General Description
The MAX11040K evaluation kit (EV kit) is a fully assem-
bled and tested PCB that evaluates the IC’s 4-channel,
simultaneous-sampling ADC. The EV kit also includes
Windows®2000-, Windows XP®-, and Windows Vista®-
compatible software that provides a simple graphical
user interface (GUI) for exercising the IC’s features.
The EV kit comes with two MAX11040KGUU+s installed
on the motherboard. Up to three more parts can be
connected to the EV kit to increase the number of input
channels by cascading up to three daughterboards to
the EV kit (order separately).
Features
♦Eight Simultaneous ADC Channel Inputs
(EV Kit Only)
♦Up to 20* Simultaneous ADC Channel Inputs with
the EV Kit and the Daughterboards
♦Four Banana Jacks for Power-Supply Inputs
♦BNC Connectors on Channel 0 and Channel 1 for
the EV Kit and Daughterboard for the Signal
Inputs
♦Autofrequency, RMS, Min, Max, and Average DC
Calculations in the EV Kit Software
♦USB-PC Connection
♦Proven PCB Layout
♦Windows 2000-, Windows XP-, and Windows Vista
(32-Bit)-Compatible Evaluation Software
♦Fully Assembled and Tested
Evaluate: MAX11040K
MAX11040K Evaluation Kit/Daughterboard
________________________________________________________________
Maxim Integrated Products
1
19-6133; Rev 0; 11/11
Component Lists
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.
MAX11040K EV Kit
*The EV kit design limits 20 ADC channel inputs; however, the
IC supports up to 32 ADC channel inputs when designed in a
system using eight ICs.
DESIGNATION QTY DESCRIPTION
AIN0-, AIN0+,
AIN1-, AIN1+ 4
75, 4-pin BNC female jack
receptacles, 0.250in spacing
(top mount)
AVDD, AGND,
DVDD, DGND 4 Uninsulated banana jacks
C1, C2, C4, C5, C10,
C11, C13, C14, C22,
C23, C25, C26, C30,
C31, C33, C34,
C46, C47
18
10pF ±5%, 50V C0G ceramic
capacitors (0603)
TDK C1608C0G1H100J
C3, C6, C7, C8, C12,
C15, C16, C18, C20,
C24, C27, C28, C32,
C35, C36, C37, C40
17
1μF ±10%, 10V X7R ceramic
capacitors (0603)
TDK C1608X7R1A105K
C9, C17, C19, C21,
C29, C38, C48, C59,
C64–C78, C80–C99,
C101–C104
47
0.01μF ±10%, 50V C0G
ceramic capacitors (0603)
TDK C1608C0G1E103K
DESIGNATION QTY DESCRIPTION
C39, C50–C55, C60,
C62, C63 10
0.1μF ±10%, 16V X7R ceramic
capacitors (0603)
TDK C1608X7R1C104K
C41 1
22μF ±10%, 6.3V X5R ceramic
capacitor (0805)
TDK C2012X5R0J226K
C42 1
4.7μF ±10%, 6.3V X5R
ceramic capacitor (0603)
TDK C1608X5R0J475M
C43, C44, C45, C57,
C58, C61, C107,
C108, C111–C126
0Not installed, ceramic
capacitors (0603)
C49 1
10μF ±10%, 4V X5R ceramic
capacitor (0603)
TDK C1608X5R0G106K
C79 1
22μF ±20%, 6.3V X7R ceramic
capacitor (1206)
TDK C3216X7R0J226M
Ordering Information appears at end of data sheet.
Windows, Windows XP, and Windows Vista are registered
trademarks of Microsoft Corp.
Evaluate: MAX11040K
MAX11040K Evaluation Kit/Daughterboard
2 _______________________________________________________________________________________
Component Lists (continued)
DESIGNATION QTY DESCRIPTION
R56 1 100k ±5% resistor (0603)
RN1–RN5 5
33, 8-pin/4-resistor SMT resistor
networks
Panasonic EXB-28V330JX
RN6 1
10k, 16-pin/8-resistor SMT
resistor network
Panasonic EXB-2HV103JV
RN7–RN11 5
33, 16-pin/8-resistor SMT
resistor networks
Panasonic EXB-2HV330JV
RN12 1
2.2k, 16-pin/8-resistor SMT
resistor network
Panasonic EXB-2HV222JV
RN13 1
1k, 8-pin/4-resistor SMT resistor
network
Panasonic EXB-28V102JX
S1 1
4-position, SMT half-pitch DIP
switch
S2 1 Pushbutton switch
U1, U2 2 4-channel ADC (38 TSSOP)
Maxim MAX11040KGUU+
U3 1 D-flip flop
U7 1
LDO regulator (8 TDFN)
Maxim MAX1976AETA160+
U8 1 Controller
U9 1 256kword flash memory (48 TSOP)
U10 1
64Mb SDRAM (54 TSOP)
Micron Technology
MT48LC4M16A2P-75
U12, U13 2 2-input positive-OR gates (SOT32)
U14 0 Not installed (8 SO)
Y1 1 24.576MHz crystal, 18pF load
Y2 1 12MHz SMT crystal (6mm)
Y3 1
32.768kHz watch crystal, 12.5pF
cylindrical
Y4 0 Not installed, 24.576MHz crystal
— 9 Shunts
— 1
USB high-speed A-to-B cables,
5ft (1.5m)
— 1 PCB: MAX11040K EVALUATION KIT
MAX11040K EV Kit
DESIGNATION QTY DESCRIPTION
C100 1
10μF ±10%, 6.3V X5R ceramic
capacitor (1206)
TDK C3216X5R0J106K
C105, C106 2
18pF ±5%, 50V C0G ceramic
capacitors (0603)
TDK C1608C0G1H180J
D1, D3 2 Yellow LEDs (0603)
D2, D4 2 Red LEDs (0603)
D9 1
6.2V, 500mW zener MELF
diode
Diodes, Inc. ZMM5234B-7
J1 1
USB type-B right-angle PC-
mount receptacle
J2 1 Dual-row, 14-pin header (2 x 7)
J3–J10 8
4-position terminal blocks
ED100/4DS
J12 1
Dual-row, right-angle male
header (2 x 7)
J13, J14 2 Dual-row, 20-pin headers
(2 x 10)
JU1, JU2, JU6,
JU15–JU19 8 2-pin headers
JU3, JU20 2 3-pin headers
L1, L2 2 30 SMT ferrite beads (0603)
L3–L6 4
220 SMT ferrite beads (0805)
Murata BLM21PG221SN1D
R1, R2, R4–R8, R28,
R30, R49 0 Not installed, resistors (0603)
R3, R10, R11, R12 4 330 ±5% resistors (0603)
R9 1 0 ±5% resistor (0603)
R26, R27, R36, R37,
R38 5 10k ±5% resistors (0603)
R29, R31, R32, R33,
R50, R51 6 33 ±5% resistors (0603)
R34 1 10 ±5% resistor (0603)
R41, R42 2 27 ±5% resistors (0603)
R43, R54, R55 3 1.5k ±1% resistors (0603)
R44 1 300k ±5% resistor (0603)
R45 1 680k ±5% resistor (0603)
R46, R47, R48 3 1M ±1% resistors (0603)
R53 1 2.2k ±5% resistor (0603)
Evaluate: MAX11040K
MAX11040K Evaluation Kit/Daughterboard
_______________________________________________________________________________________ 3
Component Lists (continued)
MAX11040K Daughterboard
DESIGNATION QTY DESCRIPTION
AIN0-, AIN0+,
AIN1-, AIN1+ 4
75, 4-pin BNC female jack
receptacles, 0.250in spacing
(top mount)
AVDD, AGND,
DVDD, DGND 4 Uninsulated banana jacks
C1, C2, C4, C5, C10,
C11, C13, C14 8
10pF ±5%, 50V C0G ceramic
capacitors (0603)
TDK C1608C0G1H100J
C3, C6, C7, C8, C12,
C15, C16, C18 8
1μF ±10%, 10V X7R ceramic
capacitors (0603)
TDK C1608X7R1A105K
C9, C17, C19 3
0.01μF ±10%, 25V X7R
ceramic capacitors (0603)
Murata GRM188R71E103K
C20, C21 2
18pF ±5%, 50V C0G ceramic
capacitors (0603)
TDK C1608C0G1H180J
C22–C29 0
Not installed, capacitors
(0603)
D1, D3 2 Yellow LEDs (0603)
D2, D4 2 Red LEDs (0603)
J1 1
Dual-row, 14-pin right-angle
female connector (2 x 7)
J2 1
Dual-row, 14-pin right-angle
male connector (2 x 7)
DESIGNATION QTY DESCRIPTION
J3 1
Dual-row, 20-pin header
(2 x 10)
J4–J7 4 4-position terminal blocks
JU1, JU2, JU5,
JU6, JU7 5 2-pin headers
JU3, JU4, JU11 3 3-pin headers
R1–R4 4
330 ±5% resistors (0603)
(use lead-free parts only)
R5 1
2.2k ±5% resistor (0603)
(use lead-free parts only)
R6, R8 0 Not installed, resistors (0603)
R7 1
0 ±5% resistor (0603)
(use lead-free parts only)
S1 1 Pushbutton switch
U1 1
4-channel ADC (38 TSSOP)
Maxim MAX11040KGUU+
U2 1 D-flip flop
Y1 1 24.576MHz crystal, 18pF load
— 8 Shunts (JU1–JU5)
— 1
PCB: MAX11040KDB
EVALUATION KIT
SUPPLIER PHONE WEBSITE
Diodes Incorporated 805-446-4800 www.diodes.com
Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com
Panasonic Corp. 800-344-2112 www.panasonic.com
TDK Corp. 847-803-6100 www.component.tdk.com
Component Suppliers
Note: Indicate that you are using the MAX11040K when contacting these component suppliers.
FILE DESCRIPTION
INSTALL.EXE Instal l s the E V ki t fi l es on your com p uter
MAX11040K.EXE Application program
LIBUSB.INF USB device driver file
UNINST.INI Uninstalls the EV kit software
MAX11040K EV Kit Files
Evaluate: MAX11040K
MAX11040K Evaluation Kit/Daughterboard
4 _______________________________________________________________________________________
Quick Start
Recommended Equipment
•MAX11040K EV kit (USB cable included)
•+3.3V analog supply voltage
•+3.3V digital supply voltage
•Signal source from -2.2V to +2.2V
•User-supplied Windows 2000/XP or Windows Vista
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 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 connections are
completed.
1) Visit www.maxim-ic.com/evkitsoftware to down-
load the latest version of the EV kit software,
11040KRxx.ZIP. Save the EV kit software to a tem-
porary folder and uncompress the ZIP file.
2) Make sure that the shunts of all jumpers are in the
default positions, as shown in Table 1.
3) Connect the analog voltage supply to the AVDD
and AGND connectors.
4) Connect the digital voltage supply to the DVDD and
DGND connectors.
5) Turn on the power supply.
6) Connect the negative terminal or ground terminal of
the signal source to the negative input (‘-’) on J3
(AIN0 on U1), and the positive terminal of the signal
source to the positive input (‘+’) on J3.
7) Set the signal source to generate a 60Hz, 2V peak-
to-peak sinusoidal wave.
8) Install the MAX11040K evaluation software on your
computer by running the INSTALL.EXE program
inside the temporary folder. The program files are
copied and icons are created for them in the
Windows Start | Programs menu.
9) Connect the USB cable from the PC to the EV kit. A
Building Driver Database window pops up in addi-
tion to a New Hardware Found message when
installing the USB driver for the first time. If a win-
dow that is similar to the one described above is not
seen after 30s, remove the USB cable from the EV
kit and reconnect it. Administrator privileges are
required to install the USB device driver on
Windows.
10) Follow the directions of the Add New Hardware
Wizard to install the USB device driver. Choose the
Search for the best driver for your device option.
Specify the location of the device driver to be
C:\Program Files\MAX11040K using the Browse
button. During device driver installation, Windows
may show a warning message indicating that the
device driver Maxim uses does not contain a digital
signature. This is not an error condition and it is
safe to proceed with installation. Refer to the
USB_Driver_Help.PDF document included with the
software for additional information.
11) Start the EV kit software by opening its icon in the
Start | Programs menu.
12) Wait until the program automatically detects the
MAX11040K hardware and displays the user-inter-
face panel (Figure 1).
13) Press the Start Conversion button in the Data
Logging group box.
14) Press the Calculate button and verify that the
Frequency of 60Hz, the MIN value of -1V, and the
MAX value of 1V are displayed in the Calculation
group box.
Evaluate: MAX11040K
JUMPER SHUNT
POSITION DESCRIPTION WHEN TO USE THIS OPTION
1-2* Connects the on-board crystal (Y1) to the
crystal oscillator input and output of IC #1 (U1)
When the user wishes to stimulate IC #1
modulator clock by the on-board crystal (Y1)
JU1
Open Disconnects the on-board crystal from the IC
(U1)
When the user wishes to stimulate IC #1
modulator clock by an external frequency
1-2 Connects the XOUT pin of the IC (U1) to the
EX_XOUT pad
When the user-supplied external crystal
connects to the IC (U1) through the EX_XIN and
the EX_XOUT pads (see also JU6)
JU2
Open* Disconnects the EX_XOUT pad from the XOUT
pin of the IC (U1)
When the user wishes to stimulate the IC (U1)
modulator clock by the Y1 crystal
1-2
Connects the DRDYOUT pin of the IC (U2) to the
CO_DRDYOUT pin on the cascading connector
(J12)
Use this option when the IC daughterboard is
connected to the IC EV kit
JU3
2-3* Connects the DRDYOUT pin of the IC (U2) to the
interrupt pin (INT0) of the on-board controller
When there is no daughterboard connected to
the board
1-2
Connects the XIN pin of the IC (U1) to the
EX_XIN pad
Note: User-supplied external crystal may be
connected to the IC (U1) through the EX_XIN
and the EX_XOUT pads
When the user wishes to stimulate the IC (U1)
modulator clock by an external clock or crystal,
not the Y1 crystal (see also JU2)
JU6
Open* Disconnects the EX_XIN pad from the XIN pin of
the IC (U1)
When the user wishes to stimulate the IC (U1)
modulator clock by the Y1 crystal
1-2 Connects the AIN0- pin of the IC (U1) to AGND for
single-ended input-signal measurement
When the user wishes to make a single-ended
signal measurement on AIN0+/AIN0-
JU15
Open* Disconnects the AIN0- pin of the IC (U1) from
AGND
When the user wishes to make a differential
signal measurement on AIN0+/AIN0-
1-2 Connects the AIN1- pin of the IC (U1) to AGND for
single-ended input-signal measurement
When the user wishes to make a single-ended
signal measurement on AIN1+/AIN1-
JU16
Open* Disconnects the AIN1- pin of the IC (U1) from
AGND
When the user wishes to make a differential
signal measurement on AIN1+/AIN1-
1-2 Connects the DRDYOUT pin of the IC (U2) to the
SYNC signal (GP5) of the controller
When the user wishes to have the SYNC pin
driven by the DRDYOUT
JU17
Open* Disconnects the DRDYOUT pin of the IC (U2)
from the SYNC signal (GP5) of the controller
When the user wishes to have the SYNC pin
driven by the controller
1-2
Connects the user-supplied crystal (Y4) to the
crystal-oscillator input and output of the IC (U2)
Note: Y4 is not loaded by default, but can be
loaded by the user
When the user wishes to clock the IC (U2) by
the Y4 crystal (must be loaded by the user)
JU18
Open* Disconnects the user-supplied crystal (Y4) from
the IC (U2)
When the user does not wish to stimulate the IC
(U2) modulator clock by the Y4 crystal
Table 1. Jumper Settings (EV Kit)
MAX11040K Evaluation Kit/Daughterboard
_______________________________________________________________________________________ 5
Evaluate: MAX11040K
MAX11040K Evaluation Kit/Daughterboard
6 _______________________________________________________________________________________
Figure 1. MAX11040K EV Kit Main Window
JUMPER SHUNT
POSITION DESCRIPTION WHEN TO USE THIS OPTION
1-2* Connects the CLKOUT of the IC (U1) to the XIN
pin of the MAX11040K (U2) When the user wishes to cascade U2 with U1
JU19
Open Disconnects the CLKOUT of the IC (U1) from
the XIN pin of the MAX11040K (U2)**
When the user does not wish to cascade U2 with
U1
Table 1. Jumper Settings (EV Kit) (continued)
*
Default position.
**
Y4 is not loaded by default, but can be loaded by the user.
Evaluate: MAX11040K
MAX11040K Evaluation Kit/Daughterboard
_______________________________________________________________________________________ 7
Detailed Description of Software
The MAX11040K EV kit’s main window is shown in
Figure 1. The Setup group box, located at the top of
the window, contains Configuration, Sampling Instant
Control, and Output Data Rate Control group boxes.
Functions related to reading single-sample ADC values
in the ADC Conversion group box are located in the
middle section. Data-logging functions and data calcu-
lation are in the Data Logging group box, located at
the bottom of the main window.
Up to five devices can be cascaded by using the
daughterboards. Select the number of cascaded ICs
from the Number of Devices menu item.
Setup
All the settings in the Setup group box correspond to
the registers of the IC specified in the IC Selection
drop-down list. In the IC Selection drop-down list,
MAX11040K IC #1 and MAX11040K IC #2 represent
the ICs (U1 and U2) on the EV kit. MAX11040K IC #3,
MAX11040K IC #4, and MAX11040K IC #5 represent
the ICs on the optionally cascaded daughterboards.
When the EV kit software starts up, or when a different
IC is selected in the IC Selection drop-down list, the
Configuration, Sampling Instant Control, and Output
Data Rate Control group boxes display the content of
the IC specified in the IC Selection drop-down list.
Configuration
In the Configuration group box, the user can change
the value of the configuration register in the selected IC.
Each checkbox in the Configuration group box corre-
sponds to a bit in the configuration register. Click on
the checkbox to toggle each bit.
Sampling Instant Control
Adjust the appropriate scrollbars in the Sampling
Instant Control group box to set the sampling instant
delay for the input channels.
Output Data Rate Control
There are three panels in the Output Data Rate
Control group box, and each one of them has a differ-
ent way to set up the data rate of the IC. The user can
select one of them by checking the corresponding
radio button on the left of the panel.
To set the sample rate by directly controlling the ADC’s
register (coarse adjust and fine adjust), use the first
panel at the top of the Output Data Rate Control
group box. Select the coarse-adjusted output data rate
in the Coarse Adjust drop-down list, and adjust the
Fine Adjust scrollbar to set up the output data rate.
The Coarse Adjust drop-down list and the Fine Adjust
scrollbar correspond to the output data rate coarse
adjust register and the output data rate fine adjust reg-
ister, respectively. The actual data rate is displayed in
the Actual Data Rate label.
To set the sample rate by entering a desired sample
rate, and letting the EV kit software calculate the clos-
est possible sample rate, use the Request Data Rate
edit box. Enter the desired data rate into the Request
Data Rate edit box and press the enter key. The pro-
gram sets up the closest possible data rate automati-
cally. The actual data rate is displayed in the Actual
Data Rate label.
To set the sample rate by letting the software detect the
input frequency, and adjust the sample rate to a
desired number of samples per cycle, use the Auto
Adjust Sample Rate group box. The software detects
the frequency of the input signal on any channel select-
ed in the drop-down list. Set up the data rate based on
how many samples per input-signal cycle was request-
ed in the Samples/Cycle edit box. The actual data rate
is displayed in the Actual Data Rate label.
ADC Conversion
The ADC Value Display group box, shown in the ADC
Conversion group box, displays the output data codes
and the calculated voltage values for a single sample
of all of the channels on the IC specified in the IC
Selection drop-down list. Pressing the Convert button
in the ADC Conversion group box updates the status
of the ADC Value Display group box.
Check the Auto Convert checkbox to automatically
and repeatedly read the current ADC value at a rate set
by the Time Interval drop-down list.
Data Logging
Start Conversion
The Data Logging group box is located at the bottom
of the window. The user can select the desired number
of conversions in the Number of Samples drop-down
list. Press the Start Conversion button in the Data
Logging group box to start sampling at the rate that
was set by the Output Data Rate Control group box.
Output File Data
The Save to File button is not active until the sampling
is done. After sampling is finished, and before pressing
Evaluate: MAX11040K
MAX11040K Evaluation Kit/Daughterboard
8 _______________________________________________________________________________________
the Save to File button, the user needs to select in the
Output File Data group box which channels will have
their sampled data saved into the file. The software
keeps a record of channel selections for each IC.
Select the IC you wish to select in the IC Selection
drop-down list, to display and allow modification of
channel selection for that IC. Press the Select All
Channels on All ICs button to check all the checkbox-
es in the Output File Data group box for all ICs. Press
the Deselect All Channels on All ICs button to clear
all the checkboxes in the Output File Data group box.
Press the Save to File button to save the data from the
selected channels into a file.
Zero-Crossing Alignment Option
In the Option group box, when the Align to Zero
Crossing Point checkbox is checked, the program
detects the rising zero-crossing point in the sampled
data of the channel specified in the IC Selection and
Channel Selection drop-down lists. When the Save to
File button is pressed, the program saves the sampled
data starting from the rising zero-crossing point.
Calculation
After sampling is finished, press the Calculate button
to calculate the Frequency, RMS, MIN, MAX, and Avg
DC of the input signal of the channel specified in the IC
Selection and Channel Selection drop-down lists. The
calculation for Frequency uses a simple algorithm that
has limitations. The Frequency is calculated by mea-
suring the time between two rising zero-crossing
points. An error may show up in circumstances where
DC offset is on the order of the input-signal amplitude,
or if there is significant noise or other frequency content
in the signal that creates multiple zero crossings near
the fundamental crossing. To calculate these results for
a different channel, change the IC Selection and
Channel Selection drop-down list and press the
Calculate button.
Clear LED
When any of the LEDs on the EV kit and the daughter-
board are on, press the Clear LED button to turn off the
LEDs after the overflow and the overvoltage faults are
cleared.
Sync Pulse
Press the Sync Pulse button to synchronize the output
data timing for all cascaded devices.
Detailed Description of Hardware
MAX11040K EV Kit
The MAX11040K EV kit board provides a proven layout
for evaluating the IC’s 4-channel, simultaneous-sam-
pling ADC. The EV kit comes with two
MAX11040KGUU+s installed. Eight terminal blocks are
provided on the EV kit for all AIN inputs of the on-board
ICs. Four BNC connectors are also available for the
AIN0 and AIN1 inputs of IC #1 (U1).
Up to three additional parts can be connected to the
EV kit to increase the number of input channels, by
cascading the daughterboards to the EV kit.
See the
Daughterboard
section for more information.
Power Supply
Two separate power supplies are required to power up
the EV kit. Connect the analog voltage supply (from
+3V to +3.6V) to the AVDD connector and the analog
ground to the AGND connector. Connect the digital
voltage supply (from +2.7V to AVDD) to the DVDD con-
nector and the digital ground to the DGND connector
on the EV kit.
LEDs
There are four LED indicators (D1–D4) on the EV kit. D1
and D2 LEDs reflect the real-time logic levels on the
FAULT and OVRFLW pins, respectively. D3 and D4
LEDs latch on the fault conditions on the FAULT and
OVRFLW pins, respectively. When D3 or D4 is turned on,
press the Clear LED button in the EV kit software or
press the on-board pushbutton (S2) to turn off the LEDs
after the faults are cleared. All IC FAULT and OVRFLW
pins are open drain and respectively connected in a
wire-ORed configuration.
Daughterboard
The daughterboard comes with one MAX11040KGUU+
installed. The user can cascade the daughterboard to
the EV kit to increase the number of input channels.
The software supports up to three daughterboards cas-
cading to the EV kit.
Four terminal blocks are provided on the daughterboard
for all AIN inputs of the on-board ICs. Four BNC connec-
tors are also available for the AIN0 and AIN1 inputs of
the IC (U1).
Evaluate: MAX11040K
MAX11040K Evaluation Kit/Daughterboard
_______________________________________________________________________________________ 9
JUMPER SHUNT
POSITION DESCRIPTION WHEN TO USE THIS OPTION
1-2 Connects the on-board crystal (Y1) to the
crystal oscillator input and output of the IC (U1)
When the user wishes to stimulate the IC (U1)
modulator clock by the on-board crystal (Y1)
JU1
Open* Disconnects the on-board crystal from the IC
(U1)
When the user does not wish to stimulate the IC
(U1) modulator clock by the on-board crystal
(Y1)
1-2 Connects the XOUT pin of the IC (U1) to the
EX_XOUT pad
When the user-supplied external crystal
connects to the IC (U1) through the EX_XIN and
the EX_XOUT pads
JU2
Open* Disconnects the EX_XOUT pad from the XOUT
pin of the IC (U1) When an external crystal is not used
1-2 Connects the DRDYOUT pin of the IC (U1) to the
CO_DRDYOUT pin on the connector (J2)
Use this option when more IC daughterboards
need to be cascaded
JU3
2-3* Connects the DRDYOUT pin of the IC (U1) to the
interrupt pin (INT0) of the on-board controller
Use this option on the last IC daughterboard
that cascades to the IC EV kit
1-2*
Connects the XIN pin of the IC (U1) to the
CI_XIN pin on the J1 connector
Note: CI_XIN carries the CLKOUT signal from
the previous cascaded board
When the user wishes to stimulate the IC (U1)
modulator clock by the CLKOUT of the previous
cascaded board
JU4
2-3
Connects the XIN pin of the IC (U1) to the
EX_XIN pad
Note: User-supplied external crystal may be
connected to the IC (U1) through the EX_XIN
and the EX_XOUT pads
When the user does not wish to stimulate the IC
(U1) modulator clock by the CLKOUT of the
previous cascaded board
Table 2. Jumper Settings (Daughterboard)
Cascade
Carefully connect the boards by aligning the EV kit’s
14-pin connector (J12) with the 14-pin header (J1) of
the daughterboard. Gently press them together. The
two boards should be flush against each other. If more
daughterboards need to be cascaded to the EV kit,
connect the 14-pin connector (J2) of the last daughter-
board with the 14-pin header (J1) of the additional
daughterboard.
Place the shunt on pins 2-3 of JU3 on the last daughter-
board (the one farthest away from the EV kit board),
and place the shunt on pins 1-2 of JU3 on all other
boards (including the EV kit board).
Power Supply
Two separate power supplies are required to power up
the daughterboard. Connect the analog voltage supply
(from +3V to +3.6V) and the analog ground to the
AVDD and AGND connectors, respectively. Connect
the digital voltage supply (from +2.7V to AVDD) and the
digital ground to the DVDD and DGND connectors on
the daughterboard, respectively.
LEDs
There are four LED indicators (D1–D4) on the daughter-
board. D1 and D2 LEDs reflect the real-time logic levels
on the FAULT and the OVRFLW pins, respectively. D3
and D4 LEDs latch on the fault conditions on the FAULT
and the OVRFLW pins, respectively. When D3 or D4 is
turned on, press the Clear LED button in the EV kit soft-
ware (Figure 1) or press the on-board pushbutton (S2)
to turn off the LEDs after the faults are cleared. All IC
FAULT and OVRFLW pins are open drain and respec-
tively connected in a wired-ORed configuration.
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JUMPER SHUNT
POSITION DESCRIPTION WHEN TO USE THIS OPTION
1-2
Connects the AIN0- pin of the IC (U1) to the
AGND pin for single-ended input signal
measurement
When the user wishes to make a single-ended
signal measurement on AIN0+/AIN0-
JU5
Open* Disconnects the AIN0- pin of the IC (U1) from
the AGND pin
When the user wishes to make a differential
signal measurement on AIN0+/AIN0-
1-2
Connects the AIN1- pin of the IC (U1) to the
AGND pin for single-ended input signal
measurement
When the user wishes to make a single-ended
signal measurement on AIN1+/AIN1-
JU6
Open* Disconnects the AIN1- pin of the IC (U1) from
the AGND
When the user wishes to make a differential
signal measurement on AIN1+/AIN1-
1-2 Connects the DRDYOUT pin of the IC (U1) to the
SYNC signal (GP5) of the controller
When the user wishes to have the SYNC pin
driven by DRDYOUT
JU7
Open* Disconnects the DRDYOUT pin of the IC (U1)
from the SYNC signal (GP5) of the controller
When the user wishes to have the SYNC pin
driven by the controller
1-2
Connects the CLKOUT pin of the IC (U1) to the
CO_CLKOUT on the J2 connector
Note: CO_CLKOUT carries the CLKOUT signal
to the next cascaded daughterboard
When the user wishes to carry the CLKOUT of
U1 to the next cascaded board
JU11
2-3*
Connects the CI_XIN pin on the J1 connector to
the CO_CLKOUT pin on the J2 connector
Note: CI_XIN carries the CLKOUT signal from
the previous cascaded board
When the user wishes to carry the frequency
from the previous cascaded board to the next
cascaded board
Table 2. Jumper Settings (Daughterboard) (continued)
*
Default position.
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Figure 2a. MAX11040K EV Kit Schematic (Sheet 1 of 4)
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Figure 2b. MAX11040K EV Kit Schematic (Sheet 2 of 4)
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Figure 2c. MAX11040K EV Kit Schematic (Sheet 3 of 4)
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Figure 2d. MAX11040K EV Kit Schematic (Sheet 4 of 4)
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Figure 3. MAX11040K EV Kit Component Placement Guide—Top
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16 ______________________________________________________________________________________
Figure 4. MAX11040K EV Kit PCB Layout—Component Side
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Figure 5. MAX11040K EV Kit PCB Layout—Layer 2
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18 ______________________________________________________________________________________
Figure 6. MAX11040K EV Kit PCB Layout—Layer 3
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Figure 7. MAX11040K EV Kit PCB Layout—Layer 4
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20 ______________________________________________________________________________________
Figure 8. MAX11040K EV Kit PCB Layout—Layer 5
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Figure 9. MAX11040K EV Kit PCB Layout—Bottom Side
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Figure 10. MAX11040K EV Kit Component Placement Guide—Bottom
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Figure 11a. MAX11040K Daughterboard Schematic (Sheet 1 of 2)
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Figure 11b. MAX11040K Daughterboard Schematic (Sheet 2 of 2)
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Figure 12. MAX11040K Daughterboard Component Placement Guide—Top
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26 ______________________________________________________________________________________
Figure 13. MAX11040K Daughterboard PCB Layout—Component Side
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Figure 14. MAX11040K Daughterboard PCB Layout—Layer 2
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Figure 15. MAX11040K Daughterboard PCB Layout—Layer 3
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Figure 16. MAX11040K Daughterboard PCB Layout—Bottom
Figure 17. MAX11040K Daughterboard Component Placement Guide—Bottom
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Ordering Information
PART TYPE
MAX11040KEVKIT# EV Kit
MAX11040KDBEVKIT# Daughterboard
#
Denotes RoHS compliant.
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.
32
____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2011 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
Evaluate: MAX11040K
MAX11040K Evaluation Kit/Daughterboard
Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 11/11 Initial release —
