MAX7443EVKIT+ [MAXIM]
Compatible with Standard Video Test Equipment;
| 型号： | MAX7443EVKIT+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Compatible with Standard Video Test Equipment |
| 文件： | 总4页 (文件大小：97K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-2803; Rev 1; 8/07
MAX7443 Evaluation Kit
General Description
Features
♦ 5V Single Supply
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.
♦ Compatible with Standard Video Test Equipment
♦ Surface-Mount Construction
♦ Fully Assembled and Tested
Ordering Information
Component List
PART
TYPE
MAX7443EVKIT+
EV Kit
DESIGNATION QTY
DESCRIPTION
+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.
1µF 20ꢀ, ꢁ.3V X5ꢂ ceramic
capacitor (0ꢁ03)
Murata GꢂM188ꢂꢁ0J10ꢁK
TDK C1ꢁ08X5ꢂ0J105K
C1
1
3
3
Quick Start
0.1µF 10ꢀ, 1ꢁV X7ꢂ ceramic
capacitors (0ꢁ03)
Murata GꢂM188ꢂ71C104K
TDK C1ꢁ08X7ꢂ1C104KT
Recommended equipment
Before beginning, the following equipment is needed:
C2, Cꢁ, C7
C3, C4, C5
• Single 5V DC power supply
220µF 20ꢀ, ꢁ.3V aluminum
electrolytic capacitors
(ꢁ.3mm x ꢁ.0mm)
• Video signal generator (e.g., Tektronix TG 2000)
• Video measurement equipment (e.g., Tektronix
VM 700A)
SANYO ꢁEV220AX
JU1, JU2, JU3
JU4, JU5
ꢂ1–ꢂ5
3
2
5
2
2
3-pin headers
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:
2-pin headers
75Ω 1ꢀ resistors (0ꢁ03)
200Ω 1ꢀ resistors (0ꢁ03)
1ꢁ2Ω 1ꢀ resistors (0ꢁ03)
ꢂꢁ, ꢂ7
ꢂ8, ꢂ9
1) Verify that there are shunts installed on JU1 and
JU3 (pins 1-2) and JU2 (pins 2-3).
Maxim triple-channel video
reconstruction filter and buffer for
composite and Y/C outputs
MAX7443ESA+ (8-pin SO-EP)
U1
1
2) Verify that there are shunts across jumpers JU4 and
JU5.
YIN, CIN,
YOUT, CVOUT,
COUT
3) Connect the luma output from the video signal
generator to the YIN BNC connector on the EV kit.
5
BNC PCB mount connectors
4) Connect the chroma output from the video signal
generator to the CIN BNC connector on the EV kit.
—
—
5
1
Shunts
PCB: MAX7443 Evaluation Kit+
5) Connect the input of the video measurement equip-
ment to the YOUT, COUT, or CVOUT BNC connec-
tors on the EV kit.
Component Suppliers
SUPPLIER
PHONE
WEBSITE
www.murata.com
Murata Mfg. Co., Ltd.
SANYO NA Corp.
TDK Corp.
770-43ꢁ-1300
ꢁ19-ꢁꢁ1-ꢁ322
847-803-ꢁ100
www.sanyo.com
www.component.tdk.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
ꢁ) Connect the 5V supply to the PCB pad labeled
VCC. Connect the pad labeled GND to the ground
of the power supply.
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.
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.
The MAX7443 EV kit incorporates jumper JU2 to
control the gain setting. Table 2 lists the JU2 functions.
Detailed Description
Evaluating MAX7444
The MAX7443 EV kit can be also used to evaluate the
MAX7444. To evaluate the MAX7444, replace the
MAX7443ESA+ with a MAX7444ESA+.
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
Table 1. Jumpers JU1, JU3, JU4, and JU5 Functions
JU1 SHUNT POSITION
JU3 SHUNT POSITION
INPUT TERMINATION (Ω)
1-2*
2-3
1-2*
2-3
75
200
All other combinations
Undefined
*Default position.
Note: To emulate a 200Ω DAC source resistor when driving from a 75Ω generator, remove jumpers JU4 and JU5. The 162Ω resistor
added to the standard 75Ω termination equals approximately 200Ω.
Table 2. JU2 Functions
JU2 SHUNT POSITION
GSET PIN
GAIN (dB)
1-2
2-3
Connected to VCC
Connected to GND
Not connected
9.5
ꢁ
Not installed
12
2
_______________________________________________________________________________________
MAX7443 Evaluation Kit
VCC
VCC
JU2
1
VCC
GND
5
4
1
2
8
V
GSET
YOUT
CC
2
3
R1
75Ω
1%
C1
1μF
C2
0.1μF
C3
220μF
6.3V
YOUT
1
BNC
GND
YIN
U1
R4
75Ω
1%
2
R8
R2
75Ω
1%
C6
0.1μF
C4
220μF
6.3V
162Ω
MAX7443
YIN
1
JU1
CVOUT
1
1%
1
2
7
6
BNC
CVOUT
COUT
BNC
3
2
2
R6
200Ω
1%
R3
75Ω
1%
C5
220μF
6.3V
JU4
COUT
1
3
CIN
BNC
2
R5
75Ω
R9
162Ω
1%
C7
0.1μF
1%
CIN
2
1
JU3
1
2
BNC
3
R7
200Ω
1%
JU5
Figure 1. MAX7443 EV Kit Schematic
_______________________________________________________________________________________
3
MAX7443 Evaluation Kit
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 ꢂev 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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