19-0619; Rev 0; 8/06
HDTV Anti-Aliasing Filters with Triple-Input Mux
The MAX7472/MAX7473 triple-channel anti-aliasing fil-
ters and buffers with triple-input mux are ideal for high-
definition (HD) and standard-definition (SD) television
(TV) applications. Compatible with 1080i, 720p, 480p,
and 480i scanning system standards as well as com-
puter format signals, the MAX7472/MAX7473 support
component video (Y PB PR, GsBR, and RGBHV) as well
as composite (CVBS) and S-video (Y/C).
The MAX7472/MAX7473 limit the input bandwidth for
anti-aliasing and out-of-band noise reduction prior to
digital conversion by an ADC or video decoder. The
frequency response of the MAX7472/MAX7473 can be
continuously varied in 256 linear steps from below SD
response to beyond HD response through an I2C† inter-
face. The adjustable cutoff frequency allows filter opti-
mization for sampling rate and noise reduction. The
MAX7472/MAX7473 also include 3:1 multiplexers for
selection of three complete sets of video inputs through
the I2C interface.
The MAX7472/MAX7473 drive a 2VP-P video signal into
a standard 150Ω load. The inputs are AC-coupled and
the outputs can be either DC- or AC-coupled. The
MAX7472 has a gain of 0dB and the MAX7473 has a
gain of +6dB. Both devices are available in a 28-pin
TQFN package and are fully specified over the upper-
commercial (0°C to +85°C) temperature range.
HDTV (LCD, PDP, DLP, CRT)
Personal Video Recorders
o Continuously Variable Anti-Aliasing Filter
5MHz to 34MHz in 256 Steps
o 3:1 Input Mux on Each Video Filter
o Supports All Standard Video and Computer Input
480i, 480p, 720p, 1080i
QVGA, VGA, SVGA, XGA, SXGA, UXGA
Y PB PR, GsBR, RGBHV, Y/C, CVBS
o Accepts Any Input Sync Format
Sync on Y, Sync on G, External Sync
(Positive or Negative)
Sync on All Channels
o Buffered Outputs Drive Standard 150Ω Video Load
o DC- or AC-Coupled Outputs
o Single +5V Analog and +3.3V Digital Supplies
o 5mW Power-Down Mode
o Lead (Pb)-Free 28-Pin TQFN Package
MAX7472UTI+ 28 TQFN-EP*
MAX7473UTI+** 28 TQFN-EP*
Note: All devices are specified over the 0°C to +85°C operat-
ing temperature range.
+Indicates lead-free packaging.
*EP = Exposed pad.
**Future product—contact factory for availability.
Typical Operating Circuit appears at end of data sheet.
†Purchase of I2C components from Maxim Integrated
Products, Inc., or one of its sublicensed Associated
Companies, conveys a license under the Philips I2C Patent
Rights to use these components in an I2C system, provided
that the system conforms to the I2C Standard Specification as
defined by Philips.
21 20 19 18 17 16 15
5mm x 5mm
________________________________________________________________ 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.