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MAX7453CSA+T

P1-P3P4-P5
General Description
The MAX7453 is a low-cost, triple-channel video recon-
struction filter for S-video and CVBS video-signal appli-
cations. This device is ideal for anti-aliasing and DAC
smoothing video applications such as set-top boxes,
DVD players, hard-disk recorders (HDRs), and personal
video recorders. This filter operates from a single +5V
supply. It is optimized for NTSC, PAL, and standard-defi-
nition TV (SDTV) video systems.
Each channel consists of a lowpass filter and an output
buffer capable of driving one (YOUT, COUT) or two
(CVOUT) standard 150Ω video loads. The output buffers
can drive either an AC or a DC load such that the blank-
ing level voltage after the backmatch resistor is less than
1V. The Y and C video inputs are summed to produce
the composite video output. The MAX7453 has a maxi-
mally flat frequency response.
The MAX7453 is available in an 8-pin SO package and is
fully specified over the commercial (0°C to +70°C) tem-
perature range.
Applications
Set-Top Boxes/HDRs/DVDs
Security Cameras/Digital Cameras
Game Consoles
Digital VCRs
Every Composite, S-Video Output for NTSC,
PAL, and SDTV
Features
♦ Triple-Channel Filter and Buffer for CVBS and
Y/C (S-Video) Video Signals
♦ Filter Response Ideal for NTSC, PAL, and
Interlaced SDTV Signals
♦ 42dB (typ) Stopband Attenuation at 27MHz
♦ -0.3dB (typ) Passband Response
♦ <1V Blanking Level Allows DC-Coupled Output
♦ CVOUT Drives Two 150Ω Video Loads
♦ YOUT and COUT Drive One 150Ω Video Load
♦ +5V Single-Supply Voltage
♦ 8-Pin SO Package
MAX7453
Triple-Channel Video Reconstruction Filter and
Buffer for Composite and Y/C Outputs
________________________________________________________________ Maxim Integrated Products 1
19-3269; Rev 0; 6/05
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.
EVALUATION KIT
AVAILABLE
D/A
CIN
LOWPASS
FILTER
LOWPASS
FILTER
YIN
D/A
Σ
COUT
CVOUT
YOUT
*
GND
V
CC
*
*
*
ENCODER
MAX7453
+6dB
+6dB
+6dB
Functional Diagram
Ordering Information
PART TEMP RANGE PIN-PACKAGE
MAX7453CSA 0°C to +70°C 8 SO
CVOUT
COUTCIN
1
2
8
7
YOUT
V
CC
N.C.
GND
YIN
SO
TOP VIEW
3
4
6
5
MAX7453
Pin Configuration
MAX7453
Triple-Channel Video Reconstruction Filter and
Buffer for Composite and Y/C Outputs
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
V
CC
to GND ...........................................................................+6V
All Other Pins to GND.................................-0.3V to (V
CC
+ 0.3V)
Maximum Current into Any Pin Except V
CC
and GND .....±50mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SO ....................................................................522.8mW
Operating Temperature Range...............................0°C to +70°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS
(V
CC
= +5V ±5%, C
L
= 0 to 20pF, all loads to GND for DC-couple, all loads to V
CC
/ 2 for AC-couple, C
YIN
= C
CIN
= 0.1µF,
R
YOUT
= 150Ω, R
COUT
= 150Ω, R
CVOUT
= 75Ω, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Passband Response f = 100kHz to 4.2MHz, relative to 100kHz -0.6 -0.27 0 dB
Stopband Attenuation A
SB
f = 27MHz 39 42 dB
Chroma/Luma Gain f = 3.58MHz, reference to CVOUT at 336kHz 96 98 100 %
Differential Gain dG 5-step modulated staircase 0.15 0.5 %
Differential Phase dθ 5-step modulated staircase 0.15 0.5 Degrees
Signal-to-Noise Ratio SNR
Peak signal (2V
P-P
) to RMS noise,
f = 100Hz to 50MHz
67 73 dB
Line-Time Distortion H
DIST
18µs, 100IRE bar 0.3 %
Field-Time Distortion V
DIST
130 lines, 18µs, 100IRE bar 0.5 %
Clamp Settling Time To ±1% 300 Lines
YOUT 0.60 0.8 0.95
CVOUT 0.60 0.8 0.95Output DC Clamp Level
COUT 1.44 1.6 1.95
V
Low-Frequency Gain Accuracy A
V
f = 100kHz, relative to 6dB -3.0 +2.0 %
Group-Delay Deviation Δt
g
Deviation from 100kHz to 4.1MHz 8 16 ns
Group-Delay Matching
t
g(MATCH)
Low-frequency channel-to-channel matching,
f = 100kHz for YOUT and COUT
2ns
Channel-to-Channel Crosstalk X
TALK
f = 100kHz to 3.58MHz 61 dB
Input Leakage Current I
IN
10 µA
Y
INP-P
1.2
Input Dynamic Swing
C
INP-P
0.9
V
P-P
SUPPLY
Supply Voltage Range V
CC
4.75 5.25 V
Supply Current I
CC
V
CC
= +5.25V, no load 65 85 mA
Power-Supply Rejection Ratio PSRR V
IN
= 100mV
P-P
, f = 0 to 3.5MHz 33 dB
MAX7453
Triple-Channel Video Reconstruction Filter and
Buffer for Composite and Y/C Outputs
_______________________________________________________________________________________ 3
AMPLITUDE vs. FREQUENCY
MAX7453 toc01
FREQUENCY (MHz)
AMPLITUDE (dB)
10
-70
-60
-50
-40
-30
-20
-10
0
10
-80
1 100
NORMALIZED TO 0dB
PASSBAND AMPLITUDE vs. FREQUENCY
MAX7453 toc02
FREQUENCY (MHz)
AMPLITUDE (dB)
1
-2.5
-2.0
-1.5
-1.0
-0.5
0
0.5
1.0
-3.0
0.1 10
NORMALIZED TO 0dB
PHASE RESPONSE vs. FREQUENCY
MAX7453 toc03
FREQUENCY (MHz)
PHASE (DEGREES)
1
-240
-200
-160
-120
-80
-40
0
40
-280
0.1 10
GROUP DELAY vs. FREQUENCY
MAX7453 toc04
FREQUENCY (MHz)
GROUP DELAY (ns)
1
50
55
60
65
70
75
80
85
90
40
45
0.1 10
2T RESPONSE (1IRE = 7.4mV)
MAX7453 toc05
100ns/div
YIN
200mV/div
YOUT
200mV/div
MEASURE AT
TERMINATION
MODULATED 12.5T RESPONSE
(1IRE = 7.14mV)
MAX7453 toc06
400ns/div
YIN
500mV/div
YOUT
500mV/div
MEASURE AT TERMINATION
SUPPLY CURRENT vs. TEMPERATURE
MAX7453 toc07
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
603510-15
52
54
56
58
60
62
64
66
68
70
50
-40 85
DIFFERENTIAL GAIN
DIFFERENTIAL PHASE
MAX7453 toc08
DIFFERENTIAL GAIN (%)
-0.3
-0.2
0.2
-0.1
0.1
0
0.3
1st 2nd 3rd 4th 5th 6th
DIFFERENTIAL PHASE (DEGREES)
-0.3
-0.2
0.2
-0.1
0.1
0
0.3
1st 2nd 3rd 4th 5th 6th
MULTIBURST RESPONSE
MAX7453 toc09
10μs/div
YIN
500mV/div
YOUT
500mV/div
MEASURED AT TERMINATION
Typical Operating Characteristics
(V
CC
= +5V, T
A
= +25°C, unless otherwise noted.)
P1-P3P4-P5

MAX7453CSA+T

Mfr. #:
Buy MAX7453CSA+T
Manufacturer:
Maxim Integrated
Description:
Multimedia ICs Video ICs 3Ch Video Reconstruction Filt
Lifecycle:
New from this manufacturer.
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