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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX7473 Datasheet

(MAX7472 / MAX7473) HDTV Anti Aliasing Filters

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MAX7473 pdf
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19-0619; Rev 0; 8/06
EVAALVUAAILTAIOBNLEKIT
HDTV Anti-Aliasing Filters with Triple-Input Mux
General Description
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 I2Cinter-
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 150load. 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)
Set-Top Boxes
Personal Video Recorders
Home Theaters
Applications
Features
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
Formats
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 150Video Load
0dB (MAX7472)
+6dB (MAX7473)
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
Ordering Information
PART
PIN-PACKAGE
PKG CODE
BUFFER
GAIN (dB)
MAX7472UTI+ 28 TQFN-EP*
T2855-8
0
MAX7473UTI+** 28 TQFN-EP*
T2855-8
+6
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.
Pin Configuration
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.
TOP VIEW
21 20 19 18 17 16 15
AVDD 22
A0 23
A1 24
AGND 25
AGND 26
MAX7472
MAX7473
INA1 27
INB1 28
+
EP*
14 SCL
13 SYNCC
12 SYNCB
11 SYNCA
10 DGND
9 INC3
8 INB3
1 234567
TQFN
5mm x 5mm
*EXPOSED PAD.
________________________________________________________________ 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.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX7473 Datasheet

(MAX7472 / MAX7473) HDTV Anti Aliasing Filters

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MAX7473 pdf
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HDTV Anti-Aliasing Filters with Triple-Input Mux
ABSOLUTE MAXIMUM RATINGS
AVDD to AGND .........................................................-0.3V to +6V
DVDD to DGND.........................................................-0.3V to +4V
AGND to DGND.....................................................-0.3V to +0.3V
INA_, INB_, INC_ to AGND...........................................................
............................-0.3V to the lower of (AVDD + 0.3V) and +6V
OUT_ to AGND.…..-0.3V to the lower of (AVDD + 0.3V) and +6V
SYNC_, A_ to AGND.....................................................................
...............................-0.3V to the lower of (AVDD + 0.3V) and +6V
SCL, SDA to DGND .................................................-0.3V to + 6V
Maximum Current into Any Pin
(except AVDD, DVDD, and OUT) ...................................±50mA
Continuous Power Dissipation (TA = +70°C)
28-Pin TQFN (derate 34.5mW/°C above +70°C) ........2758mW
Operating Temperature Range.............................. 0°C to +85°C
Storage Temperature Range ............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(AVDD = +5V ±5%, DVDD = 2.7V to 3.6V, RLOAD = 150to AGND, CIN = 0.1µF, TA = 0°C to +85°C, unless otherwise noted. Typical
values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Filter Passband Response
Filter Stopband Attenuation
HD: f = 100kHz to 30MHz, relative to 100kHz
(Note 1)
-3
APB
SD: f = 100kHz to 5.75MHz, relative to
100kHz (Note 2)
HD: f = 74MHz (Note 1)
ASB SD: f = 27MHz (Note 2)
-0.6 +1
±0.1
57
63
±1.0
dB
dB
HD: 100kHz to 30MHz, relative to 100kHz
(Note 1)
20
Group-Delay Deviation
tG
ns
SD: 100kHz to 5.75MHz, relative to 100kHz
(Note 2)
15
HD: channel to channel, 100kHz to 2MHz
(Note 1)
5
Group-Delay Matching
tG(MATCH)
ns
SD: channel to channel, 100kHz to 500kHz
(Note 2)
1.5
Bypass Frequency Response
SD Differential Gain
SD Differential Phase
-3dB, bypass mode, independent of filter
setting
dG 5-step modulated staircase (Note 2)
dφ 5-step modulated staircase (Note 2)
100 MHz
0.25 %
0.25 Degrees
Signal-to-Noise Ratio
SNR
Output signal (2VP-P) to RMS noise (100kHz
to 30MHz) (Note 1)
69
dB
SD Line-Time Distortion
HDIST
Deviations in a line with an 18µs, 100 IRE bar,
1 line = 63.5µs (Note 2)
0.3 %
SD Field-Time Distortion
VDIST
Deviations in 130 lines with 18µs, 100 IRE
bars (Note 2)
0.3 %
2 _______________________________________________________________________________________


Part Number MAX7473
Description (MAX7472 / MAX7473) HDTV Anti Aliasing Filters
Maker Maxim Integrated Products
Total Page 19 Pages
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