MAX4079CUG+ Maxim Integrated Products, MAX4079CUG+ Datasheet

IC A/V BACKEND 24-TSSOP

MAX4079CUG+

Manufacturer Part Number
MAX4079CUG+
Description
IC A/V BACKEND 24-TSSOP
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX4079CWGT.pdf (15 pages)

Specifications of MAX4079CUG+

Applications
*
Mounting Type
Surface Mount
Package / Case
24-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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
powered by a single +5V supply.
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
CLAMP
BIAS
MAX4079
GVID
VVID
Ordering Information
TEMP RANGE
0°C to +70°C
Functional Diagram
REXT
GAUD
FILTER
FILTER
FILTER
LP
LP
LP
CBYPASS
+6dB
+6dB
+6dB
+6dB
+6dB
+6dB
+3dB
+6dB
+6dB
PIN-PACKAGE
24 TSSOP
Features
YOUT
COUT
ROUT2
LOUT1
LOUT2
CVBSOUT1
MONO
CVBSOUT2
ROUT1
1

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MAX4079CUG+ Summary of contents

Page 1

... Integrated Video Input Clamps and Biasing ♦ Mono Audio and CVBS Output to Drive External Modulator ♦ +5V (Video) and +9V to +12V (Audio) Single- Supply Operation ♦ Differential/Single-Ended Audio Inputs ♦ 24-Pin TSSOP Package RMS PART MAX4079CUG+ + Denotes lead(Pb)-free package. Applications YIN CIN CVBSIN RINP RINN LINP ...

Page 2

Complete Audio/Video Backend Solution ABSOLUTE MAXIMUM RATINGS GVID to GAUD.......................................................-0.1V to +0.1V VVID to GVID ............................................................-0.3V to +6V AUDV to GAUD ......................................................-0.3V to +14V LINP, LINN, RINP, RINN, CBYPASS to GAUD .........-0.3V to +6V LOUT1, LOUT2, ROUT1, ROUT2, MONO to ...

Page 3

DC ELECTRICAL CHARACTERISTICS (continued +5V +12V VVID AUDV GVID +70°C, unless otherwise noted. Typical values are at T PARAMETER SYMBOL AUDIO Voltage Gain A Mono Voltage Gain A V,MONO Gain Matching Between ΔA ...

Page 4

Complete Audio/Video Backend Solution AC ELECTRICAL CHARACTERISTICS (continued +5V +12V VVID AUDV GVID 10µ 10kΩ ±1% to GAUD, R OUT AUDIO LOAD_AUD noted. Typical values are at T ...

Page 5

V = +12V VVID AUDV GVID 10µ 10kΩ OUT AUDIO LOAD_AUD VIDEO CROSSTALK (CVBSOUT_ TO YIN) - P-P -50 -60 -70 -80 -90 ...

Page 6

Complete Audio/Video Backend Solution (V = +5V +12V VVID AUDV GVID 10µ 10kΩ OUT AUDIO LOAD_AUD DIFFERENTIAL GAIN 0.2 0.1 0 -0.1 -0 DIFFERENTIAL PHASE ...

Page 7

V = +12V VVID AUDV GVID 10µ 10kΩ OUT AUDIO LOAD_AUD TOTAL HARMONIC DISTORTION PLUS NOISE RATIO (RIGHT CHANNEL) 0.010 0.009 0.008 0.007 V = 0.5V 0.006 ...

Page 8

Complete Audio/Video Backend Solution PIN NAME 1 REXT External Filter Resistor. Bypass with a 10kΩ ±1% resistor and a 0.1µF capacitor to GVID VVID Video Power-Supply Input 3 CVBSIN Composite Video Input 4, 21 GVID Video Ground 5 ...

Page 9

LINP A OUTL+ LINN A OUTL- AUDIO DAC RINP A OUTR+ RINN A OUTR- Figure 1. Differential Audio Inputs All video inputs are stable with up to 150Ω source resis- tance. For higher values, consult Maxim applications. Video Reconstruction ...

Page 10

Complete Audio/Video Backend Solution Layout and Grounding For optimal performance, stitch ground vias between the narrow adjacent signal traces to minimize crosstalk. Avoid running video traces parallel to high-speed data lines. The MAX4079 provides separate ground connections +5V LINP A ...

Page 11

VIDEO SUPPLY VVID 0.01μF 0.1μF 4.7μF VVID GVID GVID 0.1μF YIN YIN 75Ω 0.1μF CIN CIN 75Ω 0.1μF CVBSIN CVBSIN 75Ω RINP RINP RINN RINN LINP LINP LINN LINN REXT 0.1μF 10kΩ ______________________________________________________________________________________ Complete Audio/Video Backend Solution +12V AUDIO ...

Page 12

Complete Audio/Video Backend Solution Pin Configuration TOP VIEW + REXT 1 VVID 2 CVBSIN 3 GVID 4 MAX4079 YIN 5 CBYPASS 6 CIN 7 AUDV 8 LINP 9 LINN 10 RINN 11 RINP 12 TSSOP 12 ______________________________________________________________________________________ PROCESS: BiCMOS 24 ...

Page 13

For the latest package outline information and land patterns www.maxim-ic.com/packages. PACKAGE TYPE 24 TSSOP ______________________________________________________________________________________ Complete Audio/Video Backend Solution Package Information PACKAGE CODE U24+1 DOCUMENT NO. 21-0066 13 ...

Page 14

Complete Audio/Video Backend Solution For the latest package outline information and land patterns www.maxim-ic.com/packages TOP VIEW FRONT VIEW 14 ______________________________________________________________________________________ Package Information (continued 0∞-8∞ L SIDE VIEW INCHES ...

Page 15

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © 2009 Maxim Integrated Products ...

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