19-0980; Rev 0; 9/07
MAX11501 Evaluation Kit
General Description
The MAX11501 evaluation kit (EV kit) is a fully assembled
and tested surface-mount printed-circuit board (PCB)
that contains a MAX11501 IC. The MAX11501 is a triple
video filter and buffer for standard-definition television
(SDTV) applications. The filter’s passband is typically
8.6MHz. The MAX11501 includes a +6dB output buffer
capable of driving 2V
P-P
into two standard 150Ω loads.
The video input and output signals on the EV kit can be
AC- or DC-coupled. The MAX11501 video input termi-
nals are terminated at 75Ω and the output terminals are
75Ω back-terminated. The EV kit operates from a single
5V DC power supply. The MAX11501 EV kit can also
evaluate the MAX11502 IC. Request a free sample from
the factory when ordering the MAX11501 EV kit.
Features
♦
Single 5V Supply Operation
♦
Output Buffer Drives Two 150Ω Standard Video
Loads with a +6dB Gain
♦
Standard-Definition Television Video Filter
♦
AC- or DC-Coupled Inputs and Outputs
♦
Standard 75Ω Input/Output Terminations
♦
Also Evaluates the MAX11502
(after IC replacement)
♦
Surface-Mount Components
♦
Fully Assembled and Tested
Evaluates: MAX11501/MAX11502
Ordering Information
PART
MAX11501EVKIT+
+Denotes
lead-free and RoHS-compliant.
TYPE
EV Kit
Component List
DESIGNATION
C1
QTY
1
DESCRIPTION
1µF ±10%, 16V X7R ceramic
capacitor (0603)
Murata GRM188R71C105K
0.1µF ±10%, 16V X7R ceramic
capacitors (0603)
Murata GRM188R71C104K
220µF ±20%, 6.3V OS-CON
capacitors (8mm x 6.9mm)
SANYO 6SVPA220MAA
2-pin headers
75Ω ±1% resistors (0603)
150Ω ±1% resistors (0603)
820kΩ ±5% resistors (0603)
120kΩ ±5% resistors (0603)
DESIGNATION
U1
CIN, COUT,
CVBSIN,
CVBSOUT1,
CVBSOUT2,
YIN, YOUT
GND
IN1, IN2, IN3,
OUT1, OUT2,
OUT3
—
—
QTY
1
DESCRIPTION
Maxim low-cost, 3-channel,
standard-definition video filter
MAX11501USA+ (8-pin SO)
C2–C5
4
7
75Ω BNC PCB mount connectors
C6–C9
JU1–JU12
R1–R7
R8, R9
R10, R11, R12
R13, R14, R15
4
12
7
2
3
3
2
6
12
1
Black PC mini test points
Red PC mini test points
Shunts
PCB: MAX11501 Evaluation Kit+
Component Suppliers
SUPPLIER
Murata Mfg. Co., Ltd.
SANYO NA Corp.
PHONE
WEBSITE
770-436-1300 www.murata.com
619-661-6835 www.sanyodevice.com
Note:
Indicate that you are using the MAX11501 when contacting
these component suppliers.
________________________________________________________________
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.
MAX11501 Evaluation Kit
Evaluates: MAX11501/MAX11502
Quick Start
Recommended Equipment
Before beginning, the following equipment is needed:
• 5V, 150mA DC power supply (VCC)
•
•
Video signal generator
(e.g., Tektronix TG-2000 or similar)
The appropriate video measurement equipment
The MAX11501 EV kit has three input channels to
accept a full set of component video input signals.
Each output from the MAX11501 EV kit is capable of
driving a 75Ω load. This is equivalent to driving two sets
of 150Ω loads in parallel.
All the input and output signals on the MAX11501 EV kit
can be configured for AC- or DC-coupling. The EV kit’s
input terminals are 75Ω terminated and the video out-
put terminals are each back-terminated with 75Ω.
Procedure
The MAX11501 EV kit is fully assembled and tested.
Follow the steps below to verify board operation.
Caution: Do not turn on the power supply until all
connections are completed.
1) Verify that no shunts are installed across jumpers
JU1, JU2, and JU3 (AC-coupled inputs).
2) Verify that no shunts are installed across jumpers
JU4–JU7 (AC-coupled outputs).
3) Verify that no shunts are installed across jumpers
JU8 and JU9 (normal operating mode).
4) Verify that no shunts are installed across jumpers
JU10, JU11, and JU12 (no DC bias input).
5) Connect the output of the video signal generator to
the CVBSIN BNC connector on the MAX11501 EV kit.
6) Connect the CVBSOUT1 BNC connector on the EV
kit to the input of the video measurement equipment.
7) Connect the power-supply ground to the GND pad
on the EV kit.
8) Connect the 5V supply to the VCC pad on the EV kit.
9) Set the video signal generator for the desired video
input signal. Since the input is AC-coupled and not
biased, the signal should be a unipolar signal such
as R, G, B, or Y.
10) Turn on the power supply and enable the video sig-
nal generator.
11) Analyze the video output signal.
Jumper Selection
Input Coupling (CVBSIN, YIN, and CIN)
The MAX11501 IC features a transparent clamp at the
video inputs that allows either AC- or DC-coupling. If the
input signal remains above ground, the transparent clamp
is inactive, offering true DC input coupling. If the signal
drops below ground, the inputs must be AC-coupled. The
transparent clamp sets the sync tip just below ground.
The MAX11501 EV kit provides an option to configure
the MAX11501 inputs to AC- or DC-coupling. Jumpers
JU1, JU2, and JU3 configure the input coupling for the
MAX11501 EV kit. See Table 1 for shunt positions.
Table 1. JU1, JU2, and JU3 Jumper
Selection (CVBSIN, YIN, and CIN)
SHUNT POSITION
Installed
Not installed*
COUPLING CONFIGURATION
DC-coupling
AC-coupling
*Default
position.
Output Coupling (CVBSOUT1,
CVBSOUT2, YOUT, and COUT)
The MAX11501 EV kit provides an option to configure
the MAX11501 outputs to AC- or DC-coupling. Jumpers
JU4–JU7 configure the output coupling for the
MAX11501 EV kit. See Table 2 for shunt positions.
Detailed Description
The MAX11501 EV kit is a fully assembled and tested
surface-mount PCB that contains a MAX11501 IC. The
MAX11501 is a triple video filter and buffer for SDTV
applications. The MAX11501 filter typically has 3dB
attenuation at 8.6MHz and 50dB attenuation at 27MHz.
The device includes a +6dB output buffer capable of dri-
ving a 2V
P-P
video signal into two standard 150Ω loads.
Table 2. JU4–JU7 Jumper Selection
(CVBSOUT1, CVBSOUT2, YOUT, and COUT)
SHUNT POSITION
Installed
Not installed*
COUPLING CONFIGURATION
DC-coupling
AC-coupling
*Default
position.
2
_______________________________________________________________________________________
MAX11501 Evaluation Kit
Output Channel 2 and Channel 3 Load
(OUT2 and OUT3)
The MAX11501 EV kit provides an option to demon-
strate the dual-load capability on output channels 2
and 3 of the MAX11501. Jumpers JU8 and JU9 config-
ure channels 2 and 3 output loads, respectively, on the
MAX11501 EV kit. See Table 3 for shunt positions.
has to be applied after the AC-coupling capacitor to
ensure that the clamp never operates. A 590mV DC
bias voltage can be applied to the MAX11501 IC inputs
by installing shunts across jumpers JU10, JU11, or
JU12. To configure the inputs to a different DC bias
voltage, replace resistors R13, R14, or R15. Refer to the
MAX11501 IC data sheet for the DC bias voltage calcu-
lation. See Table 4 for input clamp configuration.
Evaluates: MAX11501/MAX11502
Table 3. JU8 and JU9 Jumper Selection
(OUT2 and OUT3)
SHUNT POSITION
Installed
Not installed**
OUTPUT LOAD
75Ω*
150Ω
Table 4. JU10, JU11, and JU12 Jumper
Selection (IN1, IN2, and IN3)
SHUNT POSITION
Installed
Not installed*
DC BIAS LEVEL
DC bias enabled
(use for bipolar signals)
DC bias disabled
(use for unipolar signals)
*YOUT
and COUT are terminated with a 75
Ω
load.
**Default
position.
DC Bias for YPbPr Signals
When configuring the EV kit video inputs for AC-coupled
operation, the correct DC bias point has to be chosen,
depending on the input signal. Unipolar signals, such
as R, G, B, and Y, are biased correctly using the
MAX11501 internal transparent clamp. If the unipolar
signals exceed the voltage defined in the IC data
sheet, AC-coupling is recommended. For bipolar sig-
nals, such as Pb and Pr, a constant DC bias voltage
*Default
position.
MAX11502 Evaluation
The MAX11501 EV kit can also evaluate the MAX11502
IC. To evaluate the MAX11502, replace the IC (U1) with
the MAX11502 IC. Refer to the MAX11501/MAX11502
IC data sheet for additional information.
_______________________________________________________________________________________
3
MAX11501 Evaluation Kit
Evaluates: MAX11501/MAX11502
VCC
JU4
VCC
C1
1μF
GND
VCC
C2
0.1μF
5
GND
4
V
CC
R4
75Ω
1%
C6
220μF
CVBSOUT1
U1
R10
820kΩ
JU5
OUT1
OUT1
8
R5
75Ω
1%
C7
220μF
CVBSOUT2
MAX11501
JU1
C3
0.1μF
CVBSIN
R1
75Ω
1%
JU2
C4
0.1μF
YIN
R2
75Ω
1%
R13
120kΩ
JU10
IN1
1
IN1
OUT2
R11
820kΩ
OUT2
7
JU8
GND
IN2
2
IN2
OUT3
OUT3
6
JU9
R9
150Ω
1%
IN3
R7
75Ω
1%
R8
150Ω
1%
JU6
R6
75Ω
1%
C8
220μF
YOUT
VCC
R14
120kΩ
JU11
JU7
C9
220μF
COUT
VCC
GND
JU3
C5
0.1μF
CIN
R3
75Ω
1%
R15
120kΩ
R12
820kΩ
JU12
IN3
3
Figure 1. MAX11501 EV Kit Schematic
4
_______________________________________________________________________________________
MAX11501 Evaluation Kit
Evaluates: MAX11501/MAX11502
Figure 2. MAX11501 EV Kit Component Placement Guide—Component Side
_______________________________________________________________________________________
5
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