MAX1240 Evaluation Kit
Evaluates: MAX1240, MAX1241
General Description
The MAX1240 evaluation kit (EV kit) demonstrates the
MAX1240, low-power, 12-bit serial ADC. The MAX1240
peripheral module (Pmod™) and the USB2PMB2 module
form a system, the MAX1240 EV kit. Windows XP, and
Windows
®
7/8/8.1/10-compatible software provides a
user friendly interface that demonstrates features of the
MAX1240.
The MAX1240 peripheral module comes installed with the
8-pin SO package, MAX1240ACSA++.
Quick Start
●
●
●
Required Equipment
Signal Source
Windows PC
MAX1240 EV kit (includes MAX1240PMB and
USB2PMB2 module with micro-USB cable)
Note:
In the following sections, software-related items are iden-
tified 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.
Features
●
6-Pin PMod-Compatible Connector SPI)
●
On-Board Voltage Reference (MAX6126)
●
Proven PCB Layout
●
Fully Assembled and Tested
●
Windows XP, Windows 7/8/8.1/10-Compatible
Software
Ordering Information
appears at end of data sheet.
MAX1240 EV Kit Photo
Windows are registered trademarks and registered service
marks of Microsoft Corporation.
Pmod is a trademark of Digilent Inc.
319-100110; Rev 2; 3/18
MAX1240 Evaluation Kit
Evaluates: MAX1240, MAX1241
Procedure
1)
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation:
Visit
http://www.maximintegrated.com/en/design/
tools/applications/evkit-software/
to download the
latest version of the EV kit software, MAX1240EVKit.
zip. Save the EV kit software to a temporary folder
and uncompress the ZIP file.
Align the X2 top row connector of the USB2PMB2
with the J1 connector of the MAX1240 Pmod.
Verify that shunts are in the default position as
shown in
Table 1.
Connect the USB cable from the PC to the
USB2PMB2 board.
Open the GUI, MAX1240EVKit.exe (Figure
1).
Click the
Scan Adapters
button. Then select the
option
PMODxxxxxx
(where xxxxxx is numeric) and
click the
Connect
button.
Connect the a signal source between 0V and 2.5V at
the AIN test point.
Start evaluating the MAX1240 by clicking on the
Sample Continuously
button.
General Description of Software
The main window of the MAX1240 peripheral module
contains controls to evaluate the MAX1240 IC. The
peripheral module GUI allows different sample sizes,
adjustable sampling rates, internal or external reference
options, and graphing that includes ADC count, voltage,
FFT, and histogram of the sampled signal.
2)
3)
4)
5)
6)
7)
8)
Device Setting
The
Device Setting
groupbox is mainly used for changing
the voltage reference. Select between the MAX1240 and
MAX1241, and entered in the appropriate voltage in the
V
REF
edit box. Please see
User-Supplied REF
section.
Sampling
The
Sample
groupbox allows for a single or continuous
sample. It also features adjusting the sampling rate and
sampling up to 16384 samples. The
Scope
captures data
in ADC Counts, Voltage(V), FFT,
and
Histogram
graph-
ing options.
Table 1. Jumper Descriptions
JUMPER
JU1
SHUNT
POSITION
Not installed*
Installed
1-2*
JU2
*Default
position.
1-3
Not Installed
DESCRIPTION
Internal reference when using
SHDN
pin. External reference when
SHDN
pin is unconnected.
Disconnects MAX6126 from the REF pin of the MAX1240.
External reference only. Connects MAX6126 to the REF pin of the MAX1240.
Connects
SHDN
pin of MAX1240 to VDD for normal operation.
Connects
SHDN
pin of MAX1240 to GND to place part into shutdown.
SHDN
pin of MAX1240 is unconnected to allow external reference
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MAX1240 Evaluation Kit
Evaluates: MAX1240, MAX1241
Figure 1. 1240 EV Kit Main Window
General Description of Hardware
User-Supplied VDD
The MAX1240 EV kit demonstrate the 12-bit ADC with
2.5V internal reference. The USB2PMB2 module and the
MAX1240 Pmod completes the system. The USB2PMB2
act as the master and generates all the SPI communications.
User-Supplied SPI
To evaluate the EV kit with a user-supplied
SPI
bus, the
connector J1 is a compatible PMod connector. If the
master does not have a compatible PMod connector, then
make connection directly to the SCLK, CSB, DOUT, and
GND test points.
The MAX1240 is powered through USB and regulated to
3.3V by default when a PMod compatible master module
is connected to the J1 connector of the EV kit. For a user-
supplied VDD, a PMod master module is not allowed on
the J1 connector. The user will need to apply a voltage
between +2.7V and +3.6V at the VDD test point.
User-Supplied REF
The internal reference is set at 2.5V. The MAX1240PMB
comes with an on-board MAX6126, 2.048V reference. To
use this feature, a shunt on JU1 header must be installed.
In order to use other external reference option, do not
place shunt on header JU2 and apply 1V to VDD + 50mV
to REF test point.
Ordering Information
PART
MAX1240EVKIT#
MAX1240PMB#
USB2PMB2#
#Denotes
RoHS compliant.
TYPE
EV KIT
Peripheral Module
Adapter Board
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MAX1240 Evaluation Kit
Evaluates: MAX1240, MAX1241
MAX1240 EV Kit Bill of Materials
ITEM
1
QTY
7
REF DES
AIN, CSB, REF,
VDD, DOUT,
SCLK, SHDNB
MFG PART #
MANUFACTURER
5010 KEYSTONE
N/A
VALUE
DESCRIPTION
TESTPOINT WITH 1.80MM
HOLE DIA, RED,
MULTIPURPOSE; NOT FOR COLD
TEST
CAPACITOR; SMT (0603);
CERAMIC CHIP; 0.1UF; 50V;
TOL=10%; TG=-55 DEGC TO +125
DEGC; TC=X7R;NOTE: NOT
RECOMMENDED FOR NEW
DESIGN USE 20-000u1-01
CAPACITOR; SMT (0603);
CERAMIC; 4.7UF; 6.3V; TOL=20%;
MODEL=C SERIES; TG=-55 DEGC
TO +85 DEGC; TC=X5R
CAPACITOR; SMT (0603);
CERAMIC CHIP; 1UF; 50V;
TOL=10%; MODEL=_MK SERIES;
TG=-55 DEGC TO +85 DEGC
TEST POINT; PIN DIA=0.125IN;
TOTAL LENGTH=0.445IN; BOARD
HOLE=0.063IN; BLACK;
PHOSPHOR BRONZE WIRE
SILVER PLATE FINISH;
RECOMMENDED FOR BOARD
THICKNESS=0.062IN; NOT FOR
COLD TEST
EVKIT PART-CONNECTOR;
MALE; THROUGH HOLE;
BREAKAWAY; RIGHT ANGLE;
6PINS; NOTE: RE-ARRANGED
PIN SEQUENCE; PIN 1 ON THE
RIGHT
CONNECTOR; MALE;
THROUGH HOLE; BREAKAWAY;
STRAIGHT; 2PINS
CONNECTOR; MALE;
THROUGH HOLE; BREAKAWAY;
STRAIGHT; 3PINS
0
RESISTOR; 0603; 0 OHM;
5%; JUMPER; 0.10W; THICK FILM
IC; ADC; +2.7V;
LOWER-POWER; 12-BIT SERIAL
ADC; NSOIC8
IC; VREF; ULTRA-HIGH
PRECISION; ULTRA-LOW NOISE;
SERIES VOLTAGE REFERENCE;
UMAX8
COMMENTS
2
4
C1, C4, C6, C7
C0603C104K5RAC;
C1608X7R1H104K
KEMET; TDK
0.1UF
3
2
C2, C3
C1608X5R0J475M080AB;
GRM188R60J475ME19;
JMK107BJ475MA-T
UMK107BJ105KA-T;
C1608X5R1H105K080AB;
CL10A105KB8NNN;
GRM188R61H105KAAL
TDK/MURATA/TAIYO YUDEN
4.7UF
4
1
C5
TAIYO YUDEN; TDK;
SAMSUNG; MURATA
1UF
5
1
GND
5011 KEYSTONE
N/A
6
1
J1
PBC06SBAN
SULLINS ELECTRONICS CORP.
PBC06SBAN
7
1
JU1
PEC02SAAN
SULLINS
PEC02SAAN
8
1
JU2
PEC03SAAN
RC1608J000CS;
CR0603-J/-000ELF;
RC0603JR-070RL
MAX1240BESA/V+
SULLINS
PEC03SAAN
9
1
R1
SAMSUNG ELECTRONICS/
BOURNS/YAGEO PH
10
1
U1
MAXIM
MAX1240BESA/V+
11
TOTAL
1
21
U2
MAX6126A21+
MAXIM
MAX6126A21+
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Maxim Integrated
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4
1
3
GND
GNDS
0.1UF
5
8
3
4
I.C.
I.C.
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VDD
MAX1240PMB Schematic
MAX1240 Evaluation Kit
VDD
C2
4.7UF
0.1UF
C1
AIN
R1
MAX1240BESA/V+
1
U1
SCLK
8
CSB
DOUT
VDD
SCLK
CSB
DOUT
CSB
PBC06SBAN
J1
0
VDD
AIN
SHDN
REF
GND
SCLK
CS
DOUT
GND
5
6
7
1
2
3
4
5
6
VDD
C8
SHDNB
3
2
4
2
OPEN
DOUT
SCLK
PEC03SAAN
JU2
VDD
PEC02SAAN
6
7
1
2
MAX6126A21+
OUTS
OUTF
0.1UF
4.7UF
U2
JU1
REF
2
IN
Evaluates: MAX1240, MAX1241
1UF
C5
C4
1
0.1UF
NR
C7
C3
C6
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