MAX31915EVKIT# Analog Devices

Evaluate: MAX31914 MAX31914/MAX31915 Evaluation Kits MAX31915 General Description Features The MAX31914/MAX31915 evaluation kits (EV kits) provide Easy Evaluation of the MAX31914 and MAX31915 the hardware necessary to evaluate the MAX31914 and RoHS Compliant MAX31915 industrial octal digital input translators. There Proven PCB Layout is no software required for this EV kit. Fully Assembled and Tested EV Kit Contents Assembled circuit board including MAX31915 Ordering Information appears at end of data sheet. MAX31915 EV Kit Photo 19-6780 Rev 1 5/15Evaluate: MAX31914 MAX31914/MAX31915 Evaluation Kits MAX31915 Quick Start Detailed Description of Hardware Required Equipment Connect Field Inputs MAX31914 and MAX31915 EV kits To connect field inputs to the PCB, remove all pullup jumpers (FIN1FIN8). Connect the field inputs to screw EV kit hardware (included) terminal J5 or to the left pin of jumpers FIN1FIN8. Screwdriver Adjust Current Limit Wire To adjust the current limit, remove the jumper on J2 and 24V power supply connect an external resistor to the RIREF pin on J2. Procedure Connect the other end of the resistor to GND. Another option is to keep the jumper on J2 populated and change The EV kit is fully assembled and tested. Follow the steps the value of R1. below to verify board operation: 1) Install a jumper on RIREF (J2). CMOS Logic Compatible Levels 2) Set the EV kit hardware on a nonconductive surface To set the input trip points to CMOS logic compatiable to ensure that nothing on the PCB gets shorted to the levels, populate the VTSELECT jumper on J6. When in workspace. this mode, the RTX pins must be grounded by poplulat- 3) Use the wires to connect J1 (VCC and GND) to a 24V ing the jumpers on J7 to bypass the LEDs. The reference power supply and tighten the screws on the wire. resistor (R1) must also be changed to 100k to adjust the 4) Connect field inputs to J5 or install jumpers on current limit. FIN1FIN8 to get the CMOS translation on J3 pins OP1OP8. Table 1. Description of Jumpers Table 2. Description of LEDs (D1D11) JUMPER DESCRIPTION LED COLOR DESCRIPTION RIREF: Connects R1 to the RIREF Field Inputs: Field input is J2 D1D8 Red pin. logic-high. DB0: Pulls DB0 down to GND. Used FAULT: The device has to select digital glitch filter. detected a fault. Either the D10 Red field-supply voltage is too DB1: Pulls DB1 down to GND. Used low, the IC temperature is too to select digital glitch filter. high, or both. J6* VTSELECT: Pulls VTSELECT down UVFAULT: The device has to GND to set the field input trip an undervoltage fault indicat- points to CMOS-compatible logic. D11 Red ing the field supply voltage is See the CMOS Logic-Compatible too low. Levels section for more details. Bypass LEDs: Connects return path J7 RTX to GND to bypass the LED. Field Inputs Pullup: Connects field FIN1FIN8 input FINX to VIN. *These inputs have internal pullups. Maxim Integrated 2 www.maximintegrated.com