Microchip Technology HV7351 User Manual

HV7351

Ultrasound Tx Beamformer

Evaluation Board

User’s Guide

 2015 Microchip Technology Inc. DS50002375A

Note the following details of the code protection feature on Microchip devices:

YSTEM

CERTIFIE DBYDNV

== ISO/TS16949==

• Microchip products meet the specification contained in their particular Microchip Data Sheet.

• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.

• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.

• Microchip is willing to work with the customer who is concerned about the integrity of their code.

• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”

Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.

Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.

Trademarks

The Microchip name and logo, the Microchip logo, dsPIC,
FlashFlex, flexPWR, JukeBlox, K
LANCheck, MediaLB, MOST, MOST logo, MPLAB,
OptoLyzer, PIC, PICSTART, PIC
SST, SST Logo, SuperFlash and UNI/O are registered
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.

The Embedded Control Solutions Company and mTouch are
registered trademarks of Microchip Technology Incorporated
in the U.S.A.

Analog-for-the-Digital Age, BodyCom, chipKIT, chipKIT logo,
CodeGuard, dsPICDEM, dsPICDEM.net, ECAN, In-Circuit
Serial Programming, ICSP, Inter-Chip Connectivity, KleerNet,
KleerNet logo, MiWi, MPASM, MPF, MPLAB Certified logo,
MPLIB, MPLINK, MultiTRAK, NetDetach, Omniscient Code
Generation, PICDEM, PICDEM.net, PICkit, PICtail,
RightTouch logo, REAL ICE, SQI, Serial Quad I/O, Total
Endurance, TSHARC, USBCheck, VariSense, ViewSpan,
WiperLock, Wireless DNA, and ZENA are trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.

SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.

Silicon Storage Technology is a registered trademark of
Microchip Technology Inc. in other countries.

GestIC is a registered trademarks of Microchip Technology
Germany II GmbH & Co. KG, a subsidiary of Microchip
Technology Inc., in other countries.

All other trademarks mentioned herein are property of their
respective companies.

© 2015, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.

ISBN: 978-1-63277-403-3

EELOQ, KEELOQ logo, Kleer,

32

logo, RightTouch, SpyNIC,

QUALITYMANAGEMENTS

DS50002375A-page 2  2015 Microchip Technology Inc.

Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.

®

MCUs and dsPIC® DSCs, KEELOQ

®

code hopping

Object of Declaration: HV7351 Ultrasound Tx Beamformer Evaluation Board

 2015 Microchip Technology Inc. DS50002375A-page 3

NOTES:

DS50002375A-page 4  2015 Microchip Technology Inc.

HV7351

ULTRASOUND TX BEAMFORMER

EVALUATION BOARD USER’S GUIDE

Table of Contents

Preface ........................................................................................................................... 7

Introduction............................................................................................................ 7

Document Layout .................................................................................................. 7

Conventions Used in this Guide ........................................................................... 8

Recommended Reading........................................................................................ 9

The Microchip Web Site ........................................................................................ 9

Customer Support ................................................................................................. 9

Document Revision History ................................................................................... 9

Chapter 1. Product Overview

1.1 Introduction ................................................................................................... 11

1.2 HV7351 Device Overview ............................................................................ 11

1.3 Board Overview ............................................................................................ 11

1.4 What the HV7351 Ultrasound Tx Beamformer Evaluation Board

Kit Includes ............................................................................................. 13

Chapter 2. Installation and Operation

2.1 Getting Started ............................................................................................. 15

2.2 Setup Procedure .......................................................................................... 15

2.3 Evaluating The HV7351 Ultrasound Tx Beamformer Evaluation Board ....... 18

2.4 Normal Operation ......................................................................................... 18

Chapter 3. Printed Circuit Board Layout Techniques

Appendix A. Schematic and Layouts

A.1 Introduction .................................................................................................. 21

A.2 Board – Schematic ....................................................................................... 22

A.3 Board – Top Layer ....................................................................................... 23

A.4 Board – Top Silk Layer ................................................................................ 23

A.5 Board – Middle Layer ................................................................................... 24

A.6 Board – Bottom Layer .................................................................................. 24

A.7 Board – Bottom Silk Layer ........................................................................... 25

A.8 Board – All Layers, and Dimension .............................................................. 25

Appendix B. Bill of Materials (BOM)........................................................................... 27

Appendix C. Plots and Waveforms

C.1 HV7351 Typical Waveforms ........................................................................ 29

Worldwide Sales and Service .................................................................................... 34

 2015 Microchip Technology Inc. DS50002375A-page 5

HV7351 Ultrasound Tx Beamformer Evaluation Board User’s Guide

NOTES:

DS50002375A-page 6  2015 Microchip Technology Inc.

HV7351

ULTRASOUND TX BEAMFORMER

EVALUATION BOARD USER’S GUIDE

Preface

NOTICE TO CUSTOMERS

All documentation becomes dated, and this manual is no exception. Microchip tools and
documentation are constantly evolving to meet customer needs, so some actual dialogs
and/or tool descriptions may differ from those in this document. Please refer to our web site
(www.microchip.com) to obtain the latest documentation available.

Documents are identified with a “DS” number. This number is located on the bottom of each
page, in front of the page number. The numbering convention for the DS number is
“DSXXXXXXXXA”, where “XXXXXXXX” is the document number and “A” is the revision level
of the document.

For the most up-to-date information on development tools, see the MPLAB
Select the Help menu, and then Topics to open a list of available online help files.

®

IDE online help.

INTRODUCTION

This chapter contains general information that will be useful to know before using the
HV7351 Ultrasound Tx Beamformer Evaluation Board. Items discussed in this chapter
include:

• Document Layout

• Conventions Used in this Guide

• Recommended Reading

• The Microchip Web Site

• Customer Support

• Document Revision History

DOCUMENT LAYOUT

This document describes how to use the HV7351 Ultrasound Tx Beamformer
Evaluation Board as a development tool to emulate and debug firmware on a target
board. The manual layout is as follows:

• Chapter 1. “Product Overview” – Important information about the HV7351

Ultrasound Tx Beamformer Evaluation Board.

• Chapter 2. “Installation and Operation” – This chapter includes a detailed

description of each function of the demonstration board and instructions on how to
begin using the board.

• Chapter 3. “Printed Circuit Board Layout Techniques” – This chapter provides

in-depth information on the recommended PCB Layout Techniques to optimally
use the board.

• Appendix A. “Schematic and Layouts” – Shows the schematic and layout

diagrams for the HV7351 Ultrasound Tx Beamformer Evaluation Board.

• Appendix B. “Bill of Materials (BOM)” – Lists the parts used to build the

HV7351 Ultrasound Tx Beamformer Evaluation Board.

• Appendix C. “Plots and Waveforms” – Describes the various plots and

waveforms for the HV7351 Ultrasound Tx Beamformer Evaluation Board.

 2015 Microchip Technology Inc. DS50002375A-page 7

HV7351 Ultrasound Tx Beamformer Evaluation Board User’s Guide

CONVENTIONS USED IN THIS GUIDE

This manual uses the following documentation conventions:

DOCUMENTATION CONVENTIONS

Description Represents Examples

Arial font:

Italic characters Referenced books MPLAB® IDE User’s Guide

Emphasized text ...is the only compiler...

Initial caps A window the Output window

A dialog the Settings dialog
A menu selection select Enable Programmer

Quotes A field name in a window or

dialog

Underlined, italic text with
right angle bracket

Bold characters A dialog button Click OK

N‘Rnnnn A number in verilog format,

Text in angle brackets < > A key on the keyboard Press <Enter>, <F1>

Courier New font:

Plain Courier New Sample source code #define START

Italic Courier New A variable argument file.o, where file can be

Square brackets [ ] Optional arguments mcc18 [options] file

Curly brackets and pipe
character: { | }

Ellipses... Replaces repeated text var_name [,

A menu path File>Save

A tab Click the Power tab

where N is the total number of
digits, R is the radix and n is a
digit.

Filenames autoexec.bat
File paths c:\mcc18\h
Keywords _asm, _endasm, static
Command-line options -Opa+, -Opa-
Bit values 0, 1
Constants 0xFF, ‘A’

Choice of mutually exclusive
arguments; an OR selection

Represents code supplied by
user

“Save project before build”

4‘b0010, 2‘hF1

any valid filename

[options]

errorlevel {0|1}

var_name...]

void main (void)
{ ...
}

DS50002375A-page 8  2015 Microchip Technology Inc.

RECOMMENDED READING

This user’s guide describes how to utilize the HV7351 Ultrasound Tx Beamformer
Evaluation Board. Another useful document is listed below. The following Microchip
document is available and recommended as a supplemental reference resource.

• HV7351 Data Sheet – “8-Channel ±70V 3A Programmable High Voltage

Ultrasound Transmit Beamformer” (DS20005412).

THE MICROCHIP WEB SITE

Microchip provides online support via our web site at www.microchip.com. This web
site is used as a means to make files and information easily available to customers.
Accessible by using your favorite Internet browser, the web site contains the following
information:

• Product Support – Data sheets and errata, application notes and sample

programs, design resources, user’s guides and hardware support documents,
latest software releases and archived software

• General Technical Support – Frequently Asked Questions (FAQs), technical

support requests, online discussion groups, Microchip consultant program
member listing

• Business of Microchip – Product selector and ordering guides, latest Microchip

press releases, listing of seminars and events, listings of Microchip sales offices,
distributors and factory representatives

Preface

CUSTOMER SUPPORT

Users of Microchip products can receive assistance through several channels:

• Distributor or Representative

• Local Sales Office

• Field Application Engineer (FAE)

• Technical Support

Customers should contact their distributor, representative or field application engineer
(FAE) for support. Local sales offices are also available to help customers. A listing of
sales offices and locations is included in the back of this document.

Technical support is available through the web site at:

http://www.microchip.com/support

DOCUMENT REVISION HISTORY

Revision A (June 2015)

• Initial Release of this Document.

 2015 Microchip Technology Inc. DS50002375A-page 9

HV7351 Ultrasound Tx Beamformer Evaluation Board User’s Guide

NOTES:

DS50002375A-page 10  2015 Microchip Technology Inc.

Chapter 1. Product Overview

1.1 INTRODUCTION

This chapter discusses the following topics:

• HV7351 Device Overview

• Board Overview

• What the HV7351 Ultrasound Tx Beamformer Evaluation Board Kit Includes

1.2 HV7351 DEVICE OVERVIEW

The Microchip Technology Inc. HV7351 is a monolithic, eight channel, high-speed,
high-voltage ultrasound transmitter Return-To-Zero (RTZ) programmable pulser. This
integrated, high-performance circuit comes in a single 11 x 11 x 0.9 mm, 80-lead DFN
package.

Each channel is capable of swinging up to ±70V with an active discharge back to 0V.
The outputs can source and sink more than 3A to achieve fast output rise and fall times.
The active discharge is also capable of sourcing and sinking 3A for a fast return to
ground. The digital beamforming topology of the HV7351 will significantly reduce the
number of I/O logic control lines to the transmitter.

Each output is controlled by a 16 or 32-bit serial shift register. An arbitrary pattern can
be generated depending on what is loaded into the shift registers, including four
independent pattern options.

Once the patterns are loaded, the user can quickly select any of the four predefined
patterns without having to clock in new data. A programmable 10-bit delay counter is
provided for each output. This allows the user to program different delay times for each
channel for beamforming.

HV7351

ULTRASOUND TX BEAMFORMER

EVALUATION BOARD USER’S GUIDE

1.3 BOARD OVERVIEW

There are two built-in Complex Programmable Logic Devices (CPLDs) and one serial
EEPROM on the board to provide multiple demo waveform patterns. Other custom
experimental data can be easily downloaded to these CPLDs/PROMs via the 6-pin
Joint Test Action Group (JTAG) interface.

The HV7351 Board output waveforms can be directly displayed using an oscilloscope,
by connecting the scope probe to the test points TX1 - TX8 and GND. The soldering
jumper can select whether or not to connect the on-board dummy-load, a 330 pF
capacitor paralleling with a 2.5 k resistor. The test points can be used to connect the
user’s transducer to easily evaluate the pulser.

 2015 Microchip Technology Inc. DS50002375A-page 11

HV7351 Ultrasound Tx Beamformer Evaluation Board User’s Guide

VLL

DGND

V

PP

+3.3V

VPP

VDD

TX1

R8

Waveform

Generator

CPLD

+3.3V

OSC

JTAG

EXCLK

EN

CLK

IN

WAVE
FREQ
INVERT
ENA
CW

160 MHz

6

LRP

PGND

TP11

X1

330 pF

330 pF

PGND

R53

TP37

X8

TX8

HV

OUT

EXTRG

IN-System
PROM

VRP

+5.0V +5.0 to 12V

+3.0 to 70V

VPF

SPI &
Control
Logic

CW
INV
PWR
EN

V

RN

CW, SIZE, A [1:0]

SP1

TRIG

EN

TCK

AGND

Pattern
Registers

Delay
Registers

PreScale
Registers

VNN

-3.0 to -70V

VNF

LRN

V

RP

VRNVSS

-5.0V

PGND

SUB

V

PP

P

GND

P

GND

V

NN

P

GND

-5.0 to -12V

HV7351

1 of 8

Channels Shown

V

PF

V

NF

V

NN

GND

V

RN

V

RP

GND

Dummy
Load

2.5 k

Dummy

Load

2.5 k

VCC

FIGURE 1-1: Block Diagram.

1.3.1 Board Features

• Two CPLDs provided to program a wide variety of data patterns that can be

transmitted.

• Push-button selection of various Waveforms, Transmission Frequency, Waveform

Inversion, Mode (Brightness or Continuous Wave mode) and Enable (see

Ta bl e 2 - 3 in Chapter 2. “Installation and Operation”)

• LED indication of push button operations (see Tab le 2 - 4 in Chapter

2. “Installation and Operation”)

• Ability to bypass the crystal oscillator provided with an external clock source

• Numerous test points for probing of various input and output signals

1.3.2 HV7351 Ultrasound Tx Beamformer Evaluation Board Hardware

Components

The HV7351 Ultrasound Tx Beamformer Evaluation Board contains several
components:

• One HV7351 8-Channel ±70V, 3A Programmable Ultrasound Transmit

Beamformer.

• Two Xilinx Inc. XC9572XL_VQ44 CPLDs

• Two Xilinx Inc. XCF01SVO20C PROM

• One Fox

DS50002375A-page 12  2015 Microchip Technology Inc.

TABLE 1-1: TECHNICAL SPECIFICATIONS

Modes of Operation B-mode and CW-mode

Input Logic Level 3.3V

Transmission Frequency 1 MHz – 10 MHz

High Voltage Supply Range ±3V – ±70V

Load on Each Channel 330 pF||2.5 k

Electronics FXO-HC73-160 crystal oscillator running at 160 MHz

Parameter Value

1.4 WHAT THE HV7351 ULTRASOUND TX BEAMFORMER EVALUATION BOARD KIT INCLUDES

The HV7351 Ultrasound Tx Beamformer Evaluation Board Kit includes:

• HV7351 Ultrasound Tx Beamformer Evaluation Board (ADM00658)

• Important Information Sheet

FIGURE 1-2: HV7351 Ultrasound Tx Beamformer Evaluation Board Front View.

FIGURE 1-3: HV7351 Ultrasound Tx Beamformer Evaluation Board Back View.

 2015 Microchip Technology Inc. DS50002375A-page 13

HV7351 Ultrasound Tx Beamformer Evaluation Board User’s Guide

NOTES:

DS50002375A-page 14  2015 Microchip Technology Inc.

EVALUATION BOARD USER’S GUIDE

Chapter 2. Installation and Operation

2.1 GETTING STARTED

The HV7351 Ultrasound Tx Beamformer Evaluation Board is fully assembled and
tested. The board requires external voltage sources.

2.1.1 Additional Tools Required for Operation

• A DC power supply, a bench supply that can produce 3.3V, 5V, -5V, 12V, -12V,
70V and -70V

• An oscilloscope and/or a multi-meter to observe the waveforms and measure
electrical parameters

2.2 SETUP PROCEDURE

To operate the HV7351 Ultrasound Tx Beamformer Evaluation Board, the following
steps must be followed:

HV7351

ULTRASOUND TX BEAMFORMER

WARNING

Read the HV7351 Ultrasound Tx Beamformer Evaluation Board User’s Guide (this
document) fully before proceeding to board setup.

1. Connect the supplies correctly to the board as shown in Figure 2-1.

2. Set the voltages and current limits of the supply rails according to Ta bl e 2 - 1,

before connecting the power connector J4.

TABLE 2-1: POWER CONNECTOR DESCRIPTION

Pin Name Description

1 VCC +3.3V Logic voltage input for V

2 GND 0V, Ground

3 VDD +5.0V HV7351 Board positive V

4 VSS -5.0V HV7351 Board negative V

5 VRN -5.0V to -12V HV7351 Board negative regulator supply, 50 mA

6 VRP +5.0V to +12V HV7351 Board positive regulator supply, 50 mA

7 GND 0V, Ground

8 VNN -3.0V to -70V negative high-voltage supply, 10 mA to 50 mA (Note 1)

9 GND 0V, Ground

10 VPP +3.0V to +70V positive high-voltage supply, 10 mA to 50 mA (Note 1)

Note 1: The current limits given for V

program in which B/CW-mode transmission is limited to about 16 cycles.
If the user reprograms the CPLD for more CW cycles, the current limits
need to be similarly increased.

and CPLD, 200 mA

LL

supply, 50 mA

DD

supply, 50 mA

SS

and VNN are good for the supplied CPLD

PP

 2015 Microchip Technology Inc. DS50002375A-page 15

DS50002375A-page 16  2015 Microchip Technology Inc.

VLL

DGND

V

PP

+3.3V

VPP

VDD

TX1

R8

Waveform

Generator

CPLD

+3.3V

OSC

JTAG

EXCLK

EN

CLK

IN

WAVE
FREQ
INVERT
ENA
CW

160 MHz

6

LRP

PGND

TP11

X1

330 pF

330 pF

PGND

R53

TP37

X8

TX8

HV

OUT

EXTRG

IN-System

PROM

VRP

+5.0V +5.0 to 12V

+3.0 to 70V

VPF

SPI &

Control

Logic

CW
INV
PWR
EN

V

RN

CW, SIZE, A [1:0]

SP1

TRIG

EN

TCK

AGND

Pattern

Registers

Delay

Registers

PreScale
Registers

VNN

-3.0 to -70V

VNF

LRN

V

RP

VRNVSS

-5.0V

PGND

SUB

V

PP

P

GND

P

GND

V

NN

P

GND

-5.0 to -12V

HV7351

1 of 8

Channels Shown

V

PF

V

NF

V

NN

GND

V

RN

V

RP

GND

Dummy
Load

2.5 k

Dummy

Load

2.5 k

VCC

HV7351 Ultrasound Tx Beamformer Evaluation Board User’s Guide

FIGURE 2-1: Power Supply and Load Connection Diagram.

3. Connect the high-impedance probe(s) of the oscilloscope to the Tx output(s).

4. Power up the supplies according to the power-up sequence as indicated in

Ta bl e 2 - 2.

TABLE 2-2: SUPPLY POWER-UP SEQUENCE

Step Name Description

1 +VCC +3.3V positive logic supply voltage for HV7351 Board V

CPLD V

CC

LL

and

2 +VDD +5.0V positive power supply

3 -VSS -5.0V negative power supply

4 +VRP +5V to +12.0V positive CW power supply

5 -VRN -5V to -12.0V positive CW power supply

6 +VPP +3V to +70V positive high voltage supply

7 -VNN -3V to -70V positive high voltage supply

5. After the HV7351 Board has been successfully powered up by following the

power-up sequence, enable the board by pressing the ENA button.

6. Change the output waveform and transmit frequency by pressing the WAVE and

FREQ buttons, respectively. An overview of Push Button Operations is provided
in Ta bl e 2 - 3.

TABLE 2-3: PUSH BUTTON OPERATIONS

Button Description

WAVE Toggle select pulse waveforms

FREQ Toggle select B-mode demo frequency

INVERT Toggle select non-inverting or inverting waveform

CW Toggle select CW-mode or B-mode (Note 1)

ENA Toggle ON or OFF HV7351 Board enable signal EN

Note 1: In CW-mode, V

PP/VNN

voltages must be reduced to  ±8V

7. The output waveform can be inverted by pressing the INVERT button. Tab le 2 -4

lists all LED Indicators.

TABLE 2-4: LED INDICATORS

LED Description

CW CW-mode indicator

INVERT Inverting waveform output indicator

PWR V

3.3V and CPLD chip VCC power supply ON indicator

LL

ENA IC-enabled indicator. CPDL power-up default is OFF

8. The transmission mode can be toggled by pressing the CW button. In CW-mode,

the typical waveforms are 16-cycle 5 MHz. To prevent the HV7351 Board from
overheating, the following parameters are recommended when setting V

PP/VNN

voltages in CW-mode:

•+3VV

•-3V  V

 2015 Microchip Technology Inc. DS50002375A-page 17

PP

NN

-8V

+8V

HV7351 Ultrasound Tx Beamformer Evaluation Board User’s Guide

WARNING

Carefully double-check the voltage of every supply rail, current-limit value and
polarity individually to avoid board damage.
Take extreme care while connecting the supplies to the board since
connecting them incorrectly to the wrong pins could result in permanent
damage to the entire board.

2.3 EVALUATING THE HV7351 ULTRASOUND TX BEAMFORMER EVALUATION BOARD

The best way to evaluate the HV7351 Ultrasound Tx Beamformer Evaluation Board is
to explore the circuit and measure the voltages and currents with a Digital Voltage
Meter (DVM) while probing the board with an oscilloscope.

2.4 NORMAL OPERATION

The HV7351 Ultrasound Tx Beamformer Evaluation Board should be powered up with
multiple lab DC power supplies that feature current-limiting functions.

To meet the typical loading condition when using the high-impedance probe of an
oscilloscope, the on-board dummy load (330 pF||2.5 k) should be connected to the
high-voltage pulser output through the solder jumper. To evaluate different loading
conditions, the values of the RC may be changed within the current and power limits of
the device.

In order to drive the user’s piezoelectric transducers with a cable, the output load
impedance should be properly matched to avoid cable and transducer reflections.

A 70 to 75 k coaxial cable is recommended. The coaxial cable end should be
soldered to the TX1 - TX8 and GND directly with very short leads. If the user’s load is
being used, the on-board dummy load should be disconnected by cutting the small
shorting copper trace in between the 0k resistors (R8, R12, R29, R30, R10, R37, R52
and R53) and the eight resistor pads. They are shorted by factory default.

All on-board test points are designed to work with the high-impedance probe of an
oscilloscope. Some probes may have limited input voltage range. When using the
probe on these high-voltage test points, make sure that the V
exceed the probe limit. When using the high-impedance oscilloscope probe on the
on-board test points, it is important to have short ground leads to the circuit board
ground plane.

PP/VNN

voltages do not

DS50002375A-page 18  2015 Microchip Technology Inc.

HV7351

ULTRASOUND TX BEAMFORMER

EVALUATION BOARD USER’S GUIDE

Chapter 3. Printed Circuit Board Layout Techniques

The large thermal pad at the bottom of the HV7351 package is internally connected to
the IC’s substrate (V
externally on the PCB. The designer needs to pay attention to the connecting traces on
the outputs TX1 - TX8, specifically the high-voltage and high-speed traces. In
particular, controlled impedance to ground plane and more trace spacing needs to be
applied in such situations.

High-speed PCB trace design practices that are compatible with about
50 MHz to 100 MHz operating speeds are used for the HV7351 PCB layout. The
internal circuitry of the HV7351 can operate at rather high frequencies, the primary
speed limitation being the load capacitance.

Because of the high-speed and high-transient currents that result when driving
capacitive loads, the supply-voltage bypass capacitors should be as close to the pins
as possible. The GND pin should have low inductance feed-through via connections
that are soldered directly to a solid ground plane.

The device’s V
supplies and bypass capacitors pins must have a ceramic capacitor per pin and be
placed close to the pin. A ceramic capacitor of 1.0 µF may be used. Only the V
V

to GND capacitors need to be high-voltage type. The VPF to VPP and VNF to VNN

NN

capacitors can be low-voltage.

It is advisable to minimize the trace length to the ground plane and to insert a ferrite
bead in the power supply lead to the capacitor to prevent resonance within the power
supply lines. For applications that are sensitive to jitter and noise, and when using
multiple HV7351 ICs, another ferrite bead between each of the chip’s supply line should
be inserted.

To reduce inductance, special attention should be paid to minimizing trace lengths and
using sufficient trace width. Surface mount components are highly recommended.
Since the output impedance of the HV7351 high-voltage power stages is very low, in
some cases it may be desirable to add a small value resistor in series with the output
TX1 - TX8. This results in obtaining better waveform integrity at the load terminals after
long cables and will also reduce the output voltage slew rate at the terminals of a
capacitive load.

Special attention should be paid to the parasitic coupling from the outputs to the input
signal terminals of the HV7351. This feedback may cause oscillations or spurious
waveform shapes on the edges of signal transitions. Since the input operates with
signals down to 3.3V, even small coupling voltages may cause problems. The use of a
solid ground plane and good power and signal layout practices will prevent this
problem.

It should also be ensured that the circulating ground return current from the capacitive
load cannot react with common inductance to create noise voltages in the input
circuitry.

, AVDD, DVDD, PVDD, PVSS, VPP, VNN, VPF, VNF and VRN voltage

LL

). This thermal pad should be connected to 0V or GND

SUB

PP

and

 2015 Microchip Technology Inc. DS50002375A-page 19

HV7351 Ultrasound Tx Beamformer Evaluation Board User’s Guide

NOTES:

DS50002375A-page 20  2015 Microchip Technology Inc.

Appendix A. Schematic and Layouts

A.1 INTRODUCTION

This appendix contains the following schematics and layouts for the HV7351
Ultrasound Tx Beamformer Evaluation Board:

• Board – Schematic

• Board – Top Layer

• Board – Top Silk Layer

• Board – Middle Layer

• Board – Bottom Layer

• Board – Bottom Silk Layer

• Board – All Layers, and Dimension

HV7351

ULTRASOUND TX BEAMFORMER

EVALUATION BOARD USER’S GUIDE

 2015 Microchip Technology Inc. DS50002375A-page 21

36
40
32
29
28
33

8
38
42

1
41
34

B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11

TDO
TCK
TDI
TMS

TX1

OERST

EN

SDI
SDO
SCK
CS
TRIG

LED1 LED2 PWR

LED1

LED2

PWR

EN

CLKOUT

CLKOUT

D0

FCLK

CF

CE

CEO

D0
FCLK
CF
OERST
CE
CEO

VCC

VCC

VCC

VCC

VCC

VCC

VDD

VPP

VNN

VSS

VRP

VRN

VCC

J6

JTAG

V

CC

= +3.3V

V

DD/VSS

= +/-5V

V

RP/VRN

= +/-5V to +/-10V

V

PP/VNN

= +/-5 to +/-70V

R1
1k

R41

4.99k

NC9
NC8
NC7

374439433130273526

15

CC
DD
EE
FF
GG
HH
II
JJ
KK
LL
MM
NN

36
40
32
29
28
33

8
38
42

1
41
34

U3

XC9572XL_VQ44

TP44

TP45

TP43

C12

0.1

D4

YLW

TP36

C29

0.1

TP5

R42

4.99k

TP2

TP48

R14
1k

1

2

3

J1

EXCLK

C43
1μF

TP46

18

19

AVDD

DVDD

DVDD

PVDD

PVDD

PVDD

PVDD

VRP

1501079225249

9

16

3

6

20

2

17

7

8

GND

DGND

DGND

DGND

DGND

8111514358

5

13

PGND

PGND

PGND

PGND

PGND

PGND

PGND

PGND

23

78

53

48

46

77

55

24

PVSS

PVSS

PVSS

PVSS

254754

76

SIZE

INV

CW

A0

A1

EN

DIN1

DOUT1

DIN2

DOUT2

SCK

CS1

CS2

TRIG

TCK

TCK
NC
NC

4

12

TX1

TX2

TX3

TX4

TX5

TX6

TX7

TX8

30

33

36

39

62

65

68

71

VLL

15

VNF

VNF

VNF

VNF

VNN

VNN

VNN

VNN

VNN

VNN

VNN

VNN

VNN

VNN

614035346766296041

72

VPF

VPF

VPF

VPF

VPP

VPP

VPP

VPP

VPP

VPP

VPP

VPP

VPP

VPP

14

VRN

21

80

U1

HV7351

WAV

FRE

INVERTCWENA

23567

GND

4

TDI1

9

TMS

10

TCK

11

GND

17

TDO1

24

GND

25

NC11 30

NC12

31

VCC

VCC

VCC

352615

EXTRG

39

CLKIN

43

NC10 27

CLKOUT

44

SIZE

INV

CW

A0

A1

EN

U2

XC9572XL_VQ44

12345

6

R6
1k

TP42

C40

0.1

TP27

TP25

EN

1

GND2OUT

3

VCC

4

X1

FXO-HC73-160

1

2

J2

EX = 0

TP3

TP16

TP30

D0

CLK

CF

OE_RST

CE

CEO

1
3
7
8
10
13

NC
NC
NC
NC
NC
NC

2

9
12
15
14
16

TMS

TDI3

TDO3

TCK

5417

6

GND

11

VCCJ

VCCO

VVVINT

201918

U4

XCF01SVO20C

TP41

TP47

1

2

3

MH4MH3MH2 MH1

R43

4.99k

C41

0.1

VCC VRPVSS VNNVRN VPPVDD

123456789

10

J4

HEADER 10

R36
10

R33
10

R38
1

R35
1

R39
1

R40
1

R31
1

VCC

VNNVDD VPPVRP VRN VDD

VSS

VCC

VSS

VNN

D17

6

1

D15

B1100-13

D21B

BAT54DW-7

6

1

6

1

4

3

4

3

4

3

1

2

211

2

D16

B1100-13

D17

B1100-13

D21A

BAT54DW-7

D20B

BAT54DW-7

D20A

BAT54DW-7

D19B

BAT54DW-7

D19A

BAT54DW-7

TP28

R9

2.55k
1W

R8

C4
330p
250V

TP17

TP11

R13

2.55k
1W

R12

C25
330p
250V

TP22

TP19

R27

2.55k
1W

R29

C22
330p
250V

TP31

TP23

R28

2.55k
1W

R30

C32
330p
250V

TP34

TP32

R11

2.55k
1W

R10

C13
330p
250V

TP21

TP13

R54

2.55k
1W

R37

C24
330p
250V

TP39

TP26

R32

2.55k
1W

R52

C23
330p
250V

TP33

TP24

R34

2.55k
1W

R53

C39
330p
250V

TP38

TP37

TX2

TX3

TX4

TX5

TX6

TX7

TX8

C44

1μF

C36
1μF

C42
1μF

C55
1μF

27
74

C27

1μF

100V

C46
1μF

100V

C33
1μF

100V

C47
1μF

100V

C45

1μF

C34

1μF

C28
1μF

C26
1μF

TP40

594273

28

22
16
23
14
13

Z
Y
X
V
U

C20

0.1

R15

1k

TP1

C21

0.1

C53
1μF

C14
1μF

C17
1μF

C19
1μF

C52

1μF

TP29

C54
1μF

C50

1μF

C51

1μF

C15
1μFC51μF

C9

0.1

C10

0.1

C11

0.1

C16

1μF

100V

C18

1μF

100V

C48
1μF

100V

C56
1μF

100V

C49
1μF

100V

383731706963326444

57

755626

45

TP35

R5
1kR41kR31k

D1

YLWD2RED

D3

GRN

1

2

1

2

1

2

1

2

C1

0.1

J3

EXTRG

18
20
19

21

12

22
16
23
14
13

OERST

EN

SDI

SDO

SCK

CS

TRIG

B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11

C
D
E
F
G
H
I
J
K
L
M
N

EN

SDI

SDO

SCK

CS

TRIG

TP18

TP14

TP10

TP15

TP8

TP9

TP7

TP12

TP6

TP4

4

17

25

23567109

24

11

GND

GND

GNDD0FCLKCFCE

CEO

TMS

TDI2

TDO2

TCK

C6

0.1C70.1C80.1

R2
50

R7
50

BB

AA

EXTRG

CLKIN

LED1

LED2

PWR

VCC

VCC

VCC

VCC

TP20

R26
200

C30

0.1

R25
200

R24
200

R23
200

R22
200

C31

0.1

C37

0.1

C38

0.1

C35

0.1

SW1

R17

33k

SW5

R21

33k

SW2

R18

33k

SW4

R20

33k

SW3

R19

33k

37

18

20

19

21

12

 2015 Microchip Technology Inc. DS50002375A-page 22

A.2 BOARD – SCHEMATIC

A.3 BOARD – TOP LAYER

A.4 BOARD – TOP SILK LAYER

 2015 Microchip Technology Inc. DS50002375A-page 23

HV7351 Ultrasound Tx Beamformer Evaluation Board User’s Guide

A.5 BOARD – MIDDLE LAYER

A.6 BOARD – BOTTOM LAYER

DS50002375A-page 24  2015 Microchip Technology Inc.

A.7 BOARD – BOTTOM SILK LAYER

A.8 BOARD – ALL LAYERS, AND DIMENSION

 2015 Microchip Technology Inc. DS50002375A-page 25

HV7351 Ultrasound Tx Beamformer Evaluation Board User’s Guide

NOTES:

DS50002375A-page 26  2015 Microchip Technology Inc.

HV7351

ULTRASOUND TX BEAMFORMER

EVALUATION BOARD USER’S GUIDE

Appendix B. Bill of Materials (BOM)

TABLE B-1: BILL OF MATERIALS (BOM)

Qty Reference Description Manufacturer Part Number

18 C1, 6-12, 20, 21,

29-31, 35, 37, 38,
40, 41

8 C4,13, 22-25, 32, 39 330 pF, 200V X7R

19 C5, 14, 15, 17, 19,

26, 28, 34, 36,
42-45, 50-55

9 C16, 18, 27, 33,

46-49, 56

2 D1, D4 LED Thin 585 nm, Yellow Diff. Lumex

1 D2 LED Thin 635 nm, Red Diff. Lumex Inc. SML-LXT0805IW-TR

1 D3 LED Thin 565 nm, Green Diff. Lumex Inc. SML-LXT0805GW-TR

3 D15, D16, D17 100V 1A Schottky Diode Diodes

3 D19, D20, D21 30V Dual Schottky Diode Diodes Incorporated BAT54DW-7

2 J1, J3 Connector Jack End Launch

1 J2 Connector Header 2 POS, 100

1 J4 Connector Header 10 POS,

1 J6 Connector Header 6 POS, 100

4 MH1, MH2, MH3,

MH4

1 PCB HV7351 Ultrasound Tx

7 R1, R3, R4, R5, R6,

R14, R15

2 R2, R7 49.9, 1/16W, 1% resistor Panasonic

8 R8, R10, R12, R29,

R30, R37, R52, R53

8 R9, R11, R13, R27,

R28, R32, R34, R54

5 R17, R18, R19, R20,

R21

5 R22, R23, R24, R25,

R26

Note 1: The components listed in this Bill of Materials are representative of the PCB assembly. The released

BOM used in manufacturing uses all RoHS-compliant components.

0.22 µF, 10% 16V X7R
ceramic capacitor

ceramic capacitor

1 µF, 16V X7R
ceramic capacitor

1 µF, 20% 100V X7R
ceramic capacitor

PCB Gold SM

Vert. Gol d

100 Vert. Gold

Vert. Gol d

Screw Machine Phillips
4-40X1/4

Beamformer Evaluation Board
– Printed Circuit Board

1k, 1/16W, 1% resistor ROHM Semiconductor MCR03EZP5J10

Solder Gap (short) NA NA

2.55 k, 1W, 1% resistor Panasonic - ECG ERJ-1TNF2551U

33.2 k, 1/16W, 1% resistor Panasonic - ECG ERJ-3EKF3322V

200, 1/16W, 1% resistor ROHM Semiconductor MCR03FZPEJ201

TDK Corporation C1608X7R1C224K

TDK Corporation CGJ3E3C0G2D331J080AA

TDK Corporation C1608X7R1C105M

Taiyo Yuden Co., Ltd. HMK325B7105KN-T

®

Inc. SML-LXT0805YW-TR

®

Incorporated B1100-13

Cinch Connectivity
Solutions

®

Molex

TE Connectivity Ltd. 1-640454-0

Molex 22-28-4063

Building Fasteners PMS 440 0025 PH

— 04-10397

®

- ECG ERJ-3EKF49R9V

142-0711-821

22-28-4023

 2015 Microchip Technology Inc. DS50002375A-page 27

HV7351 Ultrasound Tx Beamformer Evaluation Board User’s Guide

TABLE B-1: BILL OF MATERIALS (BOM) (CONTINUED)

Qty Reference Description Manufacturer Part Number

5 R31, R35, R38, R39,

R40

2 R33,3R6 10, 1/10W, 1% resistor Stackpole Electronics,

3 R41, R42, R43 4.99 k, 1/16W, 1% resistor Panasonic - ECG ERJ-3EKF4991V

1, 1/10W, 1% resistor Stackpole Electronics,

Inc.

Inc.

RNCP0603FTD1R00

RMCF0603JT10R0

5 SW1-SW5 Switch LT 4.7mmX3.5mm

100 GF SMD

2 TP20, TP28 Test Point PC Multi-Purpose

Block

1 U1 IC HV7351K6-G 8-Ch ±70V,

3A Beamformer

2 U2, U3 IC CPLD 72 MC cell C-Temp

44-VQFP

1 U4 IC Prom IN Syst. Prg. 3.3V

20TSSOP

1 X1 160 MHz Clock Oscillator, 3.3V

SMD

4 for MH1-4 Standoff Hex 4-40THR 0.25”L

Alum.

1 for J2 Shunt, ECON, PHBR 5 AU,

Black

Note 1: The components listed in this Bill of Materials are representative of the PCB assembly. The released

BOM used in manufacturing uses all RoHS-compliant components.

Panasonic - ECG EVQ-P2002M

Keystone Electronics
Corp.

Microchip Technology
Inc.

Xilinx Inc. XC9572XL-5VQ44C

Xilinx Inc. XCF01SVOG20C

Fox Electronics FXO-HV73x-160

Keystone Electronics
Corp.

TE Connectivity Ltd 382811-8

5011

HV7351K6-G

1891

DS50002375A-page 28  2015 Microchip Technology Inc.

ULTRASOUND TX BEAMFORMER

EVALUATION BOARD USER’S GUIDE

Appendix C. Plots and Waveforms

C.1 HV7351 TYPICAL WAVEFORMS

C.1.1 Four Outputs of Eight Channels, 5 MHz ±70V with Different

Beamforming Delays, with 330 pF||2.5 k Load

HV7351

C.1.2 Tx Output at 10 MHz ±70V with 330 pF||2.5 k Load

 2015 Microchip Technology Inc. DS50002375A-page 29

HV7351 Ultrasound Tx Beamformer Evaluation Board User’s Guide

C.1.3 Tx RTZ Output at ±70V with 330 pF|| 2.5k Load

C.1.4 RTZ Output t

Time at 0 to +70V with 330 pF|| 2.5k Load

r/tf

DS50002375A-page 30  2015 Microchip Technology Inc.

Plots and Waveforms

C.1.5 RTZ Output tr/tf Time at 0 to -70V with 330 pF||2.5 k Load

C.1.6 5 MHz t

Time at ±50V Output with 330 pF||2.5 k Load

r/tf

 2015 Microchip Technology Inc. DS50002375A-page 31

HV7351 Ultrasound Tx Beamformer Evaluation Board User’s Guide

C.1.7 ±50V 5 MHz 8-Cycle Output & HD2 with 330 pF||2.5 k Load

C.1.8 5 MHz ±75V B-Mode Waveform and Flip Waveform

DS50002375A-page 32  2015 Microchip Technology Inc.

Plots and Waveforms

C.1.9 Four Outputs of Eight Channels, 5 MHz ±5.0V CW-Mode Output

Waveform

 2015 Microchip Technology Inc. DS50002375A-page 33

Worldwide Sales and Service

AMERICAS

Corporate Office

2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: [phone]
Fax: [phone]
Technical Support:

http://www.microchip.com/
support

Web Address:

www.microchip.com

Atlanta

Duluth, GA
Tel: [phone]
Fax: [phone]

Austin, TX

Tel: [phone]

Boston

Westborough, MA
Tel: [phone]
Fax: [phone]

Chicago

Itasca, IL
Tel: [phone]
Fax: [phone]

Cleveland

Independence, OH
Tel: [phone]
Fax: [phone]

Dallas

Addison, TX
Tel: [phone]
Fax: [phone]

Detroit

Novi, MI
Tel: [phone]

Houston, TX

Tel: [phone]

Indianapolis

Noblesville, IN
Tel: [phone]
Fax: [phone]

Los Angeles

Mission Viejo, CA
Tel: [phone]
Fax: [phone]

New York, NY

Tel: [phone]

San Jose, CA

Tel: [phone]

Canada - Toronto

Tel: [phone]
Fax: [phone]

ASIA/PACIFIC

Asia Pacific Office

Suites 3707-14, 37th Floor
Tower 6, The Gateway
Harbour City, Kowloon

Hong Kong

Tel: [phone]
Fax: [phone]

Australia - Sydney

Tel: [phone]
Fax: [phone]

China - Beijing

Tel: [phone]
Fax: [phone]

China - Chengdu

Tel: [phone]
Fax: [phone]

China - Chongqing

Tel: [phone]
Fax: [phone]

China - Dongguan

Tel: [phone]

China - Hangzhou

Tel: [phone]
Fax: [phone]

China - Hong Kong SAR

Tel: [phone]
Fax: [phone]

China - Nanjing

Tel: [phone]
Fax: [phone]

China - Qingdao

Tel: [phone]
Fax: [phone]

China - Shanghai

Tel: [phone]
Fax: [phone]

China - Shenyang

Tel: [phone]
Fax: [phone]

China - Shenzhen

Tel: [phone]
Fax: [phone]

China - Wuhan

Tel: [phone]
Fax: [phone]

China - Xian

Tel: [phone]
Fax: [phone]

ASIA/PACIFIC

China - Xiamen

Tel: [phone]
Fax: [phone]

China - Zhuhai

Tel: [phone]
Fax: [phone]

India - Bangalore

Tel: [phone]
Fax: [phone]

India - New Delhi

Tel: [phone]
Fax: [phone]

India - Pune

Tel: [phone]

Japan - Osaka

Tel: [phone]
Fax: [phone]

Japan - Tokyo

Tel: [phone]
Fax: [phone]

Korea - Daegu

Tel: [phone]
Fax: [phone]

Korea - Seoul

Tel: [phone]
Fax: [phone] or
82-2-558-5934

Malaysia - Kuala Lumpur

Tel: [phone]
Fax: [phone]

Malaysia - Penang

Tel: [phone]
Fax: [phone]

Philippines - Manila

Tel: [phone]
Fax: [phone]

Singapore

Tel: [phone]
Fax: [phone]

Taiwan - Hsin Chu

Tel: [phone]
Fax: [phone]

Taiwan - Kaohsiung

Tel: [phone]

Taiwan - Taipei

Tel: [phone]
Fax: [phone]

Thailand - Bangkok

Tel: [phone]
Fax: [phone]

EUROPE

Austria - Wels

Tel: [phone]
Fax: [phone]

Denmark - Copenhagen

Tel: [phone]
Fax: [phone]

France - Paris

Tel: [phone]
Fax: [phone]

Germany - Dusseldorf

Tel: [phone]

Germany - Munich

Tel: [phone]
Fax: [phone]

Germany - Pforzheim

Tel: [phone]

Italy - Milan

Tel: [phone]
Fax: [phone]

Italy - Venice

Tel: [phone]

Netherlands - Drunen

Tel: [phone]
Fax: [phone]

Poland - Warsaw

Tel: [phone]

Spain - Madrid

Tel: [phone]
Fax: [phone]

Sweden - Stockholm

Tel: [phone]

UK - Wokingham

Tel: [phone]
Fax: [phone]

01/27/15

DS50002375A-page 34  2015 Microchip Technology Inc.

Mouser Electronics

Authorized Distributor

Click to View Pricing, Inventory, Delivery & Lifecycle Information:

Microchip:
ADM00658