MAX7469UTP Maxim Integrated, MAX7469UTP Datasheet

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MAX7469UTP

Manufacturer Part Number
MAX7469UTP
Description
Video ICs
Manufacturer
Maxim Integrated
Datasheet
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, 480p, and 480i scanning
system standards and computer format signals, the
MAX7469/MAX7470 support component video (Y P
G
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 I
face from below SD resolution to beyond HD resolution.
The output buffers of the MAX7469/MAX7470 drive a
2V
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.
19-0548; Rev 1; 4/07
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.
s
TOP VIEW
P-P
BR, and RGBHV), as well as composite (CVBS) and
video signal into a standard 150Ω load. The inputs
HDTV (LCD, PDP, DLP, CRT)
Set-Top Boxes
Personal Video Recorders
Home Theaters
GND
GND
IN1
IN2
IN3
16
17
18
19
20
SEE PIN DESCRIPTION FOR CONNECTION.
________________________________________________________________ Maxim Integrated Products
+
15
TQFN (5mm x 5mm)
1
General Description
*EXPOSED PAD.
14
2
MAX7469
MAX7470
Pin Configuration
13
3
12
4
Applications
*EP
11
5
10 OUT1
9
8
7
6
AV
OUT2
AV
OUT3
2
HDTV Continuously Variable
C inter-
DD
DD
b
P
r
,
♦ Continuously Variable Anti-Aliasing Filter
♦ Supports All Standard Video and Computer Input
♦ Accepts Any Input Sync Format
♦ Buffered Outputs Drive Standard 150Ω Video
♦ DC- or AC-Coupled Outputs
♦ Single +5V Analog and +3.3V Digital Supplies
♦ 5mW Power-Down Mode
♦ 20-Pin TQFN Lead-Free Package
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.
Typical Operating Circuit appears at end of data sheet.
M A X7 4 6 9 U TP +
M A X7 4 7 0 U TP + **
Formats
Load
5MHz to 34MHz in 256 Steps
480i, 480p, 720p, 1080i
QVGA, VGA, SVGA, XGA, SXGA, UXGA
Y P
Sync on Y, Sync on G, External Sync (Positive
or Negative)
Sync on All Channels
+6dB (MAX7470)
PART
0dB (MAX7469)
Anti-Aliasing Filters
b
P
r
, G
s
BR, RGBHV, Y/C, CVBS
PIN-PACKAGE
20 TQFN-EP*
20 TQFN-EP*
Ordering Information
GAIN (dB)
BUFFER
+6
0
Features
T2055-4
T2055-4
CODE
PKG
1

Related parts for MAX7469UTP

MAX7469UTP Summary of contents

Page 1

... TQFN (5mm x 5mm) *EXPOSED PAD. SEE PIN DESCRIPTION FOR CONNECTION. ________________________________________________________________ Maxim Integrated Products 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. HDTV Continuously Variable Anti-Aliasing Filters ♦ Continuously Variable Anti-Aliasing Filter 5MHz to 34MHz in 256 Steps ♦ ...

Page 2

HDTV Continuously Variable Anti-Aliasing Filters ABSOLUTE MAXIMUM RATINGS AV to GND............................................................-0. DGND.........................................................-0.3V to +4V DD IN_, EXTSYNC to GND ................................................................. ..................................-0.3V to the lower of (AV OUT_ to GND ............................................................................... ..................................-0.3V to the lower of ...

Page 3

ELECTRICAL CHARACTERISTICS (continued) (AV = +5V ±5 2.7V to 3.6V values are 5V 3.3V PARAMETER SYMBOL Clamp Settling Time Minimum Functional Input Sync Amplitude Low-Frequency Gain (Note ...

Page 4

HDTV Continuously Variable Anti-Aliasing Filters TIMING CHARACTERISTICS (AV = +5V ±5 2.7V to 3.6V values are 5V 3.3V PARAMETER SYMBOL Serial-Clock Frequency Bus Free Time Between STOP ...

Page 5

SDA t SU;DAT LOW r SCL t HD;STA t HD;DAT S Figure 1. 2-Wire, Serial-Interface Timing Diagram (AV = +5V 3.3V 150Ω to GND LOAD FREQUENCY RESPONSE (MAX7469) 10 ...

Page 6

HDTV Continuously Variable Anti-Aliasing Filters (AV = +5V 3.3V 150Ω to GND LOAD MODULATED 12.5T RESPONSE (1 IRE = 7.14mV) MAX7469 toc07 300mV/div 300mV/div 400ns/div BYPASS-MODE FREQUENCY RESPONSE 10 5 MAX7470 0 MAX7469 ...

Page 7

PIN NAME 1 DGND Digital Ground. See the Power-Supply Bypassing and Layout Considerations section. E xter nal S ync Inp ut has an i nter nal 3M Ω r esi stor ...

Page 8

HDTV Continuously Variable Anti-Aliasing Filters Table 1. Clamp Levels CLAMP LEVEL INPUT SIGNAL FORMAT CHANNEL 1 CHANNEL 2 CHANNEL Low Low S CVBS Y C Low (sync on b ...

Page 9

MAX7469 when driving an ADC or video decoder with an input range the same as the input to the MAX7469. For added flexibility, the MAX7469 accepts input signals with twice the standard video-signal range, which can be used for driving ...

Page 10

HDTV Continuously Variable Anti-Aliasing Filters START and STOP Conditions A master device initiates communication by issuing a START condition, a high-to-low transition on SDA with SCL high (Figure 2). The master terminates transmission by a STOP condition (see the Acknowledge ...

Page 11

Acknowledge Bit (ACK) and Not-Acknowledge Bit Successful data transfers are acknowledged with an acknowledge bit (ACK not-acknowledge bit (NACK). Both the master and the MAX7469/MAX7470 (slave) generate acknowledge bits. To generate an acknowledge, the receiving device must pull ...

Page 12

HDTV Continuously Variable Anti-Aliasing Filters Command Byte (Write Cycle) A write cycle begins with the bus master issuing a START condition followed by 7 address bits (Figure 5) and 1 write bit (R/W = 0). After successfully receiving its address, ...

Page 13

Figures 6 and 7 show examples of write sequences. In read mode (R/W = 1), the MAX7469/MAX7470 write the contents of the control/status or frequency registers to the bus. When the command byte indicates a ...

Page 14

HDTV Continuously Variable Anti-Aliasing Filters SCL SDA SDA IN TO MAX7469/MAX7470 DIRECTION START SCL (CONT SDA (CONT) SDA DIRECTION Sr Figure 8. Basic Read Sequence selected in the command byte. Figure 8 shows ...

Page 15

The MAX7469/MAX7470 are compatible with existing systems supporting standard I tions. The general call address is ignored, and CBUS formats are not supported. The device’s address is 2 compatible with 7-bit I C addressing protocol only; 10- ...

Page 16

HDTV Continuously Variable Anti-Aliasing Filters planes. The board has 21, 15-mil, plated-through via holes between the top, bottom, and ground plane lay- ers. Thermocouple measurements confirm device tem- peratures to be safely within maximum limits. Y/G IN1 0.1μF 75Ω P ...

Page 17

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 17 © 2007 Maxim Integrated Products ...

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