19-3429; Rev 0; 9/04
MAX7452 Evaluation Kit
General Description
The MAX7452 evaluation kit (EV kit) is a fully assembled
and tested surface-mount circuit board that contains
the MAX7452. The MAX7452 is a low-cost, high-perfor-
mance, complete front-end video-signal conditioner
with automatic gain control (AGC) and a user-
adjustable back-porch clamp. The device includes an
out-of-band noise filter, back-porch clamp, loss-of-sync
(LOS) detector, ±6dB of AGC, and an output buffer
capable of driving either a 150Ω video load or a high-
impedance load. These features optimize the video
signal quality for further video processing through a
crosspoint device or video decoder. The EV kit oper-
ates from a single +5V power supply.
♦
Single +5V Supply Operation
♦
Adjustable Back-Porch Clamp
♦
Output Buffer Drives Standard Video Load
♦
Jumper-Selectable Output Buffer Gain of 0dB or
+6dB
♦
Input Fault Detection with LOS Output
♦
AGC (±6dB Range)
♦
Jumper-Selectable AGC Enable/Disable
♦
Standard 75Ω Input/Output Termination
♦
Jumper-Selectable Input/Output Termination
♦
Surface-Mount Components
♦
Fully Assembled and Tested
Features
Evaluates: MAX7452
Component List
DESIGNATION
C1
QTY
1
DESCRIPTION
1µF
±10%,
10V X5R ceramic
capacitor (0603)
TDK C1608X5R1A105K
0.1µF
±10%,
25V X7R ceramic
capacitors (0603)
TDK C1608X7R1E104K
75Ω PC board mount BNC
connectors
2-pin headers
3-pin headers
75Ω
±1%
resistors (0805)
MAX7452ESA (8-pin SO-EP)
Shunts
MAX7452 PC board
PART
MAX7452EVKIT
Ordering Information
TEMP RANGE
0°C to +70°C
IC PACKAGE
8 SO-EP*
*EP
= Exposed paddle.
Quick Start
Recommended Equipment
• +5VDC power supply
• Adjustable reference voltage (1V to 3V) or power sup-
ply
• Video-signal generator (e.g., Tektronix TG-2000)
• Video measurement equipment (e.g., Tektronix VM-
700A)
C2, C3
2
IN, OUT
JU1, JU2
JU3, JU4
R1, R2
U1
—
—
2
2
2
2
1
4
1
Procedure
The MAX7452 EV kit is fully assembled and tested.
Follow these steps to verify board operation.
Do not
turn on the power supply until all connections are
completed:
1) Verify that a shunt is installed across jumper JU1
(75Ω input termination).
2) Verify that a shunt is not installed across jumper
JU2 (75Ω output series termination).
3) Verify that a shunt is installed across pins 1 and 2 of
jumper JU3 (gain = 2).
4) Verify that a shunt is installed across pins 2 and 3 of
jumper JU4 (AGC enabled).
5) Connect the output of the video-signal generator to
the IN BNC connector on the MAX7452 EV kit.
Component Suppliers
SUPPLIER
TDK
PHONE
FAX
WEBSITE
www.component
.tdk.com
847-803-6100 847-390-4405
Note:
Indicate that you are using the MAX7452 EV kit when
contacting this supplier.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
