MAX9532EVKIT+ [MAXIM]
Fully Assembled and Tested;
| 型号： | MAX9532EVKIT+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Fully Assembled and Tested |
| 文件： | 总4页 (文件大小：90K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-4524; Rev 0; 3/09
MAX9532 Evaluation Kit
Evluates:MAX9532
General Description
Features
The MAX9532 evaluation kit (EV kit) is a fully assembled
and tested surface-mount circuit board that evaluates
the MAX9532 IC. The MAX9532 amplifies standard-
definition video signals and sets the video black level
near ground while consuming minimal power. The
MAX9532 also provides integrated short-to-battery pro-
tection allowing the output of the device to survive
shorts up to 18V. The EV kit operates from a 3V to 3.6V
single power supply.
o Single 3V to 3.6V Supply Operation
o Short-to-Battery Protection on Video Output
(Up to 18V)
o DC-Coupled Input with Option for AC-Coupling
o DC-Coupled Output
o Video Output Black Level Set Near Ground
o Reconstruction Filter with 42dB Attenuation
The MAX9532 provides an internal fixed gain of 4V/V
and has an internal reconstruction filter that typically
has 1dꢀ passband flatness of 9.5MꢁH and 42dꢀ
attenuation at 27MꢁH. The MAX9532 EV kit accepts a
at 27MHz and 1dB Passꢀand to ꢁ.ꢂMHz
o Internal Preset Gain of 4V/V
o Fully Assemꢀled and Tested
o Lead(Pꢀ)-free and RoHS Compliant
1V
input full-scale video signal and attenuates it
P-P
down to 0.5V
(nominal), then provides an output full-
P-P
scale video signal of 2V
(nominal).
P-P
Ordering Information
PART
TYPE
MAX9532EVKIT+
EV Kit
+Denotes lead(Pb)-free and RoꢁS compliant.
Component List
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
C1P, VSS
2
Test points
0.01µF 10ꢂ, 50V X7R ceramic
capacitors (0603)
Murata GRM188R71ꢁ103K
TDK C1608X7R1ꢁ103K
10µF 20ꢂ, 6.3V X7R ceramic
capacitor (0805)
Murata GRM21ꢀR70J106K
TDK C2012X7R0J106K
C6, C7
2
1
C1
ꢀNC 75_ PCꢀ vertical-mount
connectors
IN, OUT
2
0.1µF 10ꢂ, 50V X7R ceramic
capacitors (0603)
Murata GRM188R71ꢁ104K
TDK C1608X7R1ꢁ104K
R1, R6
R2, R3
R4, R5
2
2
2
37.4_ 1ꢂ resistors (0603)
75_ 1ꢂ resistors (0603)
0_ resistors (0603)
C2, C3
C4, C5
2
2
1µF 10ꢂ, 16V X7R ceramic
capacitors (0603)
Murata GRM188R71C105K
TDK C1608X7R1C105K
Single-channel video filter amplifier
U1
®
(10 µMAX )
1
1
Maxim MAX9532AUꢀ+
—
PCꢀ: MAX9532 Evaluation Kit+
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Component Suppliers
SUPPLIER
PHONE
WEBSITE
www.murata-northamerica.com
www.component.tdk.com
Murata Electronics North America, Inc.
TDK Corp.
770-436-1300
847-803-6100
Note: Indicate that you are using the MAX9532 when contacting these component suppliers.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-62ꢁ-4642,
or visit Maxim’s weꢀsite at www.maxim-ic.com.
MAX9532 Evaluation Kit
nal), and provides an output full-scale video signal of
2V (nominal).
Quick Start
Recommended Equipment
3V to 3.6V, 500mA DC power supply (VDD)
Video signal generator
P-P
Video input and output signals from the EV kit are DC-
coupled, eliminating large DC-blocking capacitors. The
input of the EV kit has a 75Ω termination to ground and
the output has a 75Ω back-termination resistor.
•
•
•
Video measurement equipment (e.g., Tektronix VM-
700T)
The input of the MAX9532 can be directly connected to
the output of a video DAC. The MAX9532 also features
a transparent input sync-tip clamp, allowing AC-cou-
pling of input signals with different DC biases.
Procedure
The MAX9532 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.
Short-Circuit and Short-to-Battery
Protection
The MAX9532 EV kit circuit includes a 75Ω back-termi-
nation resistor that limits short-circuit current when an
external short is applied to the video output. The
MAX9532 also features an internal output short-circuit
protection to prevent device damage in prototyping
and applications where the amplifier output can be
directly shorted to ground.
1) Connect the power supply ground to the GND pad
on the EV kit.
2) Connect the 3V to 3.6V supply to the VDD pad on
the EV kit.
3) Connect the output of the video signal generator to
the IN ꢀNC connector on the EV kit. The video signal
must be biased such that the sync tip is at ground;
refer to Application Note 4028: ꢁow to Level Shift
Video Signals for DC-Coupled Video Amplifiers/Filters
for more information on level shifting video signals.
Evluates:MAX9532
To protect the device from output short circuits to volt-
ages higher than the supply voltage (VDD), the MAX9532
utiliHes an internal switch in series with the amplifier out-
put. When the JACKSENSE input detects that the output
connector of the circuit is shorted to the battery voltage
(up to 18V) higher than the internal 8V threshold, an inter-
nal comparator disables the switch in 10µs (typ) prevent-
ing the MAX9532 from being damaged.
4) Connect the OUT ꢀNC connector on the EV kit to
the input of the video measurement equipment.
5) Set the video signal generator for the desired video
input signal. This signal must contain sync information.
After the output is shorted to a battery, the output
immediately resumes normal operation when the short
is removed within 1ms. When the output is shorted to
the battery for longer than 1ms, the output resumes nor-
mal operation 10ms after the short is removed.
6) Turn on the power supply and enable the video sig-
nal generator.
7) AnalyHe the video output signal with the VM-700T
video measurement equipment.
Detailed Description of Hardware
AC-Coupled Input
The default setting of the MAX9532 EV kit is set for a
DC-coupled input; however, this kit is configured for an
AC-coupled input as well. To change the input setting
to AC-coupled, remove R4 and utiliHe the 0.1µF ceram-
ic capacitor installed at C3.
The MAX9532 EV kit is a fully assembled and tested sur-
face-mount circuit board that evaluates the MAX9532
IC. The MAX9532 amplifies and sets the black level near
ground for standard-definition video signals while con-
suming minimal power. The MAX9532 also provides
integrated short-to-battery protection, allowing the out-
put of the device to survive shorts up to 18V. The EV kit
operates from a 3V to 3.6V single power supply.
Interfacing to Video DACs that Produce
Video Signals Other than 1V
P-P
The MAX9532 EV kit is designed to work with devices
The MAX9532 has an internal reconstruction filter that
smoothes the steps and reduces the spikes on the
video signal from the video digital-to-analog converter
(DAC). The reconstruction filter typically has 42dꢀ
attenuation at 27MꢁH and a 1dꢀ passband flatness to
9.5MꢁH.
that generate 1V
video signals at the output of the
P-P
video DAC. The EV kit takes the 1V
video signal
P-P
applied at IN and attenuates it by 1/2, through resistor-
dividers R6 and R1, to provide the necessary 0.5V
signal at the input pin of the MAX9532 IC.
P-P
When using a device that provides a video signal other
than 1V at its output, R6 must be replaced with a 0Ω
The MAX9532 provides an internal fixed gain of 4V/V.
The MAX9532 EV kit accepts an input full-scale video
P-P
resistor and an appropriate termination must be applied
at R1.
signal of 1V
and attenuates it down to 0.5V
(nomi-
P-P
P-P
2
_______________________________________________________________________________________
MAX9532 Evaluation Kit
Evluates:MAX9532
Figure 1. MAX9532 EV Kit Schematic
_______________________________________________________________________________________
3
MAX9532 Evaluation Kit
Evluates:MAX9532
Figure 2. MAX9532 EV Kit Component Placement Guide—
Components Side
Figure 3. MAX9532 EV Kit PCꢀ Layout—Component Side
Figure 4. MAX9532 EV Kit PCꢀ Layout—Solder 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.
4 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2009 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.
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