MAX35103EVKIT2# Analog Devices

Evaluates: MAX35103, MAX32620 MAX35103EVKIT2 Evaluation Kit General Description Benefits and Features The MAX35103EVKIT2 provides an application example Easy Evaluation of the MAX35103 in an Embedded using the MAX35103 time-to-digital converter to measure Environment. water flow as part of an off-the-shelf residential irrigation Audiowell Ultrasonic DN20 Ultrasonic Transducer system. The kit includes a PCB and ultrasonic transducer Assembly assembly that can be added to standard 24VAC irrigation IAR Arm Development Environment Supported systems to provide enhanced shut-off irrigation control. Flexible Input Power Options for Desktop or Field The kit features a MAX32620 Arm Cortex -M4 low-pow- Development Enabled by the MAX15062 er MCU that executes application firmware. Debug sup- port is provided by a 10-pin JTAG connector and a 3.3V TTL UART connector. Future Mbed support is provided by the included MAX32625PICO module. Ordering Information appears at end of data sheet. The kit is designed to be inserted between a 24VAC irri- gation controller and an irrigation valve. The valve and Arm and Cortex are registered trademarks and Mbed is a trademark controller are optional and are not included but can easily of Arm Limited (or its subsidiaries) in the US and/or elsewhere. be obtained at most home improvement retailers. MAX35103EVKIT2 Example Application 319-100094 Rev 0 11/17MAX35103EVKIT2 Evaluation Kit Evaluates: MAX35103, MAX32620 Procedure MAX35103EVKIT2 Files The MAX35103EVKIT2 can be quickly evaluated without FILE DESCRIPTION access to an irrigation system as follows. See Figure 1 for MAX35103EVKIT2.ZIP Firmware Package J2 connection details. 1) Connect one transducer wire pair from the transducer Quick Start to the piezo up J2 screw terminals. Required Equipment 2) Connect the other transducer wire pair from the Included: transducer to the piezo down J2 screw terminals. PCB containing the MAX35103 time-to-digital converter 3) Fill the ultrasonic transducer assembly with water or Audiowell ultrasonic DN20 transducer completely immerse the transducer in water. Optional equipment not included: 4) Apply 9V to 24V AC or DC power to the PCB through the J2 screw terminal block. The silkscreen on the 24VAC irrigation controller bottom of the PCB identifies the two POWER 24VAC irrigation valve connectors. IAR-compatible Arm JTAG adapter with 10-pin Arm 5) Observe the red LED (D1) illuminate continually. connector (for IAR support) 6) Observe the green LED (D2) blinking to indicate that FTDI TTL-232R-3V3 USB serial port cable or the board and the water-filled transducer is operating compatible (for IAR-based debug support) correctly. PC running terminal software 24V AC/DC benchtop power supply or power adapter POWER VALVE PIEZO UP+ PIEZO UP- PIEZO DOWN+ PIEZO DOWN- RTD/THERMISTOR J2 MAX35104EVKIT2 PCB Figure 1. J2 Screw Terminal Pinout Maxim Integrated 2 www.maximintegrated.com