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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX7470 Datasheet

(MAX7469 / MAX7470) HDTV Continuously Variable Anti Aliasing Filters

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MAX7470 pdf
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19-0548; Rev 0; 5/06
HDTV Continuously Variable
Anti-Aliasing Filters
General Description
The MAX7469/MAX7470 triple-channel, anti-aliasing fil-
ters and buffers are ideal for high-definition (HD) and
standard-definition (SD) television (TV) applications.
Compatible with 1080i, 720p, 720i, 480p, and 480i
scanning system standards and computer format sig-
nals, the MAX7469/MAX7470 support component video
(Y Pb Pr, GsBR, and RGBHV), as well as composite
(CVBS) and S-video (Y/C).
The MAX7469/MAX7470 limit the input bandwidth for
anti-aliasing and out-of-band noise reduction prior to
digital conversion by an ADC or video decoder. The
MAX7469/MAX7470 frequency response can be contin-
uously varied in 256 linear steps through an I2C* inter-
face from below SD resolution to beyond HD resolution.
The output buffers of the MAX7469/MAX7470 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 MAX7469 has a gain of 0dB, and the
MAX7470 has a gain of +6dB. Both devices are available
in a 20-pin TQFN package and are fully specified over
the 0°C to +85°C upper-commercial temperature range.
Applications
HDTV (LCD, PDP, DLP, CRT)
Set-Top Boxes
Personal Video Recorders
Home Theaters
Pin Configuration
TOP VIEW
15 14 13 12 11
IN1 16
GND 17
IN2 18
GND 19
IN3 20
+
MAX7469
MAX7470
*EP
10 OUT1
9 AVDD
8 OUT2
7 AVDD
6 OUT3
1 2345
Features
Continuously Variable Anti-Aliasing Filter
5MHz to 34MHz in 256 Steps
Supports All Standard Video and Computer Input
Formats
480i, 480p, 720i, 720p, 1080i
QVGA, VGA, SVGA, XGA, SXGA, UXGA
Y Pb Pr, GsBR, RGBHV, Y/C, CVBS
Accepts Any Input Sync Format
Sync on Y, Sync on G, External Sync (Positive
or Negative)
Sync on All Channels
Buffered Outputs Drive Standard 150Ω Video
Load
0dB (MAX7469)
+6dB (MAX7470)
DC- or AC-Coupled Outputs
Single +5V Analog and +3.3V Digital Supplies
5mW Power-Down Mode
20-Pin TQFN Lead-Free Package
*Purchase of I2C components from Maxim Integrated Products,
Inc., or one of its sublicensed Associate Companies, conveys a
license under the Philips I2C Patent Rights to use these compo-
nents in an I2C system, provided that the system conforms to the
I2C Standard Specification defined by Philips.
Ordering Information
PART
PIN-PACKAGE
BUFFER
GAIN (dB)
PKG
CODE
MAX7469UTP+ 20 TQFN-EP*
0 T2055-4
MAX7470UTP+** 20 TQFN-EP*
+6 T2055-4
Note: All devices are specified over the 0°C to +85°C operating
temperature range.
+ Indicates lead-free packaging.
*EP = Exposed pad.
**Future product—contact factory for availability.
TQFN (5mm x 5mm)
*EXPOSED PAD.
SEE PIN DESCRIPTION FOR CONNECTION.
Typical Operating Circuit appears at end of data sheet.
________________________________________________________________ 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

MAX7470 Datasheet

(MAX7469 / MAX7470) HDTV Continuously Variable Anti Aliasing Filters

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MAX7470 pdf
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HDTV Continuously Variable
Anti-Aliasing Filters
ABSOLUTE MAXIMUM RATINGS
AVDD to GND............................................................-0.3V to +6V
DVDD to DGND.........................................................-0.3V to +4V
IN_, EXTSYNC to GND .................................................................
..................................-0.3V to the lower of (AVDD + 3V) and +6V
OUT_ to GND ...............................................................................
..................................-0.3V to the lower of (AVDD + 3V) and +6V
A_ to GND ....................................................................................
..................................-0.3V to the lower of (AVDD + 3V) and +6V
SCL, SDA to DGND ..................................................-0.3V to +6V
Continuous Power Dissipation (TA = +70°C)
20-Pin TQFN (derate 33.3mW/°C above +70°C) ...2666.7mW
Maximum Current into IN_, A_, GND,
SCL, SDA, and EXTSYNC............................................±50mA
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 = 150Ω to GND, CIN = 0.1µF, TA = 0°C to +85°C, unless otherwise noted. Typical
values are at AVDD = 5V, DVDD = 3.3V, TA = +25°C.)
PARAMETER
Filter Passband Response
Filter Stopband Attenuation
Group Delay Deviation
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
HD: f = 100kHz to 30MHz, relative to
100kHz (Note 1)
APB
SD: f = 100kHz to 5.75MHz, relative to
100kHz (Note 2)
-3 -0.6 +1
dB
±0.1 ±1.0
HD: f = 74MHz (Note 1)
ASB SD: f = 27MHz (Note 2)
45 57
52 63
dB
HD: 100kHz to 30MHz, relative to 100kHz
(Note 1)
ΔtG
SD: 100kHz to 5.75MHz, relative to 100kHz
(Note 2)
20
15
ns
Group Delay Matching
tG(MATCH)
HD: channel to channel, 100kHz to 2MHz,
(Note 1)
SD: channel to channel, 100kHz to 500kHz,
(Note 2)
5
1.5
ns
Bypass Frequency Response
SD Differential Gain
SD Differential Phase
Signal-to-Noise Ratio
dG
dφ
SNR
-3dB, bypass mode, independent of filter
setting
Five-step modulated staircase (Note 2)
Five-step modulated staircase (Note 2)
Output signal (2VP-P) to RMS noise (100kHz
to 30MHz), f = 30MHz
100 MHz
0.25 %
0.25 Degrees
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 MAX7470
Description (MAX7469 / MAX7470) HDTV Continuously Variable Anti Aliasing Filters
Maker Maxim Integrated Products
Total Page 17 Pages
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