_______________________________________________________________ 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.
MAX9611 Evaluation Kit
Evaluates: MAX9611/MAX9612
19-5619; Rev 0; 11/10
General Description
The MAX9611 evaluation kit (EV kit) is an assembled
and tested PCB used to evaluate the MAX9611 high-side
current-sense amplifier with an integrated 12-bit ADC
and a gain block that can be configured either as an op
amp or as a comparator. The on-board microcontroller,
which is connected to the PC through the universal serial
bus (USB) port, acts as the I²C master.
The EV kit also includes Windows XPM-, Windows
VistaM-, and WindowsM 7-compatible software, which
provides a simple user interface for exercising the
device’s features. The program is menu driven and offers
a graphical user interface (GUI) complete with control
buttons and status displays.
The EV kit comes with the MAX9611AUB+ installed
(noninverting configuration). Contact the factory for free
samples of the pin-compatible MAX9612AUB+ (inverting
configuration).
Features
S 60V Current Sense with Integrated ADC
S Windows XP-, Windows Vista-, and Windows
7-Compatible Software
S On-Board Microcontroller to Generate I²C
Commands
S Easy-to-Use, Menu-Driven Software
S USB-PC Connection (Cable Included)
Ordering Information
+Denotes lead(Pb)-free and RoHS compliant.
Component List
Windows, Windows XP, and Windows Vista are registered trademarks of Microsoft Corp.
PART TYPE
MAX9611EVKIT+ EV Kit
DESIGNATION QTY DESCRIPTION
C1, C12, C14,
C20 4
10FF Q10%, 16V X5R ceramic
capacitors (0805)
Murata GRM21BR61C106K
C2, C3 2
22pF Q5%, 50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H220J
C4 1
0.033FF Q10%, 25V X7R ceramic
capacitor (0603)
TDK C1608X7R1E333K
C5–C10, C17,
C18, C23 9
0.1FF Q10%, 16V X7R ceramic
capacitors (0603)
TDK C1608X7R1C104K
C11, C13,
C21, C22,
C24, C25,
C29, C30
8
1FF Q10%, 16V X5R ceramic
capacitors (0603)
TDK C1608X5R1C105K
C15, C16 2
10pF Q5%, 50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H100J
C19, C28 0 Not installed, ceramic capacitors
(0805)
DESIGNATION QTY DESCRIPTION
C26 1
1FF Q10%, 100V X7R ceramic
capacitor (1206)
Murata GRM31CR72A105KA01L
C27 1
10000pF Q10%, 100V X7R
ceramic capacitor (0603)
TDK C1608X7R2A103K
H1 0 Not installed, 10-pin (2 x 5)
header
JU1, JU2, JU3 3 3-pin headers
JU4, JU5 2 5-pin headers
L1 1 Ferrite bead (0603)
TDK MMZ1608R301A
M1 1
1.49A, 30V p-channel MOSFET
(3 SOT23)
Vishay Si2303BDS-T1-E3
P1 1 USB type-B right-angle PC-mount
receptacle
OUT, RS+,
RS-, SET 4 Test points, red
R1, R2 2 27I Q5% resistors (0603)
R3, R14, R15 3 1.5kI Q5% resistors (0603)
MAX9611 Evaluation Kit
Evaluates: MAX9611/MAX9612
2 ______________________________________________________________________________________
Note: Indicate that you are using the MAX9611 when contacting these component suppliers.
Component Suppliers
MAX9611 EV Kit Files
*EP = Exposed pad.
Component List (continued)
µMAX is a registered trademark of Maxim Integrated Products, Inc.
SUPPLIER PHONE WEBSITE
Hong Kong X’tals Ltd. 852-35112388 www.hongkongcrystal.com
Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com
TDK Corp. 847-803-6100 www.component.tdk.com
Vishay 402-563-6866 www.vishay.com
FILE DESCRIPTION
INSTALL.EXE Installs the EV kit files on your computer
MAX9611.EXE Application program
CDM20600.EXE Installs the USB device driver
UNINSTALL.EXE Uninstalls the EV kit software
USB_Driver_Help_200.PDF USB driver installation help file
DESIGNATION QTY DESCRIPTION
R4 1 470I Q5% resistor (0603)
R5 1 2.2kI Q5% resistor (0603)
R6 1 10kI Q5% resistor (0603)
R7 1 169kI Q1% resistor (0603)
R8 1 100kI Q1% resistor (0603)
R9–R13 0 Not installed, resistors—shorted
with PCB trace (0603)
R16, R23 2 20kI Q1% resistors (0603)
R17 1 402I Q1% resistor (0603)
R18 1 4.02kI Q1% resistor (0603)
R19, R20, R21 3 1MI Q5% resistors (0603)
R22 1 1.65kW Q1% resistor (0603)
R24 0 Not installed, resistor (0603)
R25 1 8.06kI Q1% resistor (0603)
R26 1 6.65kI Q1% resistor (0603)
R27 1
0.1I Q1% current-sense resistor
(1206)
Vishay WSL1206R1000FEA
U1 1
Current-sense amplifier, 12-bit
ADC (10 FMAXM)
Maxim MAX9611AUB+
U2 1 Microcontroller (68 QFN-EP*)
Maxim MAXQ2000-RAX+
DESIGNATION QTY DESCRIPTION
U3 1 2.5V LDO regulator (5 SC70)
Maxim MAX8511EXK25+
U4 1
Adjustable-output LDO regulator
(5 SC70)
Maxim MAX8512EXK+
U5 1 1.8V LDO regulator (5 SC70)
Maxim MAX8511EXK18+
U6 1 Level translator (10 FMAX)
Maxim MAX1840EUB+
U7 1 UART-to-USB converter (32 TQFP)
U8 1 93C46 type 3-wire EEPROM (8 SO)
Y1 1
16MHz crystal (HCM49)
Hong Kong X’tals
SSM16000N1HK188F0-0
Y2 1
6MHz crystal (HCM49)
Hong Kong X’tals
SSL60000N1HK188F0-0
— 1 USB high-speed A-to-B cables, 6ft
— 5 Shunts
— 1 PCB: MAX9611 EVALUATION KIT+
MAX9611 Evaluation Kit
Evaluates: MAX9611/MAX9612
_______________________________________________________________________________________ 3
*Default position.
Quick Start
Required Equipment
• MAX9611 EV kit (USB cable included)
• Windows XP, Windows Vista, or Windows 7 PC with
a spare USB port
• 12V, 1.5A DC power supply
• Electronic load capable of sinking 1A (e.g., HP6060B)
• Three digital voltmeters (DVMs)
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 under-
lined refers to items from the Windows operating system.
Procedure
The EV kit is fully assembled and tested. Follow
the steps below to verify board operation.
Caution: Do not turn on power supplies until all con-
nections are completed.
1) Visit www.maxim-ic.com/evkitsoftware to down-
load the latest version of the EV kit software,
9611Rxx.ZIP. Save the EV kit software to a tempo-
rary folder and uncompress the ZIP file.
2) Install the EV kit software on your computer by
running the INSTALL.EXE program inside the tem-
porary folder. The program files are copied to your
PC and icons are created in the Windows Start |
Programs menu. During software installation, some
versions of Windows may show a warning message
indicating that this software is from an unknown
publisher. This is not an error condition and it is safe
to proceed with installation. Administrator privileges
are required to install the USB device driver on
Windows.
3) Verify that all jumpers (JU1–JU5) are in their default
positions, as shown in Tables 1 and 2.
4) Set the DC power supply to 12V and connect to
the VIN and the GND pads of the MAX9611 EV kit
board.
5) Set the electronic load to sink 750mA. Connect the
electronic load positive terminal to the LOAD pad
and the negative terminal to the nearest GND pad.
6) Connect the first voltmeter between the RS+ and
RS- test points.
7) Connect the second voltmeter between the SET test
point and the nearest GND pad.
8) Connect the third voltmeter between the OUT test
point and the nearest GND pad.
9) Connect the USB cable from the PC to the EV kit
board. A Windows message appears when con-
necting the EV kit board to the PC for the first time.
Each version of Windows has a slightly different
message. If you see a Windows message stating
ready to use, then proceed to the next step; oth-
erwise, open the USB_Driver_Help_200.PDF docu-
ment in the Windows Start | Programs menu to
verify that the USB driver was installed successfully.
10) Turn on the power supply.
11) Start the EV kit software by opening its icon in the
Start | Programs menu. The EV kit software main
window appears, as shown in Figure 1. Observe as
the program automatically detects the address of
the device and starts the main program.
12) Verify that the Value within the ADC group box is
accurate by monitoring the measurement on the
voltmeters.
Detailed Description of Software
The user interface (Figure 1) is easy to operate; use the
mouse or press the Tab key to navigate with the arrow
keys. Each of the buttons correspond to bits in the
command and configuration bytes. By pressing these
buttons, the correct I²C-compatible write operation is
Table 1. Jumper Description (JU1, JU2, JU3)
JUMPER SHUNT POSITION DESCRIPTION
JU1 1-2* Connects the device to the on-board +3.3V DC supply.
2-3 Connects the device to the user-supplied +2.7V to +5.5V supply.
JU2 1-2* Connects the device to the on-board SDA.
2-3 Connects the device to the user-supplied SDA.
JU3 1-2* Connects the device to the on-board SCL.
2-3 Connects the device to the user-supplied SCL.
Evaluates: MAX9611/MAX9612
4 ______________________________________________________________________________________
MAX9611 Evaluation Kit
generated to update the internal registers of the device.
The Interface group box indicates the current I²C-
compatible Device Address, Register Address Sent,
and the Data Sent/Received for the last read/write
operation. This data is used to confirm proper device
operation.
Control Register
The device can be used in two different configurations,
op-amp mode or comparator mode. Using the part in
op-amp mode operates the transistor (M1) in its linear
region, thus limiting the current source into the LOAD
pad. Using the part in comparator mode operates M1 as
a switch, thus disconnecting the load from the VIN pad in
the event of an over-limit condition.
The MUX drop-down list is used to read the current-
sense amplifier output from the ADC (1x, 4x, 8x),
common-mode voltage, OUT voltage, SET voltage, and
die temperature. The MODE drop-down list allows the
user to choose different modes within the op-amp and
comparator configuration. If OUT Latch with Delay
and Auto-Retry is selected, then a Delay Time and
Retry Time group box appears in the main window. The
Delay Time group box has 1ms and 100us radio button
options. The Retry Time group box has 50ms and 10ms
radio button options. See the MAX9611 IC data sheet for
a detailed description. Check the SHDN checkbox to
have the part enter shutdown mode.
ADC
Select the desired ADC reading from the MUX drop-
down list.
Current-Sense Input Voltage
CSA is the current-sense amplifier input voltage. The
MUX drop-down list allows the user to select gains of
1x, 4x, or 8x, which correspond to full-scale voltages
of 440mV, 110mV, and 55mV, and LSBs of 107.5FV,
26.88FV, and 13.44FV, respectively. The RS+ and RS-
test points of the EV kit can be used to verify the data.
Common-Mode Voltage
Common-mode voltage is the average of the voltage at
RS+ and RS- that is displayed under VCM. The common-
mode voltage range is from 0 to 57.3V and the LSB is
14mV. Select 011- Channel B: Common Mode Voltage
from ADC from the MUX drop-down list for this reading.
OUT Voltage
The internal op-amp or comparator output voltage can
be monitored over the 0 to 57.3V range by the ADC and
the LSB is 14mV. Select 100- Channel C: OUT Voltage
from ADC from the MUX drop-down list for this reading.
The OUT voltage can be verified through the OUT test
point on the EV kit.
SET Voltage
The SET voltage (SET test point) is determined through
resistor-divider R22 and R23. The SET voltage range is
from 0 to 1.10V and has an LSB of 268FV. Select 101-
Channel D: SET Voltage from ADC from the MUX drop-
down list for this reading.
Temperature
The die temperature can be read by the ADC by select-
ing 110- Channel E: Temperature from ADC from the
MUX drop-down list. The temperature range is from
-40NC to +127NC and has an LSB of +0.48NC.
Data Logging
All ADC data is saved to a .csv file when the Data
Logging checkbox is checked.
Advanced User Interface
There are two methods for communicating with the
device. The first is through the window shown in
Figure 1. The second is through the Advanced User
Interface window shown in Figure 2. The Advanced
User Interface window becomes available by selecting
the Options | Interface (Advanced User) menu item
and allows execution of serial commands manually.
An Advanced User Interface window can be used as
a debug tool because it is capable of manually reading
and writing to every register of the device.
Detailed Description of Hardware
The MAX9611 EV kit is an assembled and tested PCB
used to evaluate the MAX9611 high-side current-sense
amplifier with an integrated 12-bit ADC and a gain block
that can be configured either as an op amp or as a
comparator.
MAX9611 Evaluation Kit
Evaluates: MAX9611/MAX9612
_______________________________________________________________________________________ 5
Figure 1. MAX9611 EV Kit Software Main Window
MAX9611 Evaluation Kit
Evaluates: MAX9611/MAX9612
6 ______________________________________________________________________________________
Address Selection
The device’s slave I²C address is configured through the
A1 and A0 pins. The EV kit features jumpers JU4 and
JU5 to configure these pins. The default address is 1111
111 (R/W). See Table 2 for a complete list of addresses.
Verify that the new I²C address matches the address
shown in the software’s Device Address combo box.
User-Supplied Power Supply
The EV kit is powered completely from the USB port by
default. Move the shunt on jumper JU1 to the 2-3 posi-
tion and apply a 2.7V to 5.5V power supply between the
VCC1 and GND pads.
User-Supplied I2C
To use the device with a user-supplied I²C interface,
first move the shunts on jumpers JU2 and JU3 to the 2-3
position. Next apply a user-supplied 2.7V to 5.5V power
supply at the VCC1 and GND pads. Lastly, connect SCL
and SDA to the corresponding pads on the EV kit.
Evaluating the MAX9612
When installing the MAX9612 into U1 of the EV kit, the
following steps must be completed. Remove resistor R24
and populate R25 with the appropriate pullup resistor.
The EV kit can only use the MAX9612 as a comparator
and not as an op amp because of an absence of an
n-channel MOSFET on board. For proper operation, sup-
ply the source voltage between the VIN_ALT and GND
pads instead of between VIN and GND pads.
Figure 2. Example of an SMBusWriteByte Operation Using the Advanced User Interface
MAX9611 Evaluation Kit
Evaluates: MAX9611/MAX9612
_______________________________________________________________________________________ 7
*Default position.
Table 2. Shunt Setting for SMBus/I²C Address
SHUNT POSITION
B7 B6 B5 B4 B3 B2 B1 B0
WRITE
ADDRESS
(hex)
READ
ADDRESS
(hex)
JU4
(A1)
JU5
(A0)
1-5 1-5 1 1 1 0 0 0 0 R/W0xE0 0xE1
1-5 1-4 1 1 1 0 0 0 1 R/W0xE2 0xE3
1-5 1-3 1 1 1 0 0 1 0 R/W0xE4 0xE5
1-5 1-2 1 1 1 0 0 1 1 R/W0xE6 0xE7
1-4 1-5 1 1 1 0 1 0 0 R/W0xE8 0xE9
1-4 1-4 1 1 1 0 1 0 1 R/W0xEA 0xEB
1-4 1-3 1 1 1 0 1 1 0 R/W0xEC 0xED
1-4 1-2 1 1 1 0 1 1 1 R/W0xEE 0xEF
1-3 1-5 1 1 1 1 0 0 0 R/W0xF0 0xF1
1-3 1-4 1 1 1 1 0 0 1 R/W0xF2 0xF3
1-3 1-3 1 1 1 1 0 1 0 R/W0xF4 0xF5
1-3 1-2 1 1 1 1 0 1 1 R/W0xF6 0xF7
1-2 1-5 1 1 1 1 1 0 0 R/W0xF8 0xF9
1-2 1-4 1 1 1 1 1 0 1 R/W0xFA 0xFB
1-2 1-3 1 1 1 1 1 1 0 R/W0xFC 0xFD
1-2* 1-2* 1 1 1 1 1 1 1 R/W0xFE 0xFF
MAX9611 Evaluation Kit
Evaluates: MAX9611/MAX9612
8 ______________________________________________________________________________________
Figure 3a. MAX9611 EV Kit Schematic (Sheet 1 of 2)
MAX9611 Evaluation Kit
Evaluates: MAX9611/MAX9612
_______________________________________________________________________________________ 9
Figure 3b. MAX9611 EV Kit Schematic (Sheet 2 of 2)
MAX9611 Evaluation Kit
Evaluates: MAX9611/MAX9612
10 _____________________________________________________________________________________
Figure 4. MAX9611 EV Kit Component Placement Guide—
Component Side
Figure 5. MAX9611 EV Kit PCB Layout—Component Side
Figure 6. MAX9611 EV Kit PCB Layout—Inner Layer 2
1.0”
1.0”
1.0”
MAX9611 Evaluation Kit
Evaluates: MAX9611/MAX9612
______________________________________________________________________________________ 11
Figure 7. MAX9611 EV Kit PCB Layout—Inner Layer 3 Figure 8. MAX9611 EV Kit PCB Layout—Solder Side
1.0” 1.0”
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.
12 Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
MAX9611 Evaluation Kit
Evaluates: MAX9611/MAX9612
Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 11/10 Initial release —
