19-3002; Rev 1; 4/08
KIT
ATION
EVALU
E
BL
AVAILA
Three-Channel,
Standard-Definition Video Filters
General Description
Features
o
Three-Channel 5th-Order 9MHz Filter for
Standard-Definition Video
o
+6dB Output Buffers
o
Transparent Input Clamp
o
AC- or DC-Coupled Inputs
o
AC- or DC-Coupled Outputs
o
Flat Passband Response (MAX11501)
o
+0.8dB Peaking Passband Response (MAX11502)
on All Channels
o
12kV HBM ESD Protection on Outputs
o
Single +5V Power Supply
o
Small 8-Pin SO Package
MAX11501/MAX11502
The MAX11501/MAX11502 integrated filters offer three
channels of 5th-order filters for standard-definition
video and include +6dB output buffers on each chan-
nel. These video filters are ideal for anti-aliasing and
DAC smoothing in applications such as set-top boxes,
security systems, digital video recorders (DVRs), DVD
players, and personal video recorders.
The MAX11501/MAX11502 video inputs feature a trans-
parent clamp compatible with AC- and DC-coupled
input signals and allow DAC outputs to be directly cou-
pled. The 5th-order filters provide a typical -3dB band-
width of 8.6MHz (MAX11501) and 8.9MHz (MAX11502)
and offer either a flat passband response (MAX11501)
or a +0.8dB peaking passband response (MAX11502)
on all channels.
Each channel includes an output buffer with a gain of
+6dB capable of driving a full 2V
P-P
video signal into
two standard 150Ω (75Ω back-terminated) video loads.
The buffers drive either AC- or DC-coupled loads and
assure a blanking level of below 1V after the back-
match resistor.
The MAX11501/MAX11502 operate from a single +5V
supply and are available in the upper commercial 0°C
to +85°C temperature range. These devices are avail-
able in small 8-pin SO packages.
Ordering Information
PART
MAX11501USA+
MAX11502USA+
PIN-
PACKAGE
8 SO
8 SO
FREQUENCY
RESPONSE
Flat
HF Boost
+Denotes
a lead-free package.
Note:
All devices are specified over the 0°C to +85°C operat-
ing temperature range.
Applications
Set-Top Box Receivers
Digital Video Recorders (DVRs)
Security Video Systems
SDTV
DVD Players
Personal Video Recorders
Video On-Demand
TRANSPARENT
CLAMP
IN1
V
CC
Block Diagram
MAX11501
MAX11502
+6dB
9MHz 5TH-ORDER
BUTTERWORTH
FILTER
BUFFER
OUT1
IN2
+6dB
OUT2
IN3
+6dB
OUT3
Typical Operating Circuit and Pin Configuration appear at end
of data sheet.
GND
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Three-Channel,
Standard-Definition Video Filters
MAX11501/MAX11502
ABSOLUTE MAXIMUM RATINGS
V
CC
to GND ..............................................................-0.3V to +6V
All other pins to GND ...-0.3V to the lower of (V
CC
+ 0.3V) and +6V
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SO (derate 5.9mW/°C above +70°C)................. 470mW
Maximum Current into any Pin Except V
CC
and GND......±50mA
Operating Temperature Range
MAX1150_USA+ .................................................0°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead temperature (soldering, 10s) ..................................+300°C
Junction Temperature ......................................................+150°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
(V
CC
= +5V, R
LOAD
= 150Ω to GND, C
IN
= 0.1µF, T
A
= 0°C to +85°C, frequency response is relative to 100kHz, unless otherwise noted.)
PARAMETER
-1dB Bandwidth
-3dB Bandwidth
Stopband Attenuation
Low-Frequency Gain
Low-Frequency Gain Match
Input Voltage Range
Differential Gain
Differential Phase
Total Harmonic Distortion
Channel-to-Channel Crosstalk
Signal-to-Noise Ratio
Propagation Delay
Supply Voltage Range
Supply Current
Power-Supply Rejection Ratio
SYMBOL
f
1dB
f
3dB
A
SB
A
V
A
V(MATCH)
V
IN
dG
dφ
THD
X
TALK
SNR
t
PD
V
DD
I
CC
PSRR
No load
DC (all channels)
Referenced to GND if DC-coupled
All channels
All channels
V
OUT
= 1.8V
P-P
, f = 1MHz (all channels)
f = 1MHz
NTC-7 weighting, 100kHz, 4.2MHz
f = 4.5MHz
4.75
MAX11501
MAX11502
MAX11501
MAX11502
MAX11501, f = 27MHz
MAX11502, f = 27MHz
5.8
CONDITIONS
MIN
4.5
5
TYP
7.2
7.8
8.6
8.9
50
48
6.0
0.02
1.4
0.1
0.3
0.1
-80
80
76
5
18
60
5.25
26
6.2
MAX
UNITS
MHz
MHz
dB
dB
dB
V
%
Degrees
%
dB
dB
ns
V
mA
dB
2
_______________________________________________________________________________________
Three-Channel,
Standard-Definition Video Filters
Typical Operating Characteristics
(V
CC
= 5V, R
L
= 150Ω to GND, output DC-coupled, T
A
= +25°C.)
MAX11501
FREQUENCY RESPONSE
MAX11501 toc01
MAX11501/MAX11502
MAX11501
PASSBAND RESPONSE
MAX11501 toc02
MAX11501
GROUP DELAY
MAX11501 toc03
10
0
-10
RESPONSE (dB)
-20
-30
-40
-50
-60
-70
0.1
1
10
9
120
100
80
DELAY (ns)
6
RESPONSE (dB)
3
60
40
0
20
-3
100
0.1
1
FREQUENCY (MHz)
10
FREQUENCY (MHz)
0
0.1
1
10
100
FREQUENCY (MHz)
MAX11501
DIFFERENTIAL GAIN, NTSC
MAX11501 toc04
MAX11501
DIFFERENTIAL PHASE, NTSC
MAX11501 toc05
MAX11501
2T RESPONSE
MAX11501 toc06
0.2
0.4
DIFFERENTIAL GAIN (%)
0.1
DIFFERENTIAL PHASE (deg)
0.3
0.2
CH1
0.1
0
-0.1
0
CH2
-0.2
1
2
3
4
STEP
5
6
7
-0.1
1
2
3
4
STEP
5
6
7
200ns/div
CH1 = INPUT
CH2 = OUTPUT, AFTER BACKMATCH RESISTOR
MAX11501
MODULATED 12.5T RESPONSE
MAX11501 toc07
MAX11501
MULTIBURST RESPONSE
MAX11501 toc08
MAX11502
FREQUENCY RESPONSE
0
-10
RESPONSE (dB)
-20
-30
-40
-50
MAX11501 toc09
10
CH1
CH1
CH2
-60
CH2
CH1 = INPUT
CH2 = OUTPUT, AFTER BACKMATCH RESISTOR
400ns/div
CH1 = INPUT
CH2 = OUTPUT, AFTER BACKMATCH RESISTOR
10μs/div
-70
0.1
1
10
100
FREQUENCY (MHz)
_______________________________________________________________________________________
3
Three-Channel,
Standard-Definition Video Filters
MAX11501/MAX11502
Typical Operating Characteristics (continued)
(V
CC
= 5V, R
L
= 150Ω to GND, output DC-coupled, T
A
= +25°C.)
MAX11502
PASSBAND RESPONSE
MAX11501 toc10
MAX11502
GROUP DELAY
MAX11501 toc11
MAX11502
DIFFERENTIAL GAIN, NTSC
MAX11501 toc12
9
120
100
80
DELAY (ns)
0.2
DIFFERENTIAL GAIN (%)
6
RESPONSE (dB)
0.1
3
60
40
0
0
20
-3
0.1
1
FREQUENCY (MHz)
10
0
0.1
1
10
100
FREQUENCY (MHz)
-0.1
-0.2
1
2
3
4
STEP
5
6
7
MAX11502
DIFFERENTIAL PHASE, NTSC
MAX11501 toc13
MAX11502
2T RESPONSE
MAX11501 toc14
0.4
DIFFERENTIAL PHASE (deg)
0.3
0.2
CH1
0.1
0
CH2
-0.1
1
2
3
4
STEP
5
6
7
200ns/div
CH1 = INPUT
CH2 = OUTPUT, AFTER BACKMATCH RESISTOR
MAX11502
MODULATED 12.5T RESPONSE
MAX11501 toc15
MAX11502
MULTIBURST RESPONSE
MAX11501 toc16
CH1
CH1
CH2
CH2
400ns/div
CH1 = INPUT
CH2 = OUTPUT, AFTER BACKMATCH RESISTOR
10μs/div
CH1 = INPUT
CH2 = OUTPUT, AFTER BACKMATCH RESISTOR
4
_______________________________________________________________________________________
Three-Channel,
Standard-Definition Video Filters
Pin Description
PIN
1
2
3
4
5
6
7
8
NAME
IN1
IN2
IN3
V
CC
GND
OUT3
OUT2
OUT1
FUNCTION
Video Input Channel 1
Video Input Channel 2
Video Input Channel 3
Power Supply
Ground
Video Output Channel 3
Video Output Channel 2
Video Output Channel 1
output amplifier with a gain of two (see the
Typical
Operating Circuit).
The MAX11501 provides a flat pass-
band response and the MAX11502 features a +0.8dB
high-frequency boost at 5MHz on all channels to help
with system roll-off. Within the passband, each channel
amplifies the signal by two and adds 280mV of offset.
V
OUT
= (2 x V
IN
) + 0.28V
Typical voltage levels are shown in Figures 1 and 2.
MAX11501/MAX11502
Inputs
Transparent Clamps
All inputs feature transparent clamps to allow either AC
or DC input coupling. The clamp remains inactive while
the input signal is above ground, offering true DC input
coupling. If the signal goes below ground, as when the
signal is AC-coupled, the internal clamp sets the sync
tip at slightly below the ground level.
Detailed Description
Each channel of the MAX11501/MAX11502 contains a
transparent input clamp, an 8.6MHz (MAX11501) or
8.9MHz (MAX11502), 5th-order lowpass filter and an
2.28V
OUTPUT SIGNAL
MAX11501
MAX11502
IN_
1.0V
0.88V
OUT_
INPUT SIGNAL
0.3V
0.28V
0.0V
Figure 1. Typical AC-Coupled Signal
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