MAX7442 Datasheet, PDF (1/7 Pages) Maxim Integrated Products – 6-Channel Integrated Video Reconstruction Filters

19-2750; Rev 0; 1/03
6-Channel Integrated Video Reconstruction
Filters
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
STB
PVR
DVDs
SCART Video Applications
Hard Disk Recorders
General Video Filtering
+5V
Features
o Replace 30 or More Discrete Components
o Ideal for CVBS, Y/C (S-Video), and RGB or Y Pb Pr
Applications
o 45dB Attenuation at 27MHz
o -0.2dB Passband Response
o Ideal for STBs with SCART Interface
o +5V Single-Supply Voltage
o Input Common-Mode Range Includes GND
o DC-Coupled Input, DC/AC-Coupled Output
o 14-Pin SO Package
Ordering Information
PART
MAX7440ESD
TEMP RANGE
PIN-
PACKAGE
-40°C to +85°C 14 SO
H IG H -
FREQUENCY
B O O ST
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.
Typical Application Circuit
0.1µF
1µF
ENCODER
D/A
MAX7440
A/V SWITCHING
MAX7441
DEVICE (MAX4399)
MAX7442
OR BUFFERS
IN1
LOWPASS FILTER
WITH HF BOOST*
A = +1V/V
OUT1
75Ω
75Ω
IN2
OUT2
75Ω
75Ω
D/A
LOWPASS FILTER A = +1V/V
IN3
OUT3
75Ω
75Ω
D/A
LOWPASS FILTER A = +1V/V
IN4
OUT4
75Ω
75Ω
D/A
LOWPASS FILTER A = +1V/V
D/A
IN5
LOWPASS FILTER
WITH HF BOOST*
A = +1V/V
OUT5
75Ω
75Ω
D/A
IN6
LOWPASS FILTER
WITH HF BOOST*
A = +1V/V
OUT6
75Ω
75Ω
*MAX7440 HAS FLAT RESPONSE, MAX7441/MAX7442 INCLUDES HF BOOST.
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