079 video reconstruction filters have a 6MHz

cutoff frequency and 50dB attenuation at 27MHz. The

filters are matched with flat group delay for standard-

definition video. The video gain is fixed at +6dB to drive

a 75Ω back-terminated load (150Ω) to unity gain. The

video outputs can be either DC- or AC-coupled and are

The MAX4079 audio amplifiers have differential inputs

for optimum performance, but can be used with single-

ended sources with external biasing. The audio chan-

nels have a fixed gain of +6dB and deliver 2.6V

output with a differential input of ±1.85V. The audio

amplifiers operate from a +9V to +12V single supply

and feature an internal bias generator. An on-chip

mixer also provides a mono output, with +3dB gain,

derived from the left and right audio channels.

The MAX4079 is available in 24-pin TSSOP package,

and is fully specified over the 0°C to +70°C commercial

temperature range. The MAX4079 Evaluation Kit is

available to help speed designs.

19-3780; Rev 1; 3/09

Pin Configuration appears at end of data sheet.

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Satellite Receivers

Cable Receivers

Home Theater Systems

DVD Players

AV Receivers

Televisions

________________________________________________________________ Maxim Integrated Products

General Description

Applications

RMS

♦ Integrated Video Reconstruction Filters—6MHz

♦ Integrated Video and Audio Amplifiers

♦ Integrated Video Input Clamps and Biasing

♦ Mono Audio and CVBS Output to Drive External

♦ +5V (Video) and +9V to +12V (Audio) Single-

♦ Differential/Single-Ended Audio Inputs

♦ 24-Pin TSSOP Package

+ Denotes lead(Pb)-free package.

MAX4079CUG+

Complete Audio/Video

Lowpass Filter Supports NTSC, PAL, or DVB per

ITU-601

Modulator

Supply Operation

CVBSIN

RINN

CIN

RINP

LINP

LINN

YIN

PART

Backend Solution

AUDV

NETWORK

CLAMP

BIAS

MAX4079

GVID

VVID

Ordering Information

TEMP RANGE

0°C to +70°C

Functional Diagram

REXT

GAUD

FILTER

CBYPASS

+6dB

+3dB

+6dB

PIN-PACKAGE

24 TSSOP

Features

YOUT

COUT

ROUT2

LOUT1

LOUT2

CVBSOUT1

MONO

CVBSOUT2

ROUT1

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