Analog Devices EVAL-AD5629RSDZ Manual de usuario

EVAL-AD5629RSDZ/EVAL-AD5669RSDZ User Guide

UG-867

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 AD5629R/AD5669R, Octal, 16-/12-Bit, denseDAC

PLEASE SEE THE LAST PAGE FOR AN IMPORTANT

WARNING AND LEGAL TERMS AND CONDITIONS.Rev. 0 | Page 1 of 14

FEATURES

Full featured evaluation boards for the AD5629R/AD5669R

On-board reference

Various link options

PC control in conjunction with the Analog Devices, Inc.,

EVAL-SDP-CB1Z system demonstration platform (SDP)

EVALUATION KIT CONTENTS

EVAL-AD5629RSDZ/EVAL-AD5669RSDZ evaluation boards

CD includes

Self installing evaluation software that allows users to

control the board and exercise all functions of the device

Electronic version of theEVAL-AD5629RSDZ/

EVAL-AD5669RSDZ user guide

ADDITIONAL EQUIPMENT AND SOFTWARE NEEDED

EVAL-SDP-CB1Z SDP board (includes a USB cable)

PC running Windows Vista, Windows 7, or Windows 8 with a

USB 2.0 port

ONLINE RESOURCES

Documents needed

AD5629R/AD5669R

EVAL-AD5629RSDZ/EVAL-AD5669RSDZ user guide

Required software

AD5629R/AD5669R evaluation software (download from the

EVAL-AD5629RSDZ/EVAL-AD5669RSDZ product pages)

Design and integration files

Schematics, layout files, bill of materials

GENERAL DESCRIPTION

This user guide details the operation of the evaluation boards

for the AD5669R octal channel, 16-bit, voltage output digital-to-

analog converter (DAC) and the AD5629R octal channel, 12-bit,

voltage output DAC.

The E VA L-AD5629RSDZ/E VA L -AD5669RSDZ evaluation boards

help users quickly prototype new AD5629R/AD5669R circuits and

reduce design time. The AD5629R/AD5669R operates from a

single 2.7 V to 5.5 V supply. The AD5629R/AD5669R has an

internal 1.25 V or 2.5 V reference giving an output voltage span of

2.5 V or 5 V. T h e internal reference is off at power-up, allowing

the use of an external reference; the REF195 is provided on-board

as a 5 V reference source. The device must be written to after

power-up to turn on the internal reference.

The evaluation boards interface to the USB port of a PC via the

SDP-B board. Software is supplied with the evaluation boards to

allow the user to program the AD5629R/AD5669R.

The evaluation boards are compatible with the E VA L -SDP-CB1Z

Blackfin® SDP controller board (SDP-B), available to order on

the Analog Devices website at www.analog.com.

Full data on the AD5629R/AD5669R is available in the

corresponding data sheets, available from Analog Devices, which

should be consulted in conjunction with this user guide when

using the evaluation boards.

UG-867 EVAL-AD5629RSDZ/EVAL-AD5669RSDZ User Guide

Rev. 0 | Page 2 of 14

TABLE OF CONTENTS

Features .............................................................................................. 1

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

Additional Equipment and Software Needed................................... 1

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

General Description......................................................................... 1

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

Typical Evaluation Setup ................................................................. 3

Getting Started.................................................................................. 4

Installing the Software ................................................................. 4

Evaluation Board Setup Procedures........................................... 4

Evaluation Board Hardware............................................................ 5

Power Supplies.............................................................................. 5

Input Signals...................................................................................5

Output Signals ...............................................................................5

Link Configuration Options ............................................................6

Setup Conditions...........................................................................6

Evaluation Board Circuitry..............................................................7

How to Use the Software ..................................................................8

Starting the Software.....................................................................8

Software Operation.......................................................................9

Evaluation Board Schematics and Artwork................................ 10

Ordering Information.................................................................... 14

Bill of Materials........................................................................... 14

REVISION HISTORY

9/15—Revision 0: Initial Version

EVAL-AD5629RSDZ/EVAL-AD5669RSDZ User Guide UG-867

Rev. 0 | Page 3 of 14

TYPICAL EVALUATION SETUP

Figure 1. Typical Evaluation Setup of the AD5629R/AD5669R Evaluation Boards

13430-001

UG-867 EVAL-AD5629RSDZ/EVAL-AD5669RSDZ User Guide

Rev. 0 | Page 4 of 14

GETTING STARTED

INSTALLING THE SOFTWARE

The evaluation kit for the AD5629R/AD5669R includes self

installing software on the CD provided. The software is compatible

with Windows® Vista™ (32-bit), Windows 7 (32-bit and 64-bit),

and Windows 8.

Install the software before connecting the SDP-B board to the USB

port of the PC to ensure the SDP-B board is recognized when

connecting to the PC.

To install the software, complete the following steps:

1. Start the Windows operating system and insert the CD.

2. The installation software opens automatically. If it does not

open automatically, run the setup.exe file from the CD.

3. After installation is complete, power up the evaluation

board as described in the Power Supplies section.

4. Connect the evaluation board to the SDP-B board and

connect the SDP-B board to the PC using the USB cable

included in the kit.

5. When the software detects the evaluation board, proceed

through any dialog boxes that appear to finalize the

installation.

EVALUATION BOARD SETUP PROCEDURES

To set up the evaluation board, complete the following steps:

1. Connect the evaluation board to the SDP-B board and

connect the USB cable from the SDP-B board to the PC.

2. Power the SDP-B and evaluation board by connecting

5 V dc to the J2 connector (AVDD and AGND).

EVAL-AD5629RSDZ/EVAL-AD5669RSDZ User Guide UG-867

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EVALUATION BOARD HARDWARE

POWER SUPPLIES

To power the AD5629R/AD5669R evaluation boards, supply

5 V between the AVDD and AGND inputs for the analog supply.

All supplies are decoupled to ground with 10 μF tantalum and

0.1 μF ceramic capacitors.

Table 1. Power Supply Connector

Connector Voltage

J2 Analog power supply, AVDD. For

single-supply operation, supply 5 V.

INPUT SIGNALS

When the SDP-B board controls the evaluation board, the digital

input signals are applied to Connector J3. When the SDP-B board

is not used, apply the digital signals to Connector J6 to

Connector J9.

OUTPUT SIGNALS

The DAC output voltages are available on the SMB connectors,

labeled A to H.

Figure 2. Evaluation Board Block Diagram

AD5669R/

AD5629R

OUT

HADG728

AD7991

SMB CONNECTORS

A TO H

SMB CONNECTORS

J6 TO J9

SDP CONNECTOR

EXT REF REF195

13430-002

UG-867 EVAL-AD5629RSDZ/EVAL-AD5669RSDZ User Guide

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LINK CONFIGURATION OPTIONS

Multiple link options must be set correctly to select the appropriate

operating setup before using the evaluation board. Table 2 describes

the functions of these options.

SETUP CONDITIONS

Before applying power and signals to the evaluation board, ensure

that all links are positioned as required by the operating mode.

The evaluation board can operate in SDP controlled mode to be

used with the SDP-B board, or the evaluation boards can be

used in standalone mode.

Table 2 shows the default positions of the links when the

evaluation board is packaged. When the board is shipped, it is

set up to operate with the SDP-B board in SDP controlled mode.

Table 2. Link Functions

Link No. Function Default Position

LK1 This link selects the source of the A0 pin. B

Position A selects AVDD.

Position B selects GND (default). The software is designed with LK1 in this position.

LK2 This link connects the VOUTA to VOUTF pins of the AD5629R/AD5669R to the input pins of the

demultiplexer so that the DAC output value can be monitored using the on-board ADC.

Inserted

LK3 This link connects the VOUTA to VOUTF pins of the AD5629R/AD5669R to the input pins of the

demultiplexer so the on-board ADC can monitor the DAC output value.

Inserted

LK4 This link connects a 0.1 µF capacitor to AGND on the VREF pin. It is recommended to insert LK4 when

using the internal reference.

Inserted

LK5 This link selects the reference source. B

Position A selects the internal reference as the reference source. The AD5629R/AD5669R must be

written to via the software to turn on the internal reference.

Position B selects the on-board 5 V reference as the reference source.

LK7 This link selects the DAC voltage source. B

Position A selects the AVDD analog circuitry power supply source.

Position B selects the on-board 5 V reference as the power supply source.

LK8 This link sets the RESET pin on the ADG728 demultiplexer. B

Position A allows normal operation of the ADG728.

Position B resets the ADG728.

LK9 to LK14 This link connects the VOUTA to VOUTF pins of the AD5629R/AD5669R to the input pins of ADG728

demultiplexer so that the on-board ADC can monitor the DAC output value.

Inserted

EVAL-AD5629RSDZ/EVAL-AD5669RSDZ User Guide UG-867

Rev. 0 | Page 7 of 14

EVALUATION BOARD CIRCUITRY

The E VA L -AD5629RSDZ/E VA L -AD5669RSDZ evaluation

boards easily test the function and performance of the

AD5629R/AD5669R.

Control of the AD5629R/AD5669R is typically performed by

the SDP-B board, which is attached to Connector J3. The SDP-B

board allows the software provided with the kit to load register

values, set the voltage of the DAC outputs, and write to the

control register of the AD5629R/AD5669R.

When the SDP-B board is not required, the control signals can

be applied to the AD5629R/AD5669R by connecting them to

the relevant SMB Connector J6 to Connector J9.

The DAC output voltages are available on the SMB Connector A to

Connector H.

UG-867 EVAL-AD5629RSDZ/EVAL-AD5669RSDZ User Guide

Rev. 0 | Page 8 of 14

HOW TO USE THE SOFTWARE

STARTING THE SOFTWARE

To run the E VA L -AD5629RSDZ/E VA L-AD5669RSDZ software,

take the following steps:

1. Connect the evaluation board to the SDP-B board and

connect the USB cable from the SDP-B board to the PC.

2. Power the SDP-B board and the evaluation board by

connecting 5 V to Connector J2.

3. Click Start > All Programs > Analog Devices >

AD5629R/AD5669R > AD5629R/AD5669R Evaluation

Software. While the software connects to the evaluation

board, the message in Figure 3 displays.

Figure 3. Connection Message

If the SDP-B board is not connected to the USB port when the

software launches, a connectivity error displays (see Figure 4).

Figure 4. Connectivity Error

Connect the SDP-B board to the USB port of the PC, wait at

least 40 sec for the SDP-B board to boot, click Rescan, and

follow the instructions.

Alternatively, the software can be used without an evaluation

board. The software runs in simulation mode displaying

expected outputs based on the input data. The main window

of the AD5629R/AD5669R evaluation software then opens, as

shown in Figure 5.

Figure 5. AD5629R/AD5669R Evaluation Software Main Window

13430-003

13430-004

13430-005

EVAL-AD5629RSDZ/EVAL-AD5669RSDZ User Guide UG-867

Rev. 0 | Page 9 of 15

SOFTWARE OPERATION

The AD5629R/AD5669R evaluation software allows the user to

program values to the input and DAC registers of each DAC

individually or collectively.

Command Menu

By selecting the appropriate option in the drop-down menu

under Control Menu,you can select Write to Input Register n,

Write to and Update DAC Channel n, Write to Input Register n

Update All (Software LDAC), Power Down/Power Up DAC,

Load Clear Code Register, and Load LDAC Register.

Address Bit

To select which DACs to update, select the appropriate DAC

under Address Bits.

Hardware Control

Set LDAC and CLR high or low by selecting the corresponding

check box under Hardware Pins. This command executes

immediately.

Data Bits

Type the data to be written to the DAC in decimal format.

Write to Part

You must click Write to Par t to write the Data Bits value to

the device.

UG-867 EVAL-AD5629RSDZ/EVAL-AD5669RSDZ User Guide

Rev. 0 | Page 10 of 14

EVALUATION BOARD SCHEMATICS AND ARTWORK

Figure 6. EVAL-AD5629RSDZ/EVAL-AD5669RSDZ Schematic (Page 1)

13430-007

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