Datasheet
Maxim Integrated
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www.maximintegrated.com
Evaluates: MAXQ7667
MAXQ7667 Evaluation Kit
Detailed Description
The MAXQ7667 EV kit board is loaded with the
MAXQ7667, Maxim’s integrated ultrasound acquisition
system. It integrates a microcontroller, ultrasound burst
generator, and ultrasound echo receive path. It also inte-
grates power management, a 5-channel 12-bit SAR ADC
as auxiliary analog input, brown-out detection, GPIOs,
UART, SPI port, timers, and a watchdog.
On the EV kiit, the MAXQ7667 communicates through
UART to a USB-to-UART bridge.
This USB-to-UART bridge communicates to the PC. A
GUI that shows the echoes and allows control over the
part is available.
The MAXQ7667 microcontroller is preloaded with
firmware that communicates with the MAXQ7667 GUI
application. Upon receiving the logging command from
the GUI, it sends an ultrasound burst and then acquires
the echo using the echo receive path and the Sigma-Delta
ADC. The data is sent back to the PC through UART for
display and further analysis.
Components of the EV Kit
The EV kit comes with the following components:
1) MAXQ7667 evaluation board
2) USB cable
3) MAXQ7667 GUI application
Data Acquisition through the EV Kit
The following steps are needed to acquire data through
the EV kit:
1) Connect the EV kit board to the PC through the USB
cable. The EV kit board receives power from the USB.
2) Install and run the MAXQ7667 GUI application.
3) The GUI automatically detects the EV kit and starts
sending bursts and receiving the echoes. The echo is
displayed as a graph.