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2017-2018 Microchip Technology Inc. DS50002582B
HV2903
Analog Switch
Evaluation Board
User’s Guide
DS50002582B-page 2 2017-2018 Microchip Technology Inc.
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© 2018, Microchip Technology Incorporated, All Rights Reserved.
ISBN: 978-1-5224-3486-3
HV2903
ANALOG SWITCH
EVALUATION BOARD
USER’S GUIDE
2017-2018 Microchip Technology Inc. DS50002582B-page 3
Table of Contents
Preface ........................................................................................................................... 5
Introduction............................................................................................................ 5
Document Layout .................................................................................................. 5
Conventions Used in this Guide ............................................................................ 6
Recommended Reading........................................................................................ 7
The Microchip Website.......................................................................................... 7
Customer Support ................................................................................................. 7
Document Revision History ................................................................................... 7
Chapter 1. Product Overview ........................................................................................ 9
1.1 Introduction ..................................................................................................... 9
1.2 HV2903 Integrated Circuit – Description ........................................................ 9
1.3 HV2903 Analog Switch Evaluation Board – Features .................................... 9
1.4 HV2903 Analog Switch Evaluation Board – Functional Description ............. 10
1.5 What does the HV2903 Analog Switch Evaluation Board Kit Include? ........ 11
Chapter 2. Installation and Operation ........................................................................ 13
2.1 Getting Started ............................................................................................. 13
2.2 HV MUX GUI Installation .............................................................................. 14
2.3 Setup Procedure .......................................................................................... 17
2.4 Interface Connections .................................................................................. 19
2.5 Testing the HV2903 Analog Switch Evaluation Board ................................. 20
2.6 HV MUX Controller and GUI Manual ............................................................ 21
2.7 Generation of Pulser Output at SW8A of HV MUX ...................................... 24
Chapter 3. PCB Design and Layout Notes................................................................. 25
3.1 PCB Layout Techniques for HV2903 ........................................................... 25
Appendix A. Schematic and Layouts ......................................................................... 27
A.1 Introduction .................................................................................................. 27
Appendix B. Bill of Materials....................................................................................... 47
B.1 HV2903 Analog Switch Evaluation Board .................................................... 47
B.2 HV MUX Controller Board ............................................................................ 49
Appendix C. Demo Board Waveforms ....................................................................... 53
C.1 Board Typical Waveforms ............................................................................ 53
Worldwide Sales and Service .................................................................................... 54
HV2903 Analog Switch Evaluation Board User’s Guide
DS50002582B-page 4 2017-2018 Microchip Technology Inc.
NOTES:
HV2903
ANALOG SWITCH
EVALUATION BOARD
USER’S GUIDE
2017-2018 Microchip Technology Inc. DS50002582B-page 5
Preface
INTRODUCTION
This chapter contains general information that will be useful to know before using the
HV2903 Analog Switch Evaluation Board. Items discussed in this chapter include:
•Document Layout
•Conventions Used in this Guide
•Recommended Reading
•The Microchip Website
•Customer Support
•Document Revision History
DOCUMENT LAYOUT
This document describes how to use the HV2903 Analog Switch Evaluation Board as
a development tool to evaluate the HV2903 No High-Voltage Bias, Low Harmonic
Distortion, 32-Channel, High-Voltage Analog Switch IC. The user’s guide layout is as
follows:
•Chapter 1. “Product Overview” – Important information about the HV2903
Analog Switch Evaluation Board.
•Chapter 2. “Installation and Operation” – This chapter includes a detailed
description of each function of the demonstration board and instructions for how to
begin using the HV2903 Analog Switch Evaluation Board.
•Chapter 3. “PCB Design and Layout Notes” – This chapter explains important
points of the PCB design and layout of HV2903 Analog Switch Evaluation Board.
•Appendix A. “Schematic and Layouts” – Shows the schematic and PCB layout
diagrams for the HV2903 Analog Switch Evaluation Board and the HV MUX
Controller Board.
•Appendix B. “Bill of Materials” – Lists the parts used to build the HV2903
Analog Switch Evaluation Board and the HV MUX Controller Board.
•Appendix C. “Demo Board Waveforms” – Describes the various demo
waveforms for the HV2903 Analog Switch Evaluation Board.
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 website
(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 www.microchip.com
online help. Select the Help menu, and then Topics to open a list of available online help files.
HV2903 Analog Switch Evaluation Board User’s Guide
DS50002582B-page 6 2017-2018 Microchip Technology Inc.
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
“Save project before build”
Underlined, italic text with right
angle bracket
A menu path File>Save
Bold characters A dialog button Click OK
A tab Click the Power tab
N‘Rnnnn A number in verilog format,
where N is the total number of
digits, R is the radix and n is a
digit.
4‘b0010, 2‘hF1
Text in angle brackets < > A key on the keyboard Press <Enter>, <F1>
Courier New font:
Plain Courier New Sample source code #define START
Filenames autoexec.bat
File paths c:\mcc18\h
Keywords _asm, _endasm, static
Command-line options -Opa+, -Opa-
Bit values 0, 1
Constants 0xFF, ‘A’
Italic Courier New A variable argument file.o, where file can be
any valid filename
Square brackets [ ] Optional arguments mcc18 [options] file
[options]
Curly brackets and pipe
character: { | }
Choice of mutually exclusive
arguments; an OR selection
errorlevel {0|1}
Ellipses... Replaces repeated text var_name [,
var_name...]
Represents code supplied by
user
void main (void)
{ ...
}
Preface
2017-2018 Microchip Technology Inc. DS50002582B-page 7
RECOMMENDED READING
This user’s guide describes how to use the HV2903 Analog Switch Evaluation Board.
Another useful document is listed below. The following Microchip document is available
and recommended as a supplemental reference resource.
• HV2903 Data Sheet – “HV2803/HV2903/HV2904 – No High-Voltage Bias, Low
Harmonic Distortion, 32-Channel, High-Voltage Analog Switch”
(DS20005721)
THE MICROCHIP WEBSITE
Microchip provides online support via our website at www.microchip.com. This website
is used as a means to make files and information easily available to customers. The
website 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
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 website at: http://support.microchip.com.
DOCUMENT REVISION HISTORY
Revision B (September 2018)
• Grammar corrections
• Improved page numbering
Revision A (December 2017)
• Initial Release of this Document
HV2903 Analog Switch Evaluation Board User’s Guide
DS50002582B-page 8 2017-2018 Microchip Technology Inc.
NOTES:
HV2903
ANALOG SWITCH
EVALUATION BOARD
USER’S GUIDE
2017-2018 Microchip Technology Inc. DS50002582B-page 9
Chapter 1. Product Overview
1.1 INTRODUCTION
HV2903 Analog Switch Evaluation Board (ADM00795) works with HV MUX Controller
Board (ADM00825) to provide 32-channel, high-voltage (HV) analog switches, without
HV supplies demonstration, including basic switch ON/OFF operation and 2:1 MUX
operation, with two built-in MD1822 and TC6320 pulser circuits.
1.2 HV2903 INTEGRATED CIRCUIT – DESCRIPTION
The HV2903 device is a no HV bias, low-harmonic distortion, low-charge injection, con-
sisting of 32-channel, HV analog switches. It is designed for use in applications requir-
ing high-voltage switching controlled by low-voltage control signals, such as medical
ultrasound imaging, driving piezoelectric transducers and printers. The typical 10 on
resistance analog switch can pass the analog pulse signal up to ±3A of current at
±100V, without high-voltage supplies such as ±100V. It requires only ±6V or ±5V for the
ON/OFF switch operation and 3.3V for logic operation.
The HV2903 device has two modes of operation: Individual Switching mode and Bank
Switching mode. The user can select the mode with the MODE pin logic input. The 32
analog switches can be controlled individually through a digital interface when the
MODE input is high (Individual Switching mode). The digital interface clock operates up
to 66 MHz. All 16 even switches and all 16 odd switches can be controlled together
through simple 2-input logic when the MODE input is low (Bank Switching mode).
The Standby mode is used to decrease power consumption during idle state. When
STBY logic input is low, the HV2903 device operates in Standby mode and consumes
very low current. When STBY logic input is high, the device operates normally.
1.3 HV2903 ANALOG SWITCH EVALUATION BOARD – FEATURES
• One HV2903 No High-voltage Bias, Low Harmonic Distortion, 32-Channel,
High-Voltage Analog Switch
• Designed to work with Microchip HV MUX Controller Board (ADM00825)
• Two 2:1 MUX with built-in MD1822 and TC6320 pulsers
• 5 MHz 3-level voltage pulse waveform outputs
• On-board 330 pF//2.5 k dummy load per SW8A, SW9A, SW24A, SW25A
• Mode selection and Switch ON/OFF control through PC GUI and controller board
• Pulser ON/OFF and time domain control through PC GUI and controller board
HV2903 Analog Switch Evaluation Board User’s Guide
DS50002582B-page 10 2017-2018 Microchip Technology Inc.
1.4 HV2903 ANALOG SWITCH EVALUATION BOARD – FUNCTIONAL
DESCRIPTION
The HV2903 Analog Switch Evaluation Board can control the HV2903 operation and
built-in pulsers that are connected to two 2:1 MUX switches for demonstration. Four
switch outputs of two 2:1 MUX have SMA connectors and the user can connect four
transducer elements. The other side of the 2:1 MUX is connected to two built-in
MD1822 and TC6320 pulsers. The HV2903 Analog Switch Evaluation Board can drive
four transducer elements with 5 MHz, ±100V pulse signals.
The evaluation board features one HV2903/AHA 12x12x1.2 mm 132-Lead TFBGA
packaged integrated circuit, two MD1822K6-G 3x3x1 mm 16-Lead QFN packaged
integrated circuits, and four TC6320K6-G 4x4x1 mm 8-Lead DFN packaged NMOS
and PMOS pair integrated circuits.
The HV2903 Analog Switch Evaluation Board uses two high-speed 20-signal pair
carrying-capable, right-angle backplane connectors, which are designed to work with
the Microchip HV MUX Controller Board (ADM00825) as a control signal source.
The HV MUX Controller Board has an FPGA that generates pulser waveform and
logic control signals, and a USB bridge IC that connects the control board to a PC. By
means of a Microsoft® Windows® driver and GUI, the user can control the HV2903
device and two built-in pulsers.
Four switch terminals, consisting of two MUX configurations on the PCB, have SMA
connectors to which the user can connect loads. Jumpers close to SMA connectors
are for connecting the on-board dummy R-C load (330 pF//2.5 k) optionally to the
pulser output.
TABLE 1-1: HV2903 ANALOG SWITCH EVALUATION BOARD TECHNICAL KIT
WARNING
Risk warning of electrical shock. This board uses multiple hazardous high
voltages. Disconnect all high-voltage supplies before working on it. Electrical
safety precautions must be taken when working on or using this board.
Parameter Value
HV2903 Modes of Operation Individual Switching, Bank Switching and Standby modes
Pulser Frequency 5 MHz
Number of Pulses in the Train 1 to 90
TOFF Time Between Pulse Trains 5 to 30 ms
Pulse Peak Voltage and Current 0 to ±100V and ±3A typical
Interface of FPGA Control Signals
and USB PC-GUI Software
J1 and J2 Connect to ADM00825 Controller Interface
Board
Pulser R-C Test Load and User’s Transducer Interface Built-in, 330 pF//2.5 k per Channel with Jumper and
50 SMA
PCB Board Dimension 115x110 mm (4.5x4.3 in.)
Product Overview
2017-2018 Microchip Technology Inc. DS50002582B-page 11
FIGURE 1-1: HV2903 ANALOG SWITCH EVALUATION BOARD SIMPLIFIED BLOCK DIAGRAM
1.5 WHAT DOES THE HV2903 ANALOG SWITCH EVALUATION BOARD KIT
INCLUDE?
The HV2903 Analog Switch Evaluation Board includes:
• HV2903 Analog Switch Evaluation Board (ADM00795)
• Important Information Sheet
HV2903
CH1 Pulser
MD1822 + TC6320
SW9A
SW25A
SWA
SW24A
330 pF2.5k7
SW9B
330 pF2.5k7
SW8B
330 pF2.5k7
SW24B
330 pF2.5k7
SW25B
CH2 Pulser
MD1822 + TC6320
FPGA
PC
+
GUI
HV2903 Analog Switch Evaluation Board User’s Guide
DS50002582B-page 12 2017-2018 Microchip Technology Inc.
NOTES:
HV2903
ANALOG SWITCH
EVALUATION BOARD
USER’S GUIDE
2017-2018 Microchip Technology Inc. DS50002582B-page 13
Chapter 2. Installation and Operation
2.1 GETTING STARTED
The HV2903 Analog Switch Evaluation Board is fully assembled and tested. The board
requires six power supply voltage rails of +3.3V, +10V, ±6.0V and ±100V.
2.1.1 Additional Tools Required for Operation
1. An oscilloscope with minimum 500 MHz bandwidth and two high-impedance
probes.
2. A Microchip HV MUX Controller (ADM00825).
3. A Microsoft® Windows® 7 PC that has the HV MUX Controller GUI software
installed and running:
- Connect J1 and J2 to the HV MUX Controller
- Connect the HV MUX Controller via USB to the Windows 7 PC
WARNING
Make sure that the grounds of the power supply sources are correctly connected to the
same ground as the testing oscilloscope ground.
HV2903 Analog Switch Evaluation Board User’s Guide
DS50002582B-page 14 2017-2018 Microchip Technology Inc.
2.2 HV MUX GUI INSTALLATION
The HV MUX GUI software installer can be downloaded from the Microchip website at
www.mircochip.com. Search for the evaluation board on the website by part number:
ADM000795.
1. Open the HVMUXGUI-v1.0.0-windows-installer.exe.
2. Initiate the HV MUX GUI software installer by launching the Application Install
dialog box.
3. Click Next to start the installation.
FIGURE 2-1: HV MUX GUI – APPLICATION INSTALL DIALOG BOX
Installation and Operation
2017-2018 Microchip Technology Inc. DS50002582B-page 15
4. Read the License Agreement and accept by checking the box corresponding to
“I accept the agreement”, then click Next to proceed with the installation.
FIGURE 2-2: HV MUX GUI – LICENSE AGREEMENT DIALOG BOX
5. On the Installation Directory dialog box, browse for the desired location or click
Next to install in the default location.
FIGURE 2-3: HV MUX GUI – INSTALLATION DIRECTORY DIALOG BOX
HV2903 Analog Switch Evaluation Board User’s Guide
DS50002582B-page 16 2017-2018 Microchip Technology Inc.
6. Once the installation path is chosen, the software is ready to install. Click Next.
FIGURE 2-4: HV MUX GUI – READY TO INSTALL DIALOG BOX
7. The Installation Status window appears, showing the installation progress.
8. After the installation has completed, click Next to continue.
FIGURE 2-5: HV MUX GUI – INSTALLATION STATUS DIALOG BOX
Installation and Operation
2017-2018 Microchip Technology Inc. DS50002582B-page 17
9. Once the Installation Complete dialog box appears, click the Finish button to exit
the installer.
FIGURE 2-6: HV MUX GUI – INSTALLATION COMPLETE DIALOG BOX
2.3 SETUP PROCEDURE
To operate the HV2903 Analog Switch Evaluation Board, the following steps must be
completed:
1. Attach to the HV MUX Controller (ADM00825) with connectors J1 and J2.
2. Connect all jumpers on J5, J6, J7 and J11 for the on-board R-C load.
3. Connect all power supplies to the voltage supply input connectors J3 and J4, as
indicated in Table 2-1 by observing the polarity.
4. Connect a USB cable from the Controller Board to the PC.
5. Connect +12V/1A power to the Controller Board and turn on the board.
6. Turn on the VSS first and then turn on the VDD.
7. Turn on the VLL.
8. Turn on the VGP and VPP/VNN.
9. Run the HV MUX GUI software in the PC.
10. Click the Initialize HV MUX Controller button in the GUI; the Status window in
the bottom displays an “initialization complete” message.
11. Unselect the STBY check box to set HV2903 in normal operation and choose the
Switching mode by selecting/unselecting the MODE check box.
WARNING
Observe the polarity of each power supply rail and set the voltage and current limit
carefully.
HV2903 Analog Switch Evaluation Board User’s Guide
DS50002582B-page 18 2017-2018 Microchip Technology Inc.
12. Click the Set HV MUX button. All digital control signals are applied to HV MUX.
13. Set the number of pulses and TOFF time of the pulser.
14. Select CH1 or CH2 to set pulser ch1 or pulser ch2.
15. Click the Start button for the selected pulser to start generating pulse trains.
16. Click the Stop button for the selected pulser to stop generating pulse trains.
TABLE 2-1: POWER SUPPLY VOLTAGES AND CURRENT-LIMIT SETTINGS
FIGURE 2-7: HV2903 ANALOG SWITCH EVALUATION BOARD –
FRONT VIEW
Terminal Rail Name Voltage Average Current Limit
J3-1 VDD +6V +20 mA
J3-2 GND 0V —
J3-3 VSS -6V -20 mA
J4-1 VLL +3.3V +150 mA
J4-2 GND 0V —
J4-3 VGP +5 to +11.5V +10 mA
J4-4 VPP +100V +5 mA
J4-5 VNN -100V -5 mA
Installation and Operation
 2017-2018 Microchip Technology Inc. DS50002582B-page 19
2.3.1 Recommended Power-up and Power-Down Sequences
Table 2-2 shows the recommended power-up and power-down sequences of the
HV2903 Analog Switch Evaluation Board.
TABLE 2-2: HV2903 ANALOG SWITCH EVALUATION BOARD POWER-UP
AND POWER-DOWN SEQUENCES
2.4 INTERFACE CONNECTIONS
Step Power-up Description Step Power-Down Description
1 VSS on 1 V PP and V NN off
2 VDD on 2 V GP off
3 VLL on with logic signal low 3 V LL
off with logic signal low
4 VGP on 4 V DD off
5 VPP and V NN on 5 V SS off
WARNING
Powering the HV2903 Evaluation Board up/down in an arbitrary sequence may
cause damage to the device.
TABLE 2-3: J2 CONTROL INTERFACE SIGNALS ( )1
Pin # Name Test Point I/O Type Signal Discretion
J2-A2 SCK — LVCMOS-2.5V Input EEPROM Serial Clock Input
J2-B2 CSB — LVCMOS-2.5V Input EEPROM Chip Select Input
J2-A3 MISO — LVCMOS-2.5V Output EEPROM Serial Data Output
J2-B3 MOSI — LVCMOS-2.5V Input EEPROM Serial Data Input
J2-A5 CLR TP15 LVCMOS-3.3V Input HV2903 Latch Clear Logic Input
J2-B5 CLK TP14 LVCMOS-3.3V Input HV2903 Clock Logic Input
J2-C5 LE /EN TP12 LVCMOS-3.3V Input HV2903 Latch Enable Logic Input
J2-D5 MODE TP13 LVCMOS-3.3V Input HV2903 Mode Logic Input
J2-A6 DIN/AB TP20 LVCMOS-3.3V Input HV2903 Data In Logic Input
J2-B6 STBY TP21 LVCMOS-3.3V Input HV2903 Standby Logic Input, Low Active
J2-C6 1_A TP11 LVCMOS-3.3V Input Ch1 Pulser Input for NMOS to V NN
J2-D6 1_B TP10 LVCMOS-3.3V Input Ch1 Pulser Input for PMOS to V PP
J2-A7 1_DMP TP9 LVCMOS-3.3V Input Ch1 Pulser Damp Input for PMOS/NMOS to GND
J2-B7 2_A TP19 LVCMOS-3.3V Input Ch2 Pulser Input for NMOS to V NN
J2-C7 2_B TP18 LVCMOS-3.3V Input Ch2 Pulser Input for PMOS to V PP
J2-D7 2_DMP TP17 LVCMOS-3.3V Input Ch2 Pulser Damp Input for PMOS/NMOS to GND
Note 1: All pins that are not included in this table are “no connect”.
HV2903 Analog Switch Evaluation Board User’s Guide
DS50002582B-page 20 2017-2018 Microchip Technology Inc.
2.5 TESTING THE HV2903 ANALOG SWITCH EVALUATION BOARD
2.5.1 HV2903 Individual Switching Mode Operation (STBY = 1,
MODE = 1)
In the Individual Switching mode, the user can turn on/off 32 switches individually
through the USB connected PC GUI software program:
1. Click the Initialize HV MUX Controller button at the top left corner.
2. Unselect STBY to set HV2903 in normal operation.
3. Select MODE to set HV2903 in Individual Switching mode.
4. Put 32-bit data in DIN to set switches on and off. Data ‘1’ means the switch is on
and data ‘0’ means the switch is off.
5. Click the Set HV MUX button.
6. Then, the GUI and controller board generate 32-bit data and 32 clocks, followed
by one LE negative pulse, and switches are on and off according to DIN in the
GUI.
7. If the user selects CLR and then clicks the Set HV MUX button, all the switches
are off.
2.5.2 HV2903 Bank Switching Mode Operation (STBY = 1, MODE = 0)
In the Bank Switching mode, the user can turn on/off all the even switches (SW0,
SW2,..., SW30) together and all the odd switches (SW1, SW3,..., SW31) through the
USB connected PC GUI software program:
1. Click the Initialize HV MUX Controller button at the top left corner.
2. Unselect STBY to set HV MUX in normal operation.
3. Unselect MODE to set HV2903 in Bank Switching mode.
4. Select EN to set HV2903 Bank Switching to active. If EN is not selected, all the
switches are set to off.
5. Select A/B to set all the even switches on and all the odd switches off.
6. Or, unselect A/B to set all the even switches off and all the odd switches on.
7. Click the Set HV MUX button.
8. The GUI and the HV MUX Controller generate digital control signals according to
the control data of the GUI that the user sets.
Note: The typical voltage and waveforms are provided in Appendix C. “Demo
Board Waveforms”.
Installation and Operation
2017-2018 Microchip Technology Inc. DS50002582B-page 21
2.6 HV MUX CONTROLLER AND GUI MANUAL
The HV MUX Controller generates control signals for the HV2903 Analog Switch
Evaluation Board; it features a Spartan-6 XC6SLX9 FPGA.
2.6.1 Setup Procedure
1. Before powering up the HV2903 Analog Switch Evaluation Board and the HV
MUX Controller, make sure that the latest GUI software is installed on the PC.
2. Start the GUI program; the “Not Connected” message is displayed on the bottom
left of the status bar.
3. Connect the appropriate power supply and turn on the power switch to power up
the HV MUX Controller. The FPGA_OK (LD1) and DC_IN (LD2) on the HV MUX
Controller light up green. A “Connected” message is displayed on the bottom left
of the status bar of the GUI.
The HV MUX Controller is now ready to control the HV2903 Evaluation Board.
FIGURE 2-8: HV MUX CONTROLLER (ADM00825) – FRONT VIEW
Off/On Switch
12V/1A
Power
Connector
DC_IN (LD2)
PWR_OK
(LD4)
USB_Fault
(LD5)
Mini-USB
Connector
FPGA_OK (LD1)
PROM JTAG
J2
J1
HV2903 Analog Switch Evaluation Board User’s Guide
DS50002582B-page 22 2017-2018 Microchip Technology Inc.
2.6.2 HV2903 Analog Switch Evaluation Board GUI Description
Figure 2-9 displays a screen capture of the GUI. Every item indicated by circled
numbers is explained below the figure. The selection of the check box, binary data in
the DIN entry box, and number in Pulses and TOFF entry box are just settings. They do
not change the operation of the HV2903 device and built-in pulsers immediately. By
clicking Set HV MUX, Start and Stop buttons, the control data set by the user in the
GUI changes operation of HV2903 and turns on/off the built-in pulsers in the HV2903
Analog Switch Evaluation Board. See the explanation for each corresponding item.
FIGURE 2-9: HV MUX CONTROLLER BOARD GUI SCREEN CAPTURE
1. Initialize HV MUX Controller: When clicked, the GUI starts the initialization of
FPGA on the HV MUX Controller, and the communication between the GUI and
the HV MUX Controller. If there is no error, the “Initialization Complete” text is
displayed in the Message window.
2. STBY: When checked, the STBY logic input is set to low and HV2903 is set to
operate in Standby mode to decrease power consumption. When unchecked, the
STBY logic input is set to high and HV2903 is set to operate in Normal mode.
3. MODE: When checked, the MODE logic input is set to high and HV2903 is set
to operate in Individual Switching mode. When unchecked, the MODE logic input
is set to low and HV2903 is set to operate in Bank Switching mode.
1
2 3
45
67
8
910
11
12 13
14
16
15
Installation and Operation
2017-2018 Microchip Technology Inc. DS50002582B-page 23
4. DIN: 32-bit data entry boxes. Each bit in the boxes is related to each analog
switch. If data entry is ‘1’, the associated switch is set to on. If data entry is ‘0’,
the associated switch is set to off.
5. CLR: When checked, the CLR logic input is set to high and all the switches of
HV2903 are set to off. When unchecked, the CLR logic input is set to low and the
32 switches of HV2903 are set to ON/OFF states, according to the DIN data
entry.
6. EN: When checked, the EN logic input is set to high and HV2903 is set to active
for Bank Switching mode. When unchecked, the EN logic input is set to low and
all the switches are set to off.
7. A/B: When checked, the A/B logic input is set to high, all the even switches are
set to on and all the odd switches are set to off. When unchecked, the A/B logic
input is set to low, all the even switches are set to off and all the odd switches are
set to on.
8. Set HV MUX: When clicked, the data that the user sets at Steps 2 through 7 is
applied to HV2903. Note that the 32-bit DIN data, 32 clocks and one negative LE
pulse are applied one time only at the Individual Switching mode.
9. Pulses: Entry box to define the number of pulses in the pulse train generated by
the selected pulser. A pulse is a half of the cycle and the pulse train always starts
on the positive pulse first.
10. TOFF: Entry box to define the off time between pulse trains generated by the
selected pulser.
11. CH1/CH2: When checked, the selected pulser is set to generate 5 MHz pulse
trains defined at Steps 9 and 10 by the user.
12. Start: When clicked, the selected pulser starts generating the pulse train.
13. Stop: When clicked, the selected pulser stops generating the pulse train.
14. Message window: Shows information from the GUI program.
15. Clear: When clicked, the messages in the Message window are cleared.
16. Connection Status window: Displays the status of the connection between the
GUI and the HV MUX Controller.
HV2903 Analog Switch Evaluation Board User’s Guide
DS50002582B-page 24 2017-2018 Microchip Technology Inc.
2.7 GENERATION OF PULSER OUTPUT AT SW8A OF HV MUX
This section provides the step-by-step procedure to make the Ch1 pulser output at the
SW8A SMA connector by configuring the GUI.
1. Before powering up the HV2903 Analog Switch Evaluation Board, make sure
that the latest GUI software is installed on the PC.
2. Start the GUI program. On the bottom left of the status bar, the “Not Connected”
message is displayed.
3. Power up the HV MUX Controller and the HV2903 Analog Switch Evaluation
Board as described in Section 2.6.1 “Setup Procedure”. The prompt,
“Connected”, is now displayed in the status bar.
4. Click the Initialize HV MUX Controller button and check the Message window
to see “Initialization Complete”.
5. Uncheck STBY to set the HV2903 to operate normally.
6. Check MODE to set the HV2903 to Individual Switching mode.
7. Change the DIN to Bit 8 from ‘0’ to ‘1’ to set SW8 ON
(DIN = 00000000 00000000 00000001 00000000).
8. Click the Set HV MUX button to turn on the HV2903 SW8.
9. Change Pulses to 10.
10. Check CH1.
11. Click the Start button. The CH1 pulser starts to generate pulse trains with
10 pulses and a 30 ms TOFF time.
The Ch1 and Ch2 of the oscilloscope in Figure 2-10 display the SW8A and the SW9A
waveforms.
FIGURE 2-10: TYPICAL WAVEFORM OF 2:1 MUX CONNECTED TO PULSER
 

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 


     
!
!
!
!
!
!
!
!
!
!
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!
!
!
!
!
!
!
!
!
!
!
!
!
!
!!!!
!
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!
!
!
!
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!
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!
!!!
!
!! !!!
!
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
      


Ch1
50V/div
Ch2
50V/div
HV2903
ANALOG SWITCH
EVALUATION BOARD
USER’S GUIDE
2017-2018 Microchip Technology Inc. DS50002582B-page 25
Chapter 3. PCB Design and Layout Notes
3.1 PCB LAYOUT TECHNIQUES FOR HV2903
The HV2903 Evaluation Board is equipped with a HV2903 device, which has 32 analog
switches and is able to pass high-voltage, high-current and high-frequency pulses. The
PCB design and layout of the board are important to ensure the success of the
implementation.
3.1.1 High-Voltage and High-Speed Grounding, and Layout
Techniques
The center balls at the bottom of the HV2903 TFBGA package are internally connected
to the IC’s substrate (VSUB). These balls should be connected to GND, externally on
the PCB.
The designer must pay attention to the connecting traces, since the analog switches
pass the high-voltage and high-speed signals. In particular, controlled impedance of
50to the ground plane and more trace spacing needs to be applied in this situation.
High-speed PCB trace design practices are used for the HV2903 Analog Switch
Evaluation Board PCB layout. The internal circuitry of the HV2903 can operate at a
high frequency, with the primary speed limitation being the load capacitance. Because
of this high speed and the high transient currents that result from driving capacitive
loads, the supply voltage bypass capacitors should be as close to the pins as possible.
All the GND pins should have low-inductance feedthrough via connections that are
connected directly to a solid ground plane at the second layer of the PCB.
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, in order to prevent resonance in the
power supply lines.
Pay particular attention to minimizing trace lengths and using sufficient trace width to
reduce inductance. Surface mount components are highly recommended.
The use of a solid ground plane, and good power and signal layout practices will
prevent any possible parasitic capacitance coupling. The user should also ensure that
the circulating ground return current from a capacitive load cannot react with common
inductance to create noise voltages in the input logic circuitry.
3.1.2 Decoupling Capacitors Selection
The VLL, VDD and VSS supply voltage rails can provide fast transient current. Therefore,
they should have a low-impedance bypass capacitor at each of the chip’s pins. Use a
surface mount ceramic capacitor of 1.0 to 2.2 F capacitance with an appropriate
voltage rating.
The user needs to pay additional attention to what type of ceramic capacitor is selected
for these bypass capacitors. The low impedance means low-ESR/ESL impedance
within the frequency bandwidth range of ultrasound pulses transmitted, including the
very fast dV/dt of the pulse’s rising and falling edges. A capacitor with low-temperature
coefficient and low-voltage coefficient is also recommended. The type of X7R and X5R,
or other more advanced multilayer ceramic types, should be selected for these
purposes.
HV2903 Analog Switch Evaluation Board User’s Guide
DS50002582B-page 26 2017-2018 Microchip Technology Inc.
NOTES:
HV2903
ANALOG SWITCH
EVALUATION BOARD
USER’S GUIDE
2017-2018 Microchip Technology Inc. DS50002582B-page 27
Appendix A. Schematic and Layouts
A.1 INTRODUCTION
This appendix contains the following schematics and layouts for the HV2903 Analog
Switch Evaluation Board (ADM00795) and the HV MUX Controller Board (ADM00825).
• HV2903 Analog Switch Evaluation Board (ADM00795):
- ADM00795 – Schematic
- ADM00795 – Top Silk
- ADM00795 – Top Copper and Silk
- ADM00795 – Top Copper
- ADM00795 – Inner 1
- ADM00795 – Inner 2
- ADM00795 – Inner 3
- ADM00795 – Bottom Copper
- ADM00795 – Bottom Copper and Silk
- ADM00795 – Bottom Silk
• HV MUX Controller Board (ADM00825):
- ADM00825 – Schematic (Connection)
- ADM00825 – Schematic (Power Supply)
- ADM00825 – Schematic (USB to SPI)
- ADM00825 – Schematic (Programmable Clock)
- ADM00825 – Schematic (FPGA)
- ADM00825 – Schematic (FPGA Decoupling Capacitors)
- ADM00825 – Schematic (Connectors)
- ADM00825 – Top Silk
- ADM00825 – Top Copper and Silk
- ADM00825 – Top Copper
- ADM00825 – Inner 1
- ADM00825 – Inner 2
- ADM00825 – Inner 3
- ADM00825 – Inner 4
- ADM00825 – Bottom Copper
- ADM00825 – Bottom Copper and Silk
- ADM00825 – Bottom Silk
DS50002582B-page 28 2017-2018 Microchip Technology Inc.
FIGURE A-1: ADM00795 – SCHEMATIC
Schematic and Layouts
2017-2018 Microchip Technology Inc. DS50002582B-page 29
FIGURE A-2: ADM00795 – TOP SILK
FIGURE A-3: ADM00795 – TOP COPPER AND SILK
HV2903 Analog Switch Evaluation Board User’s Guide
DS50002582B-page 30 2017-2018 Microchip Technology Inc.
FIGURE A-4: ADM00795 – TOP COPPER
FIGURE A-5: ADM00795 – INNER 1
Schematic and Layouts
2017-2018 Microchip Technology Inc. DS50002582B-page 31
FIGURE A-6: ADM00795 – INNER 2
FIGURE A-7: ADM00795 – INNER 3
HV2903 Analog Switch Evaluation Board User’s Guide
DS50002582B-page 32 2017-2018 Microchip Technology Inc.
FIGURE A-8: ADM00795 – BOTTOM COPPER
FIGURE A-9: ADM00795 – BOTTOM COPPER AND SILK
Schematic and Layouts
2017-2018 Microchip Technology Inc. DS50002582B-page 33
FIGURE A-10: ADM00795 – BOTTOM SILK
DS50002582B-page 34 2017-2018 Microchip Technology Inc.
FIGURE A-11: ADM00825 – SCHEMATIC (CONNECTION)
MUPB001_PWR.SchDoc
SCK
MISO
MOSI
USB_CONFIG
CSBAR
FPGA_DONE
FPGA_RST
SPI_RST
EXT_INT
GP8
GP4
GP7
USB_TO_SPI.SchDoc
CTRL_OEC
CTRL_SDI
SDO
CTRL_OED
CTRL_OEB
CTRL_SCK
CTRL_CSB
CLK0_N
CLK1_P
CLK1_N
CLK2_P
CLK2_N
CLK4
CLK0_P
CLK3_P
CLK3_N
CLK5
40MHz_N
40MHz_P
PROG_CLK.SchDoc
PROGB_IN
FPGA_DONE
SCK
MOSI
MISO
CSBAR
FPGA_RST
SPI_RST
USB_CONFIG
SDO
CTRL_SCK
CTRL_CSB
CTRL_OEC
CTRL_OED
CTRL_OEB
CLK0_P
CLK0_N
IO_2V5_0_P
IO_2V5_0_N
IO_2V5_1_P
IO_2V5_1_N
IO_2V5_2_P
IO_2V5_2_N
IO_2V5_3_P
IO_2V5_3_N
IO_2V5_4_P
IO_2V5_4_N
IO_2V5_5_P
IO_2V5_5_N
IO_2V5_6_P
IO_2V5_6_N
IO_2V5_7_P
IO_2V5_7_N
IO_2V5_8_P
IO_2V5_8_N
IO_2V5_10_P
IO_2V5_10_N
IO_2V5_9_P
IO_2V5_9_N
IO_2V5_11_P
IO_2V5_11_N
IO_2V5_12_P
IO_2V5_12_N
IO_2V5_13_P
IO_2V5_13_N
IO_2V5_14_P
IO_2V5_14_N
IO_3V3_1
IO_3V3_2
IO_3V3_3
IO_3V3_4
IO_3V3_5
GP4
GP7
EXT_INT
CLK1_P
CLK1_N
CTRL_SDI
IO_2V5_15_N
IO_2V5_15_P
IO_2V5_16_N
IO_2V5_16_P
IO_2V5_17_N
IO_2V5_17_P
IO_2V5_18_N
IO_2V5_18_P
IO_2V5_19_N
IO_2V5_19_P
IO_2V5_20_N
IO_2V5_20_P
IO_2V5_21_N
IO_2V5_21_P
IO_3V3_6_P
IO_3V3_6_N
IO_3V3_7_P
IO_3V3_7_N
IO_3V3_8_P
IO_3V3_8_N
IO_3V3_9_P
IO_3V3_9_N
IO_3V3_10_P
IO_3V3_10_N
IO_3V3_11_P
IO_3V3_11_N
IO_3V3_12_P
IO_3V3_12_N
IO_3V3_13_P
IO_3V3_13_N
IO_3V3_14_P
IO_3V3_14_N
40MHz_N
40MHz_P
IO_3V3_15
IO_3V3_16
IO_3V3_17
FPGA01.SchDoc
SPI_CSBAR
SPI_SCK
SPI_MOSI
SPI_MISO
FPGA_RST
SPI_RST
USB_CONFIG
EXT_INT
FPGA_DONE
PROGB_IN
GP4
GP7
CTRL_OEC
CLK0_P
CLK0_N
CLK1_P
CLK1_N
IO_2V5_0_P
IO_2V5_0_N
IO_2V5_2_P
IO_2V5_2_N
IO_2V5_1_P
IO_2V5_1_N
IO_2V5_3_P
IO_2V5_3_N
IO_2V5_5_P
IO_2V5_5_N
IO_2V5_7_P
IO_2V5_7_N
IO_2V5_9_P
IO_2V5_9_N
IO_2V5_11_P
IO_2V5_11_N
IO_2V5_13_P
IO_2V5_13_N
IO_2V5_4_P
IO_2V5_4_N
IO_2V5_6_P
IO_2V5_6_N
IO_2V5_8_P
IO_2V5_8_N
IO_2V5_10_P
IO_2V5_10_N
IO_2V5_12_P
IO_2V5_12_N
IO_2V5_14_N
IO_2V5_14_P
IO_3V3_1
IO_3V3_2
IO_3V3_3
IO_3V3_4
IO_3V3_5
CLK4
CLK2_P
CLK2_N
IO_2V5_15_N
IO_2V5_15_P
IO_2V5_16_N
IO_2V5_16_P
IO_2V5_17_N
IO_2V5_17_P
IO_2V5_18_N
IO_2V5_18_P
IO_2V5_19_N
IO_2V5_19_P
IO_2V5_20_N
IO_2V5_20_P
IO_2V5_21_N
IO_2V5_21_P
CLK3_P
CLK3_N
CLK5
IO_3V3_6_P
IO_3V3_6_N
IO_3V3_7_P
IO_3V3_7_N
IO_3V3_8_P
IO_3V3_8_N
IO_3V3_9_P
IO_3V3_9_N
IO_3V3_10_P
IO_3V3_10_N
IO_3V3_11_P
IO_3V3_11_N
IO_3V3_12_P
IO_3V3_12_N
IO_3V3_13_P
IO_3V3_13_N
IO_3V3_14_P
IO_3V3_14_N
IO_3V3_15
IO_3V3_16
IO_3V3_17
Connector.SchDoc
IO_2V5_0_P
IO_2V5_0_N
IO_2V5_1_N
IO_2V5_1_P
IO_2V5_2_P
IO_2V5_2_N
IO_2V5_3_P
IO_2V5_3_N
IO_2V5_4_P
IO_2V5_4_N
IO_2V5_5_P
IO_2V5_5_N
IO_2V5_6_P
IO_2V5_6_N
IO_2V5_7_P
IO_2V5_7_N
IO_2V5_8_P
IO_2V5_8_N
IO_2V5_9_P
IO_2V5_9_N
IO_2V5_10_P
IO_2V5_10_N
IO_2V5_11_P
IO_2V5_11_N
IO_2V5_12_P
IO_2V5_12_N
IO_2V5_13_P
IO_2V5_13_N
IO_2V5_14_P
IO_2V5_14_N
IO_3V3_1
IO_3V3_2
IO_3V3_3
IO_3V3_4
IO_3V3_5
CLK2_P
CLK2_N
CLK4
CTRL_OED
CTRL_OEB
CTRL_SCK
CTRL_CSB
SDO
CTRL_SDI
IO_2V5_15_P
IO_2V5_15_N
IO_2V5_16_N
IO_2V5_16_P
IO_2V5_17_P
IO_2V5_17_N
IO_2V5_18_N
IO_2V5_18_P
IO_2V5_19_P
IO_2V5_19_N
IO_2V5_20_N
IO_2V5_20_P
IO_2V5_21_P
IO_2V5_21_N
CLK3_P
CLK3_N
CLK5
40MHz_QA1_N
40MHz_QA1_P
CLK2_P
CLK2_N
CLK4
IO_3V3_6_P
IO_3V3_6_N
IO_3V3_7_P
IO_3V3_7_N
IO_3V3_8_P
IO_3V3_8_N
IO_3V3_9_P
IO_3V3_9_N
IO_3V3_10_P
IO_3V3_10_N
IO_3V3_11_P
IO_3V3_11_N
IO_3V3_12_P
IO_3V3_12_N
IO_3V3_13_P
IO_3V3_13_N
IO_3V3_14_P
IO_3V3_14_N
2017-2018 Microchip Technology Inc. DS50002582B-page 35
FIGURE A-12: ADM00825 – SCHEMATIC (POWER SUPPLY)

Product specificaties

Merk: Microchip
Categorie: Niet gecategoriseerd
Model: HV2904

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