MAX31914/MAX31915 Evaluation Kits
Evaluate: MAX31914
MAX31915
General Description
The MAX31914/MAX31915 evaluation kits (EV kits) provide
the hardware necessary to evaluate the MAX31914 and
MAX31915 industrial octal digital input translators. There
is no software required for this EV kit.
Features
●
Easy Evaluation of the MAX31914 and MAX31915
●
RoHS Compliant
●
Proven PCB Layout
●
Fully Assembled and Tested
Ordering Information
appears at end of data sheet.
EV Kit Contents
●
Assembled circuit board including MAX31915
MAX31915 EV Kit Photo
19-6780; Rev 1; 5/15
MAX31914/MAX31915 Evaluation Kits
Evaluate: MAX31914
MAX31915
Detailed Description of Hardware
Connect Field Inputs
To connect field inputs to the PCB, remove all pullup
jumpers (FIN1–FIN8). Connect the field inputs to screw
terminal J5 or to the left pin of jumpers FIN1–FIN8.
Quick Start
Required Equipment
●
●
●
●
●
MAX31914 and MAX31915 EV kits
EV kit hardware (included)
Screwdriver
Wire
24V power supply
Adjust Current Limit
Procedure
1)
2)
3)
4)
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation:
Install a jumper on RIREF (J2).
Set the EV kit hardware on a nonconductive surface
to ensure that nothing on the PCB gets shorted to the
workspace.
Use the wires to connect J1 (VCC and GND) to a 24V
power supply and tighten the screws on the wire.
Connect field inputs to J5 or install jumpers on
FIN1–FIN8 to get the CMOS translation on J3 pins
OP1–OP8.
To adjust the current limit, remove the jumper on J2 and
connect an external resistor to the RIREF pin on J2.
Connect the other end of the resistor to GND. Another
option is to keep the jumper on J2 populated and change
the value of R1.
CMOS Logic Compatible Levels
To set the input trip points to CMOS logic compatiable
levels, populate the VTSELECT jumper on J6. When in
this mode, the RTX pins must be grounded by poplulat-
ing the jumpers on J7 to bypass the LEDs. The reference
resistor (R1) must also be changed to 100kΩ to adjust the
current limit.
Table 1. Description of Jumpers
JUMPER
J2
DESCRIPTION
RIREF: Connects R1 to the RIREF
pin.
DB0: Pulls DB0 down to GND. Used
to select digital glitch filter.
DB1: Pulls DB1 down to GND. Used
to select digital glitch filter.
VTSELECT: Pulls VTSELECT down
to GND to set the field input trip
points to CMOS-compatible logic.
See the
CMOS Logic-Compatible
Levels
section for more details.
Bypass LEDs: Connects return path
RTX to GND to bypass the LED.
Field Inputs Pullup: Connects field
input FINX to VIN.
Table 2. Description of LEDs (D1–D11)
LED
D1–D8
COLOR
Red
DESCRIPTION
Field Inputs: Field input is
logic-high.
FAULT:
The device has
detected a fault. Either the
field-supply voltage is too
low, the IC temperature is too
high, or both.
UVFAULT:
The device has
an undervoltage fault indicat-
ing the field supply voltage is
too low.
D10
Red
J6*
D11
Red
J7
FIN1–FIN8
*These
inputs have internal pullups.
www.maximintegrated.com
Maxim Integrated │ 2
MAX31914/MAX31915 Evaluation Kits
Evaluate: MAX31914
MAX31915
Revision History
REVISION
NUMBER
0
1
REVISION
DATE
8/13
5/15
Initial release
Added MAX31914 information to EV kit data sheet
DESCRIPTION
PAGES
CHANGED
—
1-7
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
© 2015 Maxim Integrated Products, Inc.
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