19-2803; Rev 1; 8/07
MAX7443 Evaluation Kit
General Description
The MAX7443 evaluation kit (EV kit) evaluates the
MAX7443, a low-cost triple-channel video reconstruction
filter for composite and S-video applications. The EV kit
operates from a single 5V supply. The MAX7443 EV kit
can also be used to evaluate the MAX7444, a similar
device with a high-frequency boost option.
Features
♦
5V Single Supply
♦
Compatible with Standard Video Test Equipment
♦
Surface-Mount Construction
♦
Fully Assembled and Tested
Evaluates: MAX7443/MAX7444
Ordering Information
PART
MAX7443EVKIT+
TYPE
EV Kit
Component List
DESIGNATION QTY
DESCRIPTION
1µF ±20%, 6.3V X5R ceramic
capacitor (0603)
Murata GRM188R60J106K
TDK C1608X5R0J105K
0.1µF ±10%, 16V X7R ceramic
capacitors (0603)
Murata GRM188R71C104K
TDK C1608X7R1C104KT
220µF ±20%, 6.3V aluminum
electrolytic capacitors
(6.3mm x 6.0mm)
SANYO 6EV220AX
3-pin headers
2-pin headers
75Ω ±1% resistors (0603)
200Ω ±1% resistors (0603)
162Ω ±1% resistors (0603)
Maxim triple-channel video
reconstruction filter and buffer for
composite and Y/C outputs
MAX7443ESA+ (8-pin SO-EP)
BNC PCB mount connectors
Shunts
PCB: MAX7443 Evaluation Kit+
C1
1
+Denotes
lead-free and RoHS-compliant.
Note:
To evaluate the other device in the family, the MAX7444,
request a free MAX7444ESA+ sample with the MAX7443 EV kit.
Quick Start
Recommended equipment
Before beginning, the following equipment is needed:
• Single 5V DC power supply
• Video signal generator (e.g., Tektronix TG 2000)
• Video measurement equipment (e.g., Tektronix
VM 700A)
C2, C6, C7
3
C3, C4, C5
3
JU1, JU2, JU3
JU4, JU5
R1–R5
R6, R7
R8, R9
3
2
5
2
2
Procedure
The MAX7443 EV kit is a fully assembled and tested
surface-mount board. Utilize the following steps to veri-
fy the board operation.
Caution: Do not turn on the
power supply until all connections are completed:
1) Verify that there are shunts installed on JU1 and
JU3 (pins 1-2) and JU2 (pins 2-3).
2) Verify that there are shunts across jumpers JU4 and
JU5.
3) Connect the luma output from the video signal
generator to the YIN BNC connector on the EV kit.
4) Connect the chroma output from the video signal
generator to the CIN BNC connector on the EV kit.
5) Connect the input of the video measurement equip-
ment to the YOUT, COUT, or CVOUT BNC connec-
tors on the EV kit.
U1
1
YIN, CIN,
YOUT, CVOUT,
COUT
—
—
5
5
1
Component Suppliers
SUPPLIER
Murata Mfg. Co., Ltd.
SANYO NA Corp.
TDK Corp.
PHONE
770-436-1300
619-661-6322
847-803-6100
www.sanyo.com
www.component.tdk.com
WEBSITE
www.murata.com
Note:
Indicate that you are using the MAX7443/MAX7444 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.
MAX7443 Evaluation Kit
Evaluates: MAX7443/MAX7444
6) Connect the 5V supply to the PCB pad labeled
VCC. Connect the pad labeled GND to the ground
of the power supply.
7) Set the signal generator for the desired video sig-
nal, such as multiburst.
8) Turn on the 5V DC power supply.
9) Analyze any of the output signals with the VM700A
video measurement.
for selecting the input from either a video generator or a
DAC (encoder). When interfacing to a video DAC or
encoder output, the 200Ω termination resistor is provid-
ed on the board and selected by changing jumpers
JU1 and JU3. A typical DAC termination resistor is
200Ω. If the full-scale DAC output current is different
than
≈5mA,
change the 200Ω resistor accordingly to
get 1V at the input of the MAX7443.
The MAX7443 EV kit incorporates jumper JU2 to
control the gain setting. Table 2 lists the JU2 functions.
Detailed Description
Jumper Selection
The MAX7443 EV kit provides options for evaluation
with a video signal generator output or a current output
video DAC (encoder). Table 1 lists the jumper settings
Evaluating MAX7444
The MAX7443 EV kit can be also used to evaluate the
MAX7444. To evaluate the MAX7444, replace the
MAX7443ESA+ with a MAX7444ESA+.
Table 1. Jumpers JU1, JU3, JU4, and JU5 Functions
JU1 SHUNT POSITION
1-2*
2-3
All other combinations
JU3 SHUNT POSITION
1-2*
2-3
INPUT TERMINATION (Ω)
75
200
Undefined
*Default
position.
Note:
To emulate a 200
Ω
DAC source resistor when driving from a 75
Ω
generator, remove jumpers JU4 and JU5. The 162
Ω
resistor
added to the standard 75
Ω
termination equals approximately 200
Ω
.
Table 2. JU2 Functions
JU2 SHUNT POSITION
1-2
2-3
Not installed
GSET PIN
Connected to VCC
Connected to GND
Not connected
GAIN (dB)
9.5
6
12
2
_______________________________________________________________________________________
MAX7443 Evaluation Kit
Evaluates: MAX7443/MAX7444
Figure 2. MAX7443 EV Kit Component Placement Guide—Top
Silkscreen
Figure 3. MAX7443 EV Kit PCB Layout—Component Side
Figure 4. MAX7443 EV Kit PCB Layout—Solder Side
Revision History
Pages changed at Rev 1: 1–4
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.
4
_____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2007 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products, Inc.
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