MAX7470 Datasheet PDF - Maxim Integrated Products
Part Number | MAX7470 | |
Description | (MAX7469 / MAX7470) HDTV Continuously Variable Anti Aliasing Filters | |
Manufacturers | Maxim Integrated Products | |
Logo | ||
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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.
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HDTV Continuously Variable
Anti-Aliasing Filters
SDA
tf
SCL
tLOW tr tSU;DAT
tf
tHD;STA
tSP tr tSP
tHD;STA
S
tHD;DAT
tHIGH
Figure 1. 2-Wire, Serial-Interface Timing Diagram
tSU;STA
Sr
tSU;STO
P
S
Typical Operating Characteristics
(AVDD = +5V, DVDD = 3.3V, RLOAD = 150Ω to GND, CLOAD = 0 to 20pF to GND, CIN = 0.1µF, TA = +25°C, unless otherwise noted.)
FREQUENCY RESPONSE (MAX7469)
10
0
-10
CODE 40
-20
-30
CODE 90
-40
CODE 220
CODE 255
-50
-60
-70
-80
0.1
1 10 100
FREQUENCY (MHz)
1000
PASSBAND FLATNESS (MAX7469)
1.0
0.5
0
-0.5 CODE 40
-1.0
CODE 90
-1.5
-2.0 CODE 220
-2.5 CODE 255
-3.0
0.1
1 10
FREQUENCY (MHz)
100
FREQUENCY RESPONSE (MAX7470)
10
0
-10
CODE 40
-20
CODE 220
-30 CODE 255
-40 CODE 90
-50
-60
-70
0.1
1 10 100
FREQUENCY (MHz)
1000
PASSBAND FLATNESS (MAX7470)
7.0
6.5
6.0
CODE 40
5.5
5.0 CODE 90
4.5
4.0 CODE 220
3.5 CODE 255
3.0
0.1
1 10
FREQUENCY (MHz)
100
90
80
70
60
50
40
30
20
10
0
0.1
GROUP DELAY
SD
HD
1 10
FREQUENCY (MHz)
100
2T RESPONSE (1 IRE = 7.14mV)
MAX7469 toc06
300mV/div
200ns/div
300mV/div
_______________________________________________________________________________________ 5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for MAX7470 electronic component. |
Information | Total 17 Pages | |
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