Evaluates: MAX22707 MAX22707 Evaluation Kit Quick Start General Description Required Equipment The MAX22707 evaluation kit (EV kit) provides a proven design to evaluate MAX22707 low power, precision zero- MAX22707 EV kit crossing detector. Micro-USB cable (to PC or 5V Adaptor) or +5V bench supply The MAX22707 EV kit features an isolated power and Oscilloscope signal interface to configure and evaluate different modes. AC adaptor wire to AC Interface (110VAC or 220VAC) The EV kit features two independent MAX22707 sections or AC supply that can be evaluated in lowpass filter (LPF) configuration mode and bandpass filter (BPF) configuration mode. Warning: High voltage interface input. The user should be aware of the hazards associated with higher voltages, The EV kit comes with two MAX22707AUB+ (10 MAX, which could cause any of the associated test points or 3.05mm x 5.05mm footprint) devices installed. circuit traces to have a hazardous potential. For safety before handling, make sure to discharge high Features impedance nodes to earth ground after evaluation with high voltage interface. Robust Operation with Connector Interface to 110VAC and 220VAC Inputs Easy Evaluation of the MAX22707 in Different Procedure Configuration Modes EV Kit is USB Powered with Optional Power from The EV kit is fully assembled and tested. Terminal Block The default jumper settings in lowpass configuration Fully Assembled and Tested section configure the MAX22707 (U7) to operate in Type 3 Proven PCB Layout mode (full wave rectified input). RoHS Compliant The default jumper settings in bandpass configuration section configure the MAX22707 (U8) to operate in Type 1 Ordering Information appears at end of data sheet. single-ended mode. Follow the steps to verify board operation: See Table 1 Jumper Positions and Configurations See Table 2 Header Description Refer to the MAX22707 DS on different input types (Type 1-4) 1. Verify that all jumpers are in default positions (Table 1). 2. Power the EV kit with a micro-USB cable to a PC or 5V adaptor at the J9 micro-USB connector. Alternatively, the terminal block J6 can be used to power the EV kit from a benchtop power supply when J9 is not used. 3. Connect an oscilloscope probe at ZCO A OUTPUT J12(2) and ZCO B OUTPUT J13(2). 4. For evaluating the LPF mode, a shunt is installed across J1 (1-2). Verify the VCCA LED is green, indicating there is power available to the LPF section. To evaluate the BPF mode, skip step 10 of the procedure. 5. With the AC supply turned off, connect the line terminal to LINE connector J20. Connect the neutral terminal to NEUTRAL connector J22. 319-100834 Rev 0 12/21 MAX22707 Evaluation Kit Evaluates: MAX22707 6. Turn on the AC supply and observe for digital output 11. With the AC supply turned off, connect the line terminal transitions at ZCO A OUTPUT on the oscilloscope. to LINE+ connector J15. Connect the neutral terminal 7. Disable the AC supply and power supply in that order to LINE- connector J16. after evaluation. 12. Turn on the AC supply and observe for digital output 8. To evaluate other input types for LPF mode, see Table transitions at ZCO B OUTPUT on the oscilloscope. 3 for all modifications and configuration settings and 13. Disable the AC supply and power supply in that order follow steps 2-7. after evaluation. 9. Alternatively, to observe for AC input (attenuated low- 14. To evaluate other input types for BPF mode, see Table voltage level) and ZCO output at the high voltage side, 4 for all modifications and configuration settings and the oscilloscope power supply must be floating, and the follow steps 11-13. oscilloscope probes must be connected from the test 15. Alternatively, to observe for AC input (attenuated low- points provided at INP LP, INM LP, and J27 with voltage level) and ZCO output at the high voltage side, respect to the high voltage side ground GNDF. the oscilloscope power supply must be floating, and the 10. For evaluating the BPF mode, install a shunt across scope probes must be connected from the test points J1(2-3). Verify VCCB LED is green, indicating power is provided at INP BP, INM BP, and J28 with respect to available to the BPF section. high voltage side ground GNDF. MAX22707 EV Kit Photo