MAX14882EVKIT# Analog Devices

Click here for production status of specific part numbers. Evaluates: MAX14882 MAX14882 Evaluation Kit General Description Quick Start The MAX14882 evaluation kit (EV kit) is a fully assembled Required Equipment and tested PCB that demonstrates the functionality of the MAX14882 EV kit MAX14882 isolated controller area network (CAN) trans- 3.3V, 500mA DC power supply ceiver. The EV kit operates from a single 3.3V supply and features an on-board isolated power supply to power the Signal/function generator secondary side of the circuit. Oscilloscope Features Procedure Operates from a Single 3.3V Supply The EV kit is fully assembled and tested. Follow the steps below to verify board operation. Terminal Block Connectors for Easy RS-485/RS-422 Evaluation 1) Set the DC power supply to 3.3V. 2) Connect the DC power supply to the 3.3V test point 5000V Isolation for 60s RMS (T15). Connect the ground terminal to the GND Fully Assembled and Tested testpoint (T14). 3) Ensure that the jumpers are in their default positions (see Table 1). 4) Turn on the power supply. 5) Connect the oscilloscope to the CANH and CANL test points (T12 and T13). 6) Set the signal/function generator to output a 500kHz 0-to-3.3V square wave. 7) Connect the signal/function generator to the TXD test point (T7). 8) Verify that the CANH and CANL outputs switch as the sig- nal toggles. Ordering Information appears at end of data sheet. 319-100188 Rev 0 5/18Evaluates: MAX14882 MAX14882 Evaluation Kit To use an external supply on the isolated side of the Detailed Description of Hardware board, remove the shunt on the J1 jumper and apply the The MAX14882 EV kit is a fully assembled and tested voltage to the V test point (T8). LDO circuit board for evaluating the MAX14882 isolated CAN transceiver (U1). The EV kit is powered from a single 3.3V power supply. Evaluating the Isolated CAN Interface External Power Supply The MAX14882 EV kit includes test points to access The power on the EV kit is derived from a single 3.3V CANH (T12) and CANL (T13) for easy evaluation. To ver- source. Connect an external supply to the +3.3V test ify operation in a CAN system, connect the transceiver to point (T15) to supply the 3.3V to the logic-side (A) of the the network using the P3 terminal block and use the TXD circuit. The MAX14882 drives the on-board transformer (T7) and RXD (T4) test points, or the P2 jumper pad, to 1CT:2.4CT to generate the supply voltage needed on the connect the device to a logic controller. isolated side of the transceiver. Table 1. Jumper Table (J1-J5) JUMPER SHUNT POSITION DESCRIPTION 1-2* V is connected to the output of the transformer circuit. LDO J1 V is connected to ground. Connect an external 5V to V to power the iso- LDO DDB 2-3 lated side of the MAX14882. 1-2 POL is connected to V . DDA J2 2-3* POL is connected to GNDA. On-board termination network is not connected to CANH. Open jumpers J3 and J4 Open to disable on-board termination between CANH and CANL. J3 On-board termination network is connected between CANH and CANL. Close J4 to Closed* enable split termination with the capacitor to GNDB. Open J4 for resistive termina- tion only. Split termination capacitor is not connected to GNDB. Open J3 and J4 to disable Open the on-board termination between CANH and CANL. J4 Closed* Split termination capacitor is conneced to the GNDB. 1-2 TXD is connected to V . DDA J5 2-3* TXD is connected to GNDA. *Default position. Ordering Information PART TYPE MAX14882EVKIT EV Kit Denotes RoHS compliant. Maxim Integrated 2 www.maximintegrated.com