Analog Devices EVAL-AD7606SDZ Manuale utente

EVAL-AD7606SDZ/EVAL-AD7607SDZ/

EVAL-AD7608SDZ User Guide

UG-851

One Technology Way •P. O. Box 9106 •Norwood, MA 02062-9106, U.S.A. •Tel: 781.329.4700 •Fax: 781.461.3113 •www.analog.com

Evaluating the AD7606/AD7606-6/AD7606-4/AD7607/AD7608 16-Bit Simultaneous

Sampling, 8-/6-/4-Channel, SAR ADC

PLEASE SEE THE LAST PAGE FOR AN IMPORTANT

WARNING AND LEGAL TERMS AND CONDITIONS. Rev. 0 | Page 1 of 15

FEATURES

Full featured evaluation board for the AD7606/AD7606-6/

AD7606-4/AD7607/AD7608

On-board power supplies

Standalone capability

System demonstration platform (SDP) compatible (EVAL-

SDP-CB1Z)

PC software for control and data analysis (download from

AD7606/AD7606-6/AD7606-4/AD7607/AD7608 product

pages)

EVALUATION KIT CONTENTS

EVAL-AD7606SDZ/EVAL-AD7606-6SDZ/EVAL-AD7606-4SDZ/

EVAL-AD7607SDZ/EVAL-AD7608SDZ evaluation board

Evaluation software CD for the AD7606/AD7606-6/AD7606-4/

AD7607/AD7608

Mains power supply adapter

Screw/nut kit

ADDITIONAL EQUIPMENT NEEDED

EVAL-SDP-CB1Z system demonstration platform

PC running Windows® Vista or Windows 7 with USB 2.0 port

Signal source

SMB and USB cables

ONLINE RESOURCES

Documents Needed

AD7606/AD7606-6/AD7606-4/AD7607/AD7608 data sheets

EVAL-AD7606SDZ/EVAL-AD7606-6SDZ/EVAL-AD7606-4SDZ/

EVAL-AD7607SDZ/EVAL-AD7608SDZ user guide

Required Software

AD7606 evaluation software

Design and Integration Files

Schematics, layout files, bill of materials

EVALUATION BOARD DESCRIPTION

The EVAL-AD7606SDZ/EVAL-AD7606-6SDZ/EVAL-AD7606-

4SDZ/EVAL-AD7607SDZ/EVAL-AD7608SDZ are a full

featured evaluation board that allows the user to easily evaluate

all the features of the AD7606/AD7606-6/AD7606-4/AD7607/

AD7608 analog-to-digital converters (ADCs). The evaluation

board can be controlled by the EVAL-SDP-CB1Z SDP board via

a 120-way SDP connector (J102). The SDP board allows the

evaluation board to be controlled through the USB port of a PC

using the AD7606 evaluation software, which is available for

download from the AD7606/AD7606-6/AD7606-4/AD7607/

AD7608 product pages or from the installer CD included in the

evaluation board kit.

On-board components include an ADP7104ARDZ-5.0 5 V, low

noise LDO and ADR421 high precision, band gap voltage

reference.

TYPICAL SETUP

Figure 1.

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TABLE OF CONTENTS

Features .............................................................................................. 1

Evaluation Kit Contents................................................................... 1

Additional Equipment Needed....................................................... 1

Online Resources.............................................................................. 1

Evaluation Board Description......................................................... 1

Typical Setup ..................................................................................... 1

Revision History ............................................................................... 2

Quick Start Guide............................................................................. 3

Evaluation Board Hardware ............................................................ 4

Device Description....................................................................... 4

Hardware Link Options............................................................... 4

Power Supplies .............................................................................. 4

Sockets/Connectors...................................................................... 4

Channel Input ................................................................................4

Evaluation Board Software...............................................................6

Software Installation .....................................................................6

Description of Main Window......................................................8

Configuration Tab .........................................................................8

Waveform Capture Tab.............................................................. 10

Histogram Tab ............................................................................ 11

AC Testing—FFT Capture ........................................................ 12

Summary Tab.............................................................................. 13

Saving Files.................................................................................. 14

Opening Files.............................................................................. 14

REVISION HISTORY

8/15—Revision 0: Initial Version

EVAL-AD7606SDZ/EVAL-AD7607SDZ/EVAL-AD7608SDZ User Guide UG-851

Rev. 0 | Page 3 of 15

QUICK START GUIDE

Follow these steps to quickly evaluate the AD7606/AD7606-6/

AD7606-4/AD7607/AD7608 ADC. For detailed instructions,

see the subsequent sections.

1. Install the evaluation software from the AD7606/AD7606-6/

AD7606-4/AD7607/AD7608 product pages or from the

included CD. Ensure that the EVAL-SDP-CB1Z SDP

board is disconnected from the USB port of the PC while

installing the software. (The PC may need to be restarted

after the installation.)

2. Ensure that the various link options are configured as

outlined in Table 3.

3. Connect the E VA L -SDP-CB1Z SDPboard to the

evaluation board as shown in Figure 2. Screw the two

boards together using the enclosed nylon screw/nut kit

to ensure that the boards connect firmly together.

4. Connect a 5 V power supply to J1 and ensure LK1 is in

Position A.

5. Connect the E VA L -SDP-CB1Z SDP board to the PC via

the USB cable. Choose to automatically search for the

drivers for the SDP board if prompted by the operating

system.

6. Launch the evaluation software from the Analog Devices

subfolder in the Programs menu.

7. Connect an input signal via V1 to V8.

Figure 2. Evaluation Board (Left) Connected to the SDP Board (Right)

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V1 TO V8

LK1

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EVALUATION BOARD HARDWARE

DEVICE DESCRIPTION

The AD7606/AD7606-6/AD7606-4/AD7607/AD7608 ADCs

are 16-bit, 8-/6-/4-channel, simultaneous sampling successive

approximation ADCs. The devices operate from a single 2.7 V

to 5.25 V power supply and feature throughput rates of up to

200 kSPS. The devices have on-board 1 MΩ input buffers

meaning direct connection from sensor to ADC.

Full data on the AD7606/AD7606-6/AD7606-4/

AD7607/AD7608 is available in the AD7606/AD7606-6/

AD7606-4/AD7607/AD7608 data sheets, which should be

consulted in conjunction with this user guide when using the

evaluation board. Full details on the E VA L -SDP-CB1Z are

available at the SDP board product page.

HARDWARE LINK OPTIONS

The functions of the link options are described in Table 3. The

default setup is configured to operate the evaluation board with

the main power supply or 9 V adapter and to interface to the SDP

board.

POWER SUPPLIES

Before applying power and signals to the evaluation board,

ensure that all link positions are set according to the required

operating mode. See Table 3 for the complete list of link options.

The AD7606/AD7606-6/AD7606-4/AD7607/AD7608

evaluation board is supplied with a wall-mountable switching

power supply that provides 9 V dc output. Connect the supply

to a 100 V to 240 V ac wall outlet at 50 Hz to 60 Hz. The output

from the supply is provided through a 2.0 mm inner diameter

jack that connects to the evaluation board at J1. The 9 V supply

is connected to the on-board, 5 V linear regulator that supplies

the correct bias to each of the various sections on the evaluation

board and on the E VA L -SDP-CB1Z SDP board.

When using the E VA L -AD7606SDZ/EVA L -AD7606-6SDZ/

E VA L-AD7606-4SDZ/E VA L -AD7607SDZ/E VA L -AD7608SDZ

evaluation board with the E VA L -SDP-CB1Z SDP board, power

the evaluation board through the J1 connector.

If the evaluation board is used without the 9 V adapter, an

external power supply in the range 7 V to 9 V must be

connected to J3 to supply the ADP7104 5 V linear regulator.

Each supply is decoupled on this evaluation board using 10 µF

tantalum and 100 nF multilayer ceramic capacitors.

Table 1. External Power Supplies Required

Power

Supply

Voltage

Range Description

DC Jack 7 V to 9 V ± 5% Supplies power to on-board

power management devices

J3 7 V to 9 V Digital logic supply

SOCKETS/CONNECTORS

The connectors and sockets on the evaluation board are

outlined in Table 2.

Table 2. On-Board Connectors

Connector Function

J1 7 V to 9 V, 2.0 mm dc jack connector

J2 120-way connector for EVAL-SDP-CB1Z interface

J3 External power connector, 7 V to 9 V dc input

V1 to V8 Analog input terminal block.

The default interface to this evaluation board is via the 120-way

connector, which connects the AD7606/AD7606-6/AD7606-4/

AD7607/AD7608 evaluation board to the E VA L -SDP-CB1Z

SDP board.

CHANNEL INPUT

Depending on the board, the external signal can be applied to

V1 to V8.

AD7606/AD7607/AD7608

The AD7606/AD7607/AD7608 are 8-channel data acquisition

systems (DAS) with simultaneous sampling ADC. An external

signal can be applied to V1 to V8.

AD7606-6

The AD7606-6 is a 6-channel DAS with simultaneous sampling

ADC. An external signal can be applied to V1 to V3 and V5 to

V7. V5 to V7 match V4 to V6.

AD7606-4

The AD7606-4 is an 4-channel DAS with simultaneous

sampling ADC. An external signal can be applied to V1 to

V2 and V5 to V6.

EVAL-AD7606SDZ/EVAL-AD7607SDZ/EVAL-AD7608SDZ User Guide UG-851

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Table 3. Link Options

Link Default Position Function

LK1 A This link is used to select the power supply source for the evaluation board.

In Position A, the board is powered with the J1 wall mounted switching supply.

In Position B, the J3 terminal block is the source.

LK2 Insert This link is used to supply the SDP power supply form the evaluation board

The EVAL-SDP-CB1Z is powered from the ADP7104 5 V linear regulator

LK3 B LK3 is used to select the VDRIVE source for the AD7606/AD7606-6/AD7606-4/AD7607/AD7608.

In Position A, the AD7606/AD7606-6/AD7606-4/AD7607/AD7608 are supplied with 3.3 V VDRIVE.

In Position B, the AD7606/AD7606-6/AD7606-4/AD7607/AD7608 are supplied with 5 V VDRIVE, 5 V VDRIVE

is needed to run the device at 200 kSPS in serial interface mode.

SL1 A In Position A, the CS signal is supplied from the SDP terminal, J2.

In Position B, The CS SMB is selected.

SL2 A In Position A, the SCLK signal is supplied from the SDP terminal, J2.

In Position B, the SCLK SMB is selected.

SL3 A In Position A, the STBY signal is supplied from the SDP terminal, J2.

In Position B, the STBY SMB is selected.

SL4 A In Position A, the CS signal is supplied from the SDP terminal, J2.

In Position B, the CS SMB is selected.

SL5 A In Position A, the RESET signal is supplied from the SDP terminal, J2.

In Position B, the RESET SMB is selected.

SL6 A In Position A, the CS signal is supplied from the SDP terminal, J2.

In Position B, the

SMB is selected.

SL7 A In Position A, the CONVST signal is supplied from the SDP terminal, J2.

In Position B, the CONVST SMB is selected.

K0 to 15 Do not insert (DNI) Solder links for bypassing the U level translator.

UG-851 EVAL-AD7606SDZ/EVAL-AD7607SDZ/EVAL-AD7608SDZ User Guide

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EVALUATION BOARD SOFTWARE

SOFTWARE INSTALLATION

The EVAL-AD7606SDZ/EVAL-AD7606-6SDZ/EVAL-

AD7606-4SDZ/EVAL-AD7607SDZ/EVAL-AD7608SDZ kit

includes the evaluation software on a CD; the software is also

available for download from the AD7606/AD7606-6/AD7606-4/

AD7607/AD7608 product pages.

There are two parts to the installation:

AD7606 evaluation software installation

EVAL-SDP-CB1Z SDP board drivers installation

Warning

The evaluation board software and drivers must be installed

before connecting the evaluation board and SDP board to the

USB port of the PC to ensure that the evaluation system is

correctly recognized when it is connected to the PC.

Installing the Evaluation Software

To insta ll the AD7606 evaluation board software

1. Insert the included evaluation software installation CD

into the CD drive of a Windows-based PC, and open the

contents of the CD.

2. Double-click the setup.exe file to begin the installation.

By default, the software is saved to the following location:

C:\Program Files\Analog Devices\AD7606\.

3. A dialog box appears asking for permission to allow the

program to make changes to your computer. Click Yes to

begin the installation process.

Figure 3. Evaluation Software Installation—User Account Control

4. Select the location to install the software, and then click Next.

Figure 4. Evaluation Software Installation—Destination Directory

5. A license agreement appears. Read the agreement, select

I accept the License Agreement, and then click Next.

6. A summary of the installation is displayed. Click Next to

continue.

Figure 5. Evaluation Software Installation—Start Installation

7. A dialog box informs you when the evaluation software

installation is complete. Click Next to proceed with the

installation of the SDP drivers.

Figure 6. Evaluation Software Installation—Installation Complete

8. The installation of the evaluation software completes.

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EVAL-AD7606SDZ/EVAL-AD7607SDZ/EVAL-AD7608SDZ User Guide UG-851

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Installing the SDP Board Drivers

After the AD7606 evaluation board software installation is

complete, the ADI SDP Drivers Setup wizard window opens

for the installation of the EVAL-SDP-CB1Z SDP board drivers.

1. The ADI SDP Drivers Setup Wizard opens. Click Next to

begin the driver installation process.

Figure 7. EVAL-SDP-CB1Z Drivers Installation—Setup Wizard

2. Select a destination folder for the SDP drivers, and click

Install.

Figure 8. EVAL-SDP-CB1Z Drivers Installation—Choose Install Location

3. Click Install to proceed with the installation.

Figure 9. EVAL-SDP-CB1Z Drivers Installation—Windows Security

4. The SDP drivers installation completes. Click Finish.

Figure 10. EVAL-SDP-CB1Z Drivers Installation—Complete

After the evaluation software installation is complete, connect the

EVAL-AD7606SDZ/EVAL-AD7606-6SDZ/EVAL-AD7606-4SDZ/

EVAL-AD7607SDZ/EVAL-AD7608SDZ evaluation board to the

EVAL-SDP-CB1Z SDP board as described in the Evaluation

Board Hardware section.

When you first plug in the EVAL-SDP-CB1Z SDP board via

the USB cable provided, allow the Found Hardware Wizard

to run. After the drivers are installed, check that the board is

connected correctly by looking at the Device Manager of the

PC. The Device Manager can be found by right-clicking

My Computer > Manage > Device Manager from the list

of System Tools.

The EVAL-SDP-CB1Z SDP board appears under ADI

Development Tools, as shown in Figure 11.

Figure 11. Device Manager

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DESCRIPTION OF MAIN WINDOW

The following tools allow user control of the different chart

displays. When the software is launched, the main AD7606

evaluation software window opens (see Figure 12).

The main evaluation software window, as shown in Figure 12,

has the following features:

•Menu bar

•Control buttons

•Configuration display

•Data capture display

Menu Bar

The menu bar, Label 1 in Figure 12, consists of the File and

Help menus.

File Menu

•Save Data. Saves captured data in comma separated values

(CSV) format for future analysis.

•Load Data. Loads previously captured data in CSV format

for analysis.

•Print Front Panel. Prints out the front panel.

•Save As Picture.Saves current tab image as a JPEG file.

•Exit. Exits the program.

Help Menu

•Analog.com.Links to the Analog Devices, Inc., website.

Control Buttons, Drop-Down Boxes, and Indicators

The Configuration, Waveform, Histogram, FFT, and

Summary tabs control which tab is displayed. In each of these

tabs, device configuration and data analysis results can be set

and viewed, respectively.

CONFIGURATION TAB

The configuration tab contains control to configure the AD7606/

AD7606-6/AD7606-4/AD7607/AD7608. Available controls are

sampling rate, oversampling, range, and convert start pulse

width.

Sampling Rate

The sampling rate control (Label 3 in Figure 12) is used to

increase the rate of convert start pulses to the AD7606/

AD7606-6/AD7606-4/AD7607/AD7608. The control accepts

values from 769 Hz to 200,000 Hz. If oversampling is enabled

the maximum limit of sampling is decreases.

Oversampling

The oversampling drop-down menu (Label 4 in Figure 12) is

used to enable and disable oversampling and choose from rates

of oversample by 2, 4, 8, 16, 32, and 64. See the AD7606/

AD7606-6/AD7606-4/AD7607/AD7608 data sheets for more

information on the digital filter profile. The maximum output

data rate of the AD7606/AD7606-6/AD7606-4/AD7607/

AD7608 is limited by the selected oversampling rate.

Range

The 5V / 10 V Range drop-down menu (Label 5 in Figure 12) is

used to alter the signal analysis calculations for the Histogram,

Waveform, and FFT windows. The RANGE pin is not

hardwired to a GPIO pin. The range is selected by inserting

either the R1 or R2 resistor to tie the pin to DGND or VDRIVE.

The default range is ±10 V.

Convst Pulse Width

The Cnvst Pulse Width control (Label 6 in Figure 12) is used to

vary the convert start pulse width and is set to 50 ns by default.

Samples

The user can select the number of samples to be captured from

the # Samples drop-down menu (Label 7 in Figure 12). The

default number of samples is 4096; you are free to change this

as required.

Taking Samples

To initiate a conversion and capture the sample data, click the

Sample button or the Continuous button. Both the Sample and

the Continuous buttons are located at the top of the window

(Label 8 in Figure 12). When you click the Sample button, the

software instructs the EVA L -SDP-CB1Z board to take the required

number of samples at the required frequency from the eval-

uation board. The E VA L-AD7606SDZ/E VA L -AD7606-6SDZ/

E VA L-AD7606-4SDZ/E VA L -AD7607SDZ/EVA L -AD7608SDZ

runs with sampling speeds less than or equal to 200 kSPS. You

can choose the sampling frequency up to this rate and the

number of samples to be taken.

The samples taken are then uploaded and displayed. An FFT

and/or histogram can be calculated and displayed. If you click

the Continuous button, the software repeats the process indefi-

nitely until you click Stop. (The Continuous button switches to

Stop when clicked).

Note that no data appears on the screen if the channels are not

selected. Set the ADC 1 ON/OFF to ADC 8 ON/OFF buttons

in the Part Information section to ON to select the desired

channel.

EVAL-AD7606SDZ/EVAL-AD7607SDZ/EVAL-AD7608SDZ User Guide UG-851

Rev. 0 | Page 9 of 15

Figure 12. AD7606 Evaluation Software Main Window

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Rev. 0 | Page 10 of 15

WAVEFORM CAPTURE TAB

The Waveform tab, as shown in Figure 14, is used for waveform

capture.

The waveform analysis reports the amplitudes recorded from

the captured signal as well as the frequency of the signal tone.

The analysis report is generated for the ADC channel selected

via the menu down the right hand side (Label 1 in Figure 14).

At the bottom right of the graph are the zoom options. These

allow you to zoom in and out to get a closer look at a sample.

The Waveform Analysis section (Label 2 in Figure 14), which is

located beneath the waveform graph, contains information about

the samples taken; for example, minimum/maximum position

or velocity, the spread, the standard deviation, and the mean.

The waveform graph displays the information for all eight input

channels or as many channels as desired. Eight buttons located

to the right hand side of the graph, labeled ADC 1 ON/OFF to

ADC 8 ON/OFF are used to select which channel’s data is

displayed (Label 1 in Figure 14). An indicator, located to the

right of the graph (Label 3 in Figure 14), shows what color

graph represents each channel when the data from several

channels is displayed.

Data Capture Display

Four tabs display the conversion data in different formats:

Wave for m , Histogram, FFT, and Summary.

The tools shown in Figure 13 allow user control of the different

chart displays within the four tabs.

Figure 13. Chart Tools

Figure 14. Waveform Tab

13283-013

1. USED FOR CONTROLLING

THE CURSOR IF PRESENT.

2. USED FOR ZOOMING INAND OUT.

3. USED FOR PANNING.

123

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