MAX22288EVKIT# Analog Devices

Click here to ask an associate for production status of specific part numbers. MAX22288 Evaluation Kit Evaluates: MAX22288 General Description MAX22288 EV Kit Photo The MAX22288 evaluation kit (EV kit) provides a proven design to evaluate the MAX22288, a Home Bus System (HBS) compatible transceiver. The EV kit includes an evaluation board that features full functionalities of the MAX22288. The MAX22288 is typically used in HBS applications where external power supplies are sourced. Features Easy Evaluation of the MAX22288 Design for 57.6kbps Bus-Powered Application Allow for 9.6kbps to 200kbps Operation with Selective External Components Robust Design with 1kV Line-to-GND and Line-to- Line Surge Protection Fully Assembled and Tested Proven PCB Layout Ordering Information appears at end of data sheet. MAX22288 EV Kit Block Diagram AC-BLOCKING INDUCTOR H+ 18V POWER SUPPLY HOMEBUS CABLE H- C C 5V P OWER IO IO V CC SUPPLY AIO RTRM MAX22288 BIO R TRMO RST MICRO TERM DIN CONTROLLER DOUT 319-100788 Rev 0 8/21 MAX22288 Evaluation Kit Evaluates: MAX22288 Quick Start Recommended Equipment The MAX22288EVKIT The MAX22088EVKIT (optional) Two 24V, 200mA DC power supplies Data generator or function generator Digital oscilloscope A pair of twisted wires (22 or 24 AWG), 20cm or longer (optional) Procedures The EV kit is fully assembled and tested. Follow the steps to verify and start operation of the kit. 1. Verify that all jumpers are in their default positions as shown in Table 1. 2. Set the first 24V DC power supply to 5V and connect the supply terminal to the VCC test point (TP2). Connect the ground terminal to the GND test point. 3. Set the second 24V DC power supply to 18V and connect the supply terminal to XFMR IN test point (TP1). Connect the ground terminal to GND test point. 4. Turn on both power supplies. 5. Verify that the green LEDs DS1 and DS2 are both turned on. 6. Set the signal/function generator output to a 25kHz 0V-5V square wave with 50% duty cycle. 7. Connect the signal/function generator output to DIN test point (TP12). 8. Connect the oscilloscope probes to the H+ test point (TP7), H- test point (TP8), DIN test point (TP12), and DOUT test point (TP13). 9. Turn on the signal/function generator. 10. Verify that all signals are as shown in Figure 1. Table 1. MAX22288 EV Kit Shunt Positions JUMPER SHUNT POSITION DESCRIPTION Open Disable the MAX22288 (U1) transmitter output. J1 1-2* Enable the MAX22288 (U1) transmitter output. Open* Enable the MAX22288 (U1) internal high-pass filter. J2 1-2 Disable the MAX22288 (U1) internal high-pass filter. Open* Enable the MAX22288 (U1) internal watchdog timer. J3 1-2 Disable the MAX22288 (U1) internal watchdog timer. Open Disconnect the transformer from the H+ line. J4 1-2* Connect the transformer to the H+ line. Open Disconnect the transformer from the H- line. J5 1-2* Connect the transformer to the H- line. Open* Measure AIO and BIO signals. J9 1-2 Short AIO to BIO. NEVER PLACE A SHUNT at J9. *Default Position. Procedures to set up a complete Home Bus System (HBS) application (optional) 11. Turn both power supplies off and disconnect the signal/function generator. 12. Connect the MAX22288 EV kit to the MAX22088 EV kit remote circuit using a twisted pair. a. Connect the H+ of J6 (pin 1) on MAX22288 EV kit to H2+ of J9 (pin1) on the MAX22088 EV kit. b. Connect the H- of J6 (pin 2) on MAX22288 EV kit to H2- of J9 (pin2) on the MAX22088 EV kit. www.maximintegrated.com Maxim Integrated 2