Evaluates: MAXQ7667 MAXQ7667 Evaluation Kit General Description Quick Start The MAXQ7667 evaluation kit (EV kit) demonstrates The EV kit board is a plug-n-play, ultrasound echo acqui- distance measurement with the MAXQ7667. sition kit that connects to the PC through a USB cable. The EV kit produces an ultrasound burst and samples the The EV kit includes Windows XP -, Windows echo and sends the information back to the PC. Distance Vista -, and Windows 7-compatible software for distance to multiple objects can be calculated from the echo. The measurements data acquisition through a USB cable. board does not require external power it is powered through the USB. The USB-to-serial driver can be down- Features loaded from www.ftdichip.com/Drivers/VCP.htm. Windows XP-, Windows Vista-, and Windows 7- The EV kit is preloaded with default firmware that Compatible Software communicates with the MAXQ7667 evaluation software. USB-PC Connection (Cable Included) Software can be installed and run on any Windows-based USB Powered (External Power Supply Not Required) system. Real-Time Data Acquisition through the USB Ordering Information appears at end of data sheet. ULTRA SOUND BURST GENERATOR ULTRA SOUND TRANSDUCER REF MAXQ7667 2.5V SIGMA DELTA LNA ADC MAXQ MICRO- CONTROLLER SAR 5 CH ADC MUX POWER-SUPPLY TEMP-SUPPLY (PTC) UART 5.0V FTDI Figure 1. MAXQ7667 EV-Kit Block Diagram Windows, Windows XP, and Windows Vista are regis- tered trademarks and registered service marks of Microsoft Corporation. 19-5013 Rev 1 2/14Evaluates: MAXQ7667 MAXQ7667 Evaluation Kit ADC. The data is sent back to the PC through UART for Detailed Description display and further analysis. The MAXQ7667 EV kit board is loaded with the MAXQ7667, Maxims integrated ultrasound acquisition Components of the EV Kit system. It integrates a microcontroller, ultrasound burst The EV kit comes with the following components: generator, and ultrasound echo receive path. It also inte- 1) MAXQ7667 evaluation board grates power management, a 5-channel 12-bit SAR ADC as auxiliary analog input, brown-out detection, GPIOs, 2) USB cable UART, SPI port, timers, and a watchdog. 3) MAXQ7667 GUI application On the EV kiit, the MAXQ7667 communicates through Data Acquisition through the EV Kit UART to a USB-to-UART bridge. The following steps are needed to acquire data through This USB-to-UART bridge communicates to the PC. A the EV kit: GUI that shows the echoes and allows control over the 1) Connect the EV kit board to the PC through the USB part is available. cable. The EV kit board receives power from the USB. The MAXQ7667 microcontroller is preloaded with 2) Install and run the MAXQ7667 GUI application. firmware that communicates with the MAXQ7667 GUI 3) The GUI automatically detects the EV kit and starts application. Upon receiving the logging command from sending bursts and receiving the echoes. The echo is the GUI, it sends an ultrasound burst and then acquires displayed as a graph. the echo using the echo receive path and the Sigma-Delta Maxim Integrated 2 www.maximintegrated.com