19-0819; Rev 0; 5/07
MAX9507 Evaluation Kit/Evaluation System
General Description
The MAX9507 evaluation kit (EV kit) is a fully assembled
and tested surface-mount printed-circuit board (PCB)
that evaluates the MAX9507 DirectDrive
TM
video filter
amplifier. The MAX9507 amplifies standard-definition
video signals and sets the video black level near
ground while consuming minimal power. The EV kit
operates from a 1.7V to 2.625V single power supply
and accepts an input video signal of up to 1V
P-P
. The
EV kit includes an I
2
C/SMBus™-compatible interface,
which provides software control of the video filter, ana-
log switches, load detection, and other functions.
The MAX9507 evaluation system (EV system) consists of
the MAX9507 EV kit and the Maxim CMAXQUSB+ com-
mand module. A Windows
®
98/2000/XP-compatible
software program is also available for use with the EV
system and can be downloaded from Maxim’s website
(www.maxim-ic.com/evkitsoftware).
The Maxim CMAXQUSB+ command module provides
the I
2
C/SMBus interface and is connected to the com-
puter through the universal serial bus (USB) port. The
MAX9507 EV kit software provides a graphical user
interface (GUI) for exercising the MAX9507 features.
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Features
Single 1.7V to 2.625V Power-Supply Operation
Video Load Detection
DC-Coupled Input with Option for AC-Coupling
DC-Coupled Output
Video Output Black Level Set Near Ground
Selectable Reconstruction Filter with ±1dB
Passband to 7.3MHz and 48dB Attenuation at 27MHz
Internal Fixed Gain of 8V/V
Dual SPST Analog Switches
I
2
C/SMBus-Compatible Interface
Fully Assembled and Tested
Evaluate: MAX9507
Ordering Information
PART
MAX9507EVKIT+
MAX9507EVCMAXQU
+
TEMP IC
RANGE PACKAGE
COMMAND
MODULE
0°C to 16 TQFN
Not included
+70°C* (3mm x 3mm)
0°C to 16 TQFN
CMAXQUSB+
+70°C* (3mm x 3mm)
+Denotes
lead-free and RoHS-compliant.
*This
limited temperature range applies to the EV kit PCB only.
The MAX9507 IC temperature range is -40°C to +125°C.
Windows is a registered trademark of Microsoft Corp.
SMBus is a trademark of Intel Corp.
Note:
The Maxim CMAXQUSB+ command module is required
when using the MAX9507 EV kit software.
Component List
DESIGNATION
QTY
DESCRIPTION
10µF ±20%, 6.3V X5R ceramic
capacitor (0805)
TDK C2012X5R0J106M
Taiyo Yuden JMK212BJ106MG
0.1µF ±10%, 16V X7R ceramic
capacitors (0603)
Murata GRM188R71C104K
TDK C1608X7R1C104K
1µF ±10%, 10V X7R ceramic
capacitors (0603)
Murata GRM188R61A105K
TDK C1608X7R1A105K
2 x 10 right-angle receptacle
5-pin header
3-pin header
100Ω ±1% resistor (0603)
VIDIN, VIDOUT
—
—
2
2
1
DESIGNATION
R2
R3, R5
R4
R6
R7–R12
U1
C1P, VSS
COM1, COM2,
NO1, NO2
QTY
1
2
1
1
0
1
0
4
DESCRIPTION
226Ω ±1% resistor (0603)
75Ω ±1% resistors (0603)
0Ω resistor (0603)
15kΩ ±5% resistor (0603)
Not installed, resistors (0603)
MAX9507ATE+
(16-pin TQFN, 3mm x 3mm)
(Top Mark: AFH)
Not installed, test points
BNC 50Ω PCB vertical-mount
connectors
BNC 75Ω PCB vertical-mount
connectors
Shunts
PCB: MAX9507 Evaluation Kit+
C1
1
C2, C5
2
C3, C4
2
J1
JU1
JU2
R1
1
1
1
1
________________________________________________________________
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.
MAX9507 Evaluation Kit/Evaluation System
Evaluate: MAX9507
Component Suppliers
SUPPLIER
Taiyo Yuden
TDK Corp.
PHONE
WEBSITE
Murata Mfg. Co., Ltd. 770-436-1300 www.murata.com
408-573-4150 www.t-yuden.com
847-803-6100 www.component.tdk.com
6) Set the video signal generator for the desired video
input signal. This signal must contain sync information.
7) Verify that jumper JU1 on the CMAXQUSB+ board is
set to 2.5V or 3.3V. Verify both switches of SW1 are ON.
8) Connect the USB cable from the computer’s type-A
USB port to the CMAXQUSB+ board’s type-B USB
port.
9) Download the MAX9507 EV kit software from
www.maxim-ic.com/evkitsoftware and install it on
your computer by running the INSTALL.EXE pro-
gram. The program files are copied and icons are
created in the Windows
Start
menu.
10) Turn on the power supply and enable the video sig-
nal generator.
11) Start the MAX9507 program by opening its icon in
the
Start
menu.
12) Normal device operation is verified when
CMAXQUSB
HW: Connected. MAX9507 device connected
is dis-
played at the bottom-left side of the MAX9507 EV kit
window, as shown in Figure 1.
Note:
Indicate that you are using the MAX9507 when
contacting these component suppliers.
Recommended Equipment
•
•
•
•
1.7V to 2.625V, 500mA DC power supply (VDD)
Video signal generator
Video measurement equipment (e.g., Tektronix
VM-700T)
EV system
MAX9507 EV kit
Maxim CMAXQUSB+ board
USB cable (included with CMAXQUSB+)
A user-supplied Windows 98/2000/XP PC with a
spare USB port
•
Note:
In the following sections, software-related items
are identified by bolding. Text in
bold
refers to items
directly from the EV kit software. Text in
bold and
underlined
refers to items from the Windows
98/2000/XP operating system.
Detailed Description of Software
User-Interface Panel
In the program’s main window (Figure 1), a mouse is
used to toggle the checkboxes that control the various
features of the MAX9507. The MAX9507 EV kit software
permits the control of software-configurable features:
switches, sync-tip clamp, filter, signal path, charge
pump, load change flag enable, automatic signal path
enable, and automatic charge pump enable. Changes
to the controls result in write operations that update the
configuration and video load detect registers of the
MAX9507. All changes to the 8-bit command registers
are reflected on screen under the
B7–B0
labels; the
register contents are also read and displayed in hexa-
decimal format.
The EV kit software gives the user the option to automat-
ically read both registers, or manually read each regis-
ter individually by toggling the
Enable AutoPolling
checkbox. With AutoPolling disabled, the user must
manually click the
Read
button located next to the hex
register contents in order to send a read command. A
memo box at the bottom of the program’s main window
displays descriptions of the various features provided.
Place the pointer over the bit names for a functional
description. The status bar at the bottom of the pro-
gram’s main window is used to verify command module
and device connectivity.
Quick Start
The MAX9507 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) Carefully connect the boards by aligning the 20-pin
connector of the MAX9507 EV kit with the 20-pin
header on the CMAXQUSB+ interface board.
Gently press them together.
2) Connect the power-supply ground to the GND pad
on the EV kit.
3) Connect the 1.7V to 2.625V supply to the VDD pad
on the EV kit.
4) Connect the output of the video signal generator to
the VIDIN BNC connector on the EV kit. The video
signal must be biased such that the sync tip is at
ground and sets the full-scale video signal to
0.25V
P-P
.
5) Connect the VIDOUT BNC connector on the EV kit
to the input of the video measurement equipment.
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MAX9507 Evaluation Kit/Evaluation System
Evaluate: MAX9507
Figure 1. MAX9507 EV Kit Software Main Window
Switch Enables (SWEN2, SWEN1)
The dual single-pole/single-throw (SPST) analog switches
on the MAX9507 can be enabled individually by checking
the appropriate
SWEN_
checkbox. When checked, the
appropriate command is written to the configuration
register and the register contents are updated on the
display. Refer to the MAX9507 IC data sheet for more
details about the dual SPST analog switches.
Signal Path Enable (SPEN)
The MAX9507’s signal path is enabled by checking the
SPEN
checkbox. The signal path includes the video
amplifier, filter (if selected by
FLTEN),
input buffer, and
sync-tip clamp (if selected by
STEN). Note:
The
charge pump and regulator must be enabled for the
amplifier to function correctly. When
SPEN
is checked,
the appropriate command is written to the configuration
register and the register contents are updated on the
display. This bit overrides the
ASPEN
setting. Refer to
the MAX9507 IC data sheet for more details about the
signal path.
Sync-Tip Clamp Enable (STEN)
The MAX9507’s sync-tip clamp is enabled by checking
the
STEN
checkbox. When
STEN
is checked, the
appropriate command is written to the configuration
register and the register contents are updated on the
display. When
STEN
is cleared, the part expects a DC-
coupled input. Refer to the MAX9507 IC data sheet for
more details about the sync-tip clamp.
Charge Pump Enable (CPEN)
The MAX9507’s charge pump is enabled by checking
the
CPEN
checkbox. The charge pump and regulator
must be enabled for the amplifier to function correctly.
When
CPEN
is checked, the appropriate command is
written to the configuration register and the register
contents are updated on the display. This bit overrides
the
ACPEN
setting. Refer to the MAX9507 IC data
sheet for more details about the charge pump.
Filter Enable (FLTEN)
The MAX9507’s video filter is enabled by checking the
FLTEN
checkbox. When
FLTEN
is checked, the appro-
priate command is written to the configuration register
and the register contents are updated on the display.
Refer to the MAX9507 IC data sheet for more details
about the video filter.
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3
MAX9507 Evaluation Kit/Evaluation System
Evaluate: MAX9507
Load (Read Only)
The MAX9507’s load bit is a read-only bit that displays
the load status if load detection is enabled. When this bit
reads 1, a load is detected. To enable automatic load
detection, set
ASPEN
or
ACPEN
to 1. For more informa-
tion about the load bit, refer to the
Video Load Detection
Circuitry
section of the MAX9507 IC data sheet.
Automatic Charge Pump Enable (ACPEN)
The MAX9507’s automatic charge pump control is
enabled by checking the
ACPEN
checkbox. This bit
enables the load detect circuitry and automatic control
of the charge pump based on load status. When
ACPEN
is checked, the appropriate command is written
to the video load detect register and the register con-
tents are updated on the display. Refer to the MAX9507
IC data sheet for more details about automatic charge
pump enable.
Load Change Flag Enable (LCFEN)
The MAX9507’s load change flag is enabled by check-
ing the
LCFEN
checkbox. When
LCFEN
is checked,
the appropriate command is written to the video load
detect register and the register contents are updated
on the display. This bit does not affect the
LOAD
I
2
C
bit. Refer to the MAX9507 IC data sheet for more
details about the load change flag.
Simple I
2
C/SMBus Commands
There are two methods for communicating with the
MAX9507: through the normal user-interface panel
(Figure 1) or through the SMBus commands available
by selecting the
Interface Diagnostic Window
item
from the
Action
pulldown menu. The
Maxim Command
Module Interface
window pops up and includes a
2-wire interface
tab that allows for execution of the
SMBusSendByte()
and
SMBusQuick()
commands.
The SMBus dialog boxes accept numeric data in binary,
decimal, or hexadecimal. Hexadecimal numbers
should be prefixed by $ or 0x. Binary numbers must be
exactly eight digits. See Figure 2 for an illustration of
this tool.
Automatic Signal Path Enable (ASPEN)
The MAX9507’s automatic signal path control is enabled
by checking the
ASPEN
checkbox. This bit enables the
load detect circuitry and automatic control of the signal
path based on load status. When
ASPEN
is checked,
the appropriate command is written to the video load
detect register and the register contents are updated on
the display. Refer to the MAX9507 IC data sheet for
more details about automatic signal path enable.
Figure 2. MAX9507 EV Kit Software Interface Diagnostic Window
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MAX9507 Evaluation Kit/Evaluation System
Detailed Description of Hardware
The MAX9507 EV system (MAX9507EVCMAXQU+) con-
sists of the MAX9507 EV kit (MAX9507EVKIT+) and the
Maxim CMAXQUSB+ command module. The EV kit eval-
uates the MAX9507 DirectDrive video filter amplifier and
the CMAXQUSB+ provides the I
2
C/SMBus-compatible
interface for software control of the MAX9507’s video fil-
ter, analog switches, load detection, and other functions.
The EV kit is powered by a 1.7V to 2.625V power sup-
ply and is driven by a video source. The EV kit can
accept either a 250mV
P-P
or 1V
P-P
input full-scale
video signal and allows the use of both AC-coupled
and DC-coupled input signals. The output of the EV kit
is DC-coupled and provides an output full-scale video
signal that is nominally 2V
P-P
.
The MAX9507 amplifies standard-definition video signals
and sets the video black level near ground while con-
suming minimal power. The video output amplifier can
detect whether a load is present and indicates a change
in load status through the load change flag bit (LCF). In
addition, the MAX9507 has dual SPST analog switches
for routing additional audio, digital, or video signals.
I
2
C Pullup Resistors
The MAX9507 EV kit assumes pullup resistors will be
provided by the I
2
C master (e.g., the CMAXQUSB
board) on the SDA and SCL lines. To add these resis-
tors on the EV kit board instead, solder resistors to the
R11 and R12 locations.
Evaluate: MAX9507
Video Input Selection
The MAX9507 EV kit can be configured to accept either
a 250mV
P-P
or 1V
P-P
input full-scale signal at VIDIN
through the shunt location of JU2 (Table 2). When the
shunt is placed between pin 1 and pin 2, VIDIN sees a
standard termination of (R2 + R3) // (R1) = 75Ω to GND
and there is no attenuation. When the shunt is placed
between pin 2 and pin 3, VIDIN again sees a standard
termination of (R2 + R3) // (R1) = 75Ω, but the signal is
attenuated by R3 / (R2 + R3) = 1/4. Therefore, a 1V
P-P
signal at VIDIN results in 250mV
P-P
at IN.
Table 2. Jumper JU2 Functions
SHUNT POSITION
1-2*
2-3
INPUT SIGNAL
250mV
P-P
signal
1V
P-P
signal
I
2
C Slave Address Selection
The MAX9507 is programmable to one of four I
2
C slave
addresses through jumper JU1 (Table 1). The address
is defined as the 7 most significant bits (MSBs) fol-
lowed by the read/write bit.
*Default
position.
Dual SPST Analog Switches
Additional audio, digital, video, or other signals can be
routed using the MAX9507’s SPST analog switches. The
MAX9507 EV kit provides external connections to these
switches through 50Ω BNC connectors. Termination
resistors for the switches may be placed on the EV kit
board by soldering resistors in the R7–R10 locations.
Table 1. Jumper JU1 Functions
SHUNT
POSITION
1-3*
1-4
1-5
1-2
DEV_ADD PIN
Connected to GND
Connected to VDD
Connected to SCL
Connected to SDA
WRITE
ADDRESS
0x98
0x9A
0x9C
0x9E
READ
ADDRESS
0x99
0x9B
0x9D
0x9F
*Default
position.
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