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 2VP-P into two standard 150Ωloads.
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 75Ωand the output terminals are
75Ωback-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 150ΩStandard Video
Loads with a +6dB Gain
♦Standard-Definition Television Video Filter
♦AC- or DC-Coupled Inputs and Outputs
♦Standard 75ΩInput/Output Terminations
♦Also Evaluates the MAX11502
(after IC replacement)
♦Surface-Mount Components
♦Fully Assembled and Tested
Evaluates: MAX11501/MAX11502
MAX11501 Evaluation Kit
________________________________________________________________
Maxim Integrated Products
1
19-0980; Rev 0; 9/07
Component List
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.
Ordering Information
Component Suppliers
+
Denotes lead-free and RoHS-compliant.
PART TYPE
MAX11501EVKIT+ EV Kit
DESIGNATION QTY DESCRIPTION
C1 1
1µF ±10%, 16V X7R ceramic
capacitor (0603)
Murata GRM188R71C105K
C2–C5 4
0.1µF ±10%, 16V X7R ceramic
capacitors (0603)
Murata GRM188R71C104K
C6–C9 4
220µF ±20%, 6.3V OS-CON
capacitors (8mm x 6.9mm)
SANYO 6SVPA220MAA
JU1–JU12 12 2-pin headers
R1–R7 7 75Ω ±1% resistors (0603)
R8, R9 2 150Ω ±1% resistors (0603)
R10, R11, R12 3 820kΩ ±5% resistors (0603)
R13, R14, R15 3 120kΩ ±5% resistors (0603)
DESIGNATION QTY DESCRIPTION
U1 1
Maxim low-cost, 3-channel,
standard-definition video filter
MAX11501USA+ (8-pin SO)
CIN, COUT,
CVBSIN,
CVBSOUT1,
CVBSOUT2,
YIN, YOUT
775Ω BNC PCB mount connectors
GND 2 Black PC mini test points
IN1, IN2, IN3,
OUT1, OUT2,
OUT3
6 Red PC mini test points
— 12 Shunts
— 1 PCB: MAX11501 Evaluation Kit+
SUPPLIER PHONE WEBSITE
Murata Mfg. Co., Ltd. 770-436-1300 www.murata.com
SANYO NA Corp. 619-661-6835 www.sanyodevice.com
Note: Indicate that you are using the MAX11501 when contacting
these component suppliers.
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
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.
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 2VP-P video signal into two standard 150Ωloads.
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 75Ωload. This is equivalent to driving two sets
of 150Ωloads 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 75Ωterminated and the video out-
put terminals are each back-terminated with 75Ω.
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.
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.
MAX11501 Evaluation Kit
2 _______________________________________________________________________________________
Table 1. JU1, JU2, and JU3 Jumper
Selection (CVBSIN, YIN, and CIN)
*
Default position.
SHUNT POSITION COUPLING CONFIGURATION
Installed DC-coupling
Not installed* AC-coupling
Table 2. JU4–JU7 Jumper Selection
(CVBSOUT1, CVBSOUT2, YOUT, and COUT)
*
Default position.
SHUNT POSITION COUPLING CONFIGURATION
Installed DC-coupling
Not installed* AC-coupling
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.
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
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.
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.
Evaluates: MAX11501/MAX11502
MAX11501 Evaluation Kit
_______________________________________________________________________________________ 3
Table 3. JU8 and JU9 Jumper Selection
(OUT2 and OUT3)
*
YOUT and COUT are terminated with a 75
Ω
load.
**
Default position.
SHUNT POSITION OUTPUT LOAD
Installed 75Ω*
Not installed** 150Ω
Table 4. JU10, JU11, and JU12 Jumper
Selection (IN1, IN2, and IN3)
*
Default position.
SHUNT POSITION DC BIAS LEVEL
Installed DC bias enabled
(use for bipolar signals)
Not installed* DC bias disabled
(use for unipolar signals)
Evaluates: MAX11501/MAX11502
MAX11501 Evaluation Kit
4 _______________________________________________________________________________________
MAX11501
U1
VCC
VCC
VCC
JU1
C3
0.1μF
IN1
R13
120kΩ
R1
75Ω
1%
R10
820kΩ
JU10
C1
1μF
C2
0.1μF
VCC
4
8
7
6
GND
CVBSIN
GND
5
IN1
1
VCC
JU2
C4
0.1μF
IN2
R14
120kΩ
R2
75Ω
1%
R11
820kΩ
JU11
YIN IN2
2
VCC GND
JU3
C5
0.1μF
IN3
R15
120kΩ
R3
75Ω
1%
R12
820kΩ
JU12
CIN
COUT
IN3
3
GND
R9
150Ω
1%
R7
75Ω
1%
OUT3
OUT3
JU9
JU7
C9
220μF
YOUT
R8
150Ω
1%
R6
75Ω
1%
OUT2
OUT2
JU8
JU6
C8
220μF
CVBSOUT2
R5
75Ω
1%
OUT1
OUT1
JU5
C7
220μF
CVBSOUT1
R4
75Ω
1%
JU4
C6
220μF
Figure 1. MAX11501 EV Kit Schematic
Evaluates: MAX11501/MAX11502
MAX11501 Evaluation Kit
_______________________________________________________________________________________ 5
Figure 2. MAX11501 EV Kit Component Placement Guide—Component Side
Evaluates: MAX11501/MAX11502
MAX11501 Evaluation Kit
6 _______________________________________________________________________________________
Figure 3. MAX11501 EV Kit PCB Layout—Component Side
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 _____________________
7
© 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.
Evaluates: MAX11501/MAX11502
MAX11501 Evaluation Kit
Figure 4. MAX11501 EV Kit PCB Layout—Solder Side
