MAX7449 Datasheet, PDF (1/6 Pages) Maxim Integrated Products – 3-Channel Video Reconstruction Filter for RGB Component Video

19-2990; Rev 0; 9/03
EVAALVUAAILTAIOBNLEKIT
3-Channel Video Reconstruction Filter
for RGB Component Video
General Description
The MAX7449, 3-channel, buffered video reconstruc-
tion filter is ideal for anti-aliasing and digital-to-analog
converter (DAC)-smoothing video applications or wher-
ever analog video is reconstructed from a digital data
stream (such as cable/satellite/terrestrial set-top boxes,
DVD players, hard-disk recorders (HDRs), and person-
al video recorders (PVRs)). This device operates from a
single +5V supply and has a flat passband out to 5MHz
with a stopband attenuation of 43dB at 27MHz. This
makes it ideal for use with NTSC, PAL, and standard-
definition digital TV (SDTV) video systems. Each output
is capable of driving two standard 150Ω video loads.
The MAX7449 processes component RGB video signals.
The output video buffers have a fixed gain of +6dB. The
output video drivers can be disabled with an external pin.
The MAX7449 is available in a 14-pin TSSOP package
with an exposed pad, and is specified over the -40°C to
+85°C extended temperature range.
Set-Top Boxes/HDRs
Desktop Video Editors
Digital VCRs
Applications
Game Consoles
DVD Players
Features
o 3-Channel Filter and Buffer for RGB Video Signals
o External Sync Signal Input
o Filter Response Ideal for NTSC, PAL, and
Interlaced SDTV Video Signals
o 43dB (typ) Stopband Attenuation at 27MHz
o ±0.75dB (max) Passband Ripple at 5MHz
o Blanking Level Voltage on Output <1V
o Each Channel Drives Two 150Ω Video Loads
o +5V Single-Supply Voltage
o Small 14-Pin TSSOP Package
PART
MAX7449EUD
*EP = Exposed pad.
Ordering Information
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
14 TSSOP-EP*
Pin Configuration appears at end of data sheet.
ENCODER
R D/A
G D/A
B D/A
V_CC
0.1µF
INA
LOWPASS
FILTER
0.1µF
INB
LOWPASS
FILTER
0.1µF
INC
LOWPASS
FILTER
Functional Diagram
75Ω
75Ω
*
OUTA
75Ω
75Ω
*
75Ω
75Ω
*
OUTB
75Ω
75Ω
*
75Ω
75Ω
*
OUTC
75Ω
75Ω
*
MAX7449
GND
EXTSYNC
DISABLE
*OPTIONAL CAPACITORS
________________________________________________________________ Maxim Integrated Products 1
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.