MAX31875 Evaluation Kit
Evaluates: MAX31875
General Description
The MAX31875 evaluation kit (EV kit) demonstrates the
MAX31875 ±2°C-accurate local temperature sensor with
I
2
C/SMBus interface. The EV kit includes a graphical user
interface (GUI) that provides communication over I
2
C with
an on-board master IC.
The MAX31875 EV kit comes with the MAX31875ROTZS+
installed.
Quick Start
Required Equipment
●
MAX31875 EV kit (includes Micro-USB cable)
●
USB2PMB2 USB to I
2
C interface board
●
Windows PC
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.
Features
●
Windows® 7, Windows 8/8.1, and Windows 10
Compatible Software
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,
MAX31875EVKitSetupV1.0.zip. Save the EV kit
software to a temporary folder and uncompress the
ZIP file.
Connect the MAX31875PMB1 board to the USB-
2PMB2 board.
Connect the USB cable from the PC to the USB-
2PMB2 board. Windows may require some time to
install its device driver.
Open the EV kit GUI, MAX31875EVKit.exe and
select
Device→MAX31875PMB
option
(or
MAX31875PMB).
Click the
Scan Adapters
button, then click the
Connect
button. See
Figure 1.
Click the
Sample Continuously
button to begin
plotting temperature data.
Ordering Information
appears at end of data sheet.
2)
3)
4)
5)
6)
Windows is a registered trademark and registered service mark of Microsoft
Corporation.
319-100052; Rev 0; 8/17
MAX31875 Evaluation Kit
Evaluates: MAX31875
General Description of Software
The main window of the MAX31875 EV kit software
contains controls to evaluate the MAX31875 temperature
sensor.
The
Attached Device Search
scans the I
2
C bus for
supported devices. The software GUI supports all eight
varieties of the MAX31875, which differ only in the I
2
C
slave device address.
Along the right side of the window, there are drop-down
boxes for each of the fields of the configuration register.
Additionally, the raw register values can be read and writ-
ten by the
Temperature, Configuration, THyst,
and
TOS
controls in the upper right corner of the window.
Sample rate is determined by the
0x006 Conversion
Rate[1:0]
drop-down box. Click
Sample Continuously
to read temperature register and plot on graph at the con-
figured sample rate.
The
One-Shot Read
button triggers a single temperature
reading. The MAX31875 must be in Shutdown mode to
enable One-Shot Read.
USB2PMB Adapter
The controls within the
USB2PMB
https://datasheets.
maximintegrated.com/en/ds/USB2PMB2.pdf
Adapter
groupbox allow the user to select the appropriate
USB2PMB devices. When
Scan Adapters
button is
pressed, it updates the drop-down list with all USB2PMB
devices. With the EV kit connected to the PC, either
PMOD031875
or a similar serial number appears within
the drop-down list. Make the appropriate selection respec-
tive of the IC and press the
Connect
button.
Figure 1. MAX31875 EV Kit Main Window
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MAX31875 Evaluation Kit
Evaluates: MAX31875
General Description of Hardware
Extension Cable
The MAX31875 EV kit demonstrates the MAX31875
±2°C-accurate local temperature sensor with I
2
C/SMBus
interface. The EV kit includes the USB2PMB2 master for
all I
2
C and I/O communication.
If using a 6-pin extension cable between the USB2PMB2
and MAX31875PMB1 board, only the top row (pins 1–6)
need to be connected.
Ordering Information
PART
MAX31875EVKIT#
#Denotes RoHS compliant.
TYPE
EV Kit
MAX31875 EV Kit Bill of Materials
ITEM
1
2
3
4
REF_DES DNI/DNP QTY
C1
J1
JU4
U1
1
1
1
1
MFG PART #
C1608X8R1E104K080AA
PEC06SAAN
TSW-106-08-S-D-RA
MAX31875
MANUFACTURER
TDK
SULLINS ELECTRONICS
CORP.
SAMTEC
MAXIM
SULLINS ELECTRONICS
CORP.
MAXIM
DESCRIPTION
CAPACITOR; SMT (0603);
0.1UF
CERAMIC CHIP; 0.1UF; 25V;
TOL=10%; TG=-55 DEGC TO +150 DEGC; TC=X8R
CONNECTOR; MALE; THROUGH HOLE;
PEC06SAAN
BREAKAWAY; STRAIGHT; 6PINS
CONNECTOR; THROUGH HOLE;
TSW-106-08-S-D-RA
DOUBLE ROW; RIGHT ANGLE; 12PINS;
EVKIT PART-IC; MAX31875; PACKAGE
OUTLINE: 21-100151A;
MAX31875
PACKAGE CODE: Z40A0+1; WLP4;
CONNECTOR; MALE; THROUGH HOLE;
PEC06SABN
BREAKAWAY; STRAIGHT; 6PINS;
HEAD=0.230IN; TAIL=0.230IN
PCB
PCB Board:MAX31875PMB1 EVALUATION KIT
VALUE
COMMENTS
5
6
TOTAL
J2
PCB
DNI
-
1
1
6
PEC06SABN
MAX31875PMB
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MAX31875 Evaluation Kit
Evaluates: MAX31875
MAX31875 EV Kit Schematic
JU4
TSW-106-08-S-D-RA
7
8
9
J1-7
J1-8
J1-9
J1-10
J1-11
J1-12
J1-1
J1-2
J1-3
J1-4
J1-5
J1-6
1
2
3 SCL
4 SDA
5
6
VDD
J1
C1
DD
0.1UF
V
VDD
10
11
12
1
2
3
4
5
6
PEC06SAAN
SDA
SCL
B1
B2
SDA
SCL
MAX31875
GND
A2
CONNECT A 2.2kΩ RESISTOR FROM SDA AND SCL TO V
DD
AS
NEEDED IF THE USB2PMB2# INTERFACE BOARD IS NOT USED.
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A1
V
DD
U1
MAX31875 Evaluation Kit
Evaluates: MAX31875
MAX31875 EV Kit PCB Layout Diagrams
MAX31875 EV Kit—Top Silkscreen
MAX31875 EV Kit—Top
MAX31875 EV Kit—Layer 2
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