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Evaluates: MAXQ7667

MAXQ7667 Evaluation Kit

General Description

The MAXQ7667 evaluation kit (EV kit) demonstrates

distance measurement with the MAXQ7667.

The EV kit includes Windows XP

-, Windows

Vista

-, and Windows

7-compatible software for distance

measurements data acquisition through a USB cable.

Features

● Windows XP-, Windows Vista-, and Windows 7-

Compatible Software

● USB-PC Connection (Cable Included)

● USB Powered (External Power Supply Not Required)

● Real-Time Data Acquisition through the USB

Quick Start

The EV kit board is a plug-n-play, ultrasound echo acqui-

sition kit that connects to the PC through a USB cable.

The EV kit produces an ultrasound burst and samples the

echo and sends the information back to the PC. Distance

to multiple objects can be calculated from the echo. The

board does not require external power; it is powered

through the USB. The USB-to-serial driver can be down-

loaded from www.ftdichip.com/Drivers/VCP.htm.

The EV kit is preloaded with default firmware that

communicates with the MAXQ7667 evaluation software.

Software can be installed and run on any Windows-based

system.

19-5013; Rev 1; 2/14

Ordering Information appears at end of data sheet.

Windows, Windows XP, and Windows Vista are regis-

tered trademarks and registered service marks of Microsoft

Corporation.

Figure 1. MAXQ7667 EV-Kit Block Diagram

LNA

REF

2.5V

MAXQ7667

UART

5.0V

FTDI

MAXQ

MICRO-

CONTROLLER

SIGMA DELTA

ADC

ULTRA SOUND

TRANSDUCER

ULTRA SOUND BURST GENERATOR

SAR

ADC

5 CH

MUX

POWER-SUPPLY

TEMP-SUPPLY (PTC)

Summary of content (10 pages)

PAGE 1
Evaluates: MAXQ7667 MAXQ7667 Evaluation Kit General Description Quick Start The MAXQ7667 evaluation kit (EV kit) demonstrates distance measurement with the MAXQ7667. The EV kit board is a plug-n-play, ultrasound echo acquisition kit that connects to the PC through a USB cable. The EV kit produces an ultrasound burst and samples the echo and sends the information back to the PC. Distance to multiple objects can be calculated from the echo.
PAGE 2
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 integrates 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.
PAGE 3
MAXQ7667 Evaluation Kit Evaluates: MAXQ7667 Figure 2. MAXQ7667 GUI Application www.maximintegrated.
PAGE 4
Evaluates: MAXQ7667 MAXQ7667 Evaluation Kit EV Kit Extended Features The EV kit includes options for a single transducer or a dual transducer. The MAXQ7667 allows the user to work with one transducer (for transmit and receive) or with two transducers (one for transmit and one for receive). Using one transducer is cheaper and the solution becomes smaller; however, the transducer cannot receive while it is still ringing from the excitation during transmit.
PAGE 5
Evaluates: MAXQ7667 MAXQ7667 Evaluation Kit Table 4. EV Kit Connector J5 Description Table 5. EV Kit Connector JTAG Description J5 PIN # LABEL FUNCTION 1 DVDDIO 5V DVDDIO supply (output up to ~150mA) JTAG PIN # LABEL 1 TCK Test clock 2 AVDD 3.3V AVDD supply (output up to ~30mA) 2 GND Digital ground pin 3 TDO Test data output 3 P1.4 / MOSI GPIO port 1 bit 4 or SPI MOSI 4 +5 4 AIN1 Analog In 1 for SAR ADC 5 TMS Test mode select 5 P1.
PAGE 6
Evaluates: MAXQ7667 MAXQ7667 Evaluation Kit Component List (continued) DESIGNATION QTY DESCRIPTION DESIGNATION QTY 1 Res, ±5%, 6.8kΩ, 0603 DESCRIPTION 1 Green LED LG L29K-G2J1-24-Z R12 R13 1 8.25kΩ ±1% resistor (0603) LED2 1 Yellow LED LY L29K-H1K2-26-Z R14 1 1.78kΩ ±1% resistor (0603) 1 24.0kΩ ±1% resistor (0603) 1 Red LED LS L29K-G1J2-1-Z R15 LED3 R16, R17 2 0Ω resistors (1206) R24 1 49.9Ω ±1% resistor (0805) LED1 1 4.7kΩ ERA-S27J472V Panasonic PTC 0805 R25 1 1.
PAGE 7
MAXQ7667 Evaluation Kit Evaluates: MAXQ7667 Figure 3. MAXQ7667 EV Kit Schematic www.maximintegrated.
PAGE 8
MAXQ7667 Evaluation Kit Evaluates: MAXQ7667 Figure 4. MAXQ7667 Component Placement Guide— Component Side Figure 6. MAXQ7667 PCB Layout—Component Side Figure 5. MAXQ7667 Component Placement Guide—Solder Side Figure 7. MAXQ7667 PCB Layout—Solder Side www.maximintegrated.
PAGE 9
MAXQ7667 Evaluation Kit Evaluates: MAXQ7667 Ordering Information PART TYPE MAXQ7667EVKIT+ EV Kit +Denotes lead(Pb)-free and RoHS-compliant. www.maximintegrated.
PAGE 10
Evaluates: MAXQ7667 MAXQ7667 Evaluation Kit Revision History REVISION NUMBER REVISION DATE 0 9/13 Initial release — 1 5/14 New version of data sheet All DESCRIPTION PAGES CHANGED For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product.