Rainbow Electronics MAX7442 - Manual

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.
75 Ω 75 Ω
A/V SWITCHING
DEVICE (MAX4399)
OR BUFFERS
OUT1 IN1
+5V
0.1 µF 1 µF
LOWPASS FILTER
WITH HF BOOST*
A = +1V/V D/A
ENCODER
75 Ω
OUT2 IN2
LOWPASS FILTER A = +1V/V D/A
75 Ω
OUT3 IN3
LOWPASS FILTER A = +1V/V D/A
75 Ω
OUT4 IN4
LOWPASS FILTER A = +1V/V D/A
75 Ω
OUT5 IN5 LOWPASS FILTER
WITH HF BOOST*
A = +1V/V D/A
75 Ω
OUT6
*MAX7440 HAS FLAT RESPONSE, MAX7441/MAX7442 INCLUDES HF BOOST.
IN6 LOWPASS FILTER
WITH HF BOOST*
A = +1V/V D/A
75 Ω
75 Ω
75 Ω
75 Ω
75 Ω
MAX7440
MAX7441
MAX7442
Typical Application Circuit
STB
DVDs
Hard Disk Recorders
PVR
SCART Video Applications
General Video Filtering