ANALOG DEVICES UG-384 Service Manual

Evaluation Board User Guide

UG-384

AD5570

10579-001

AD8675

EXT

+10V

REFIN

PC

USB

PORT

SYSTEM

DEMONSTRATION

PLATFORM BOARD

DGND AGNDS AGND

V

OUT

V

OUT

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

Evaluation Board for the AD5570

16-Bit ±12 V/±15 V Serial Input Voltage Output DAC

FEATURES

Full-featured evaluation board for the AD5570
Link options
PC control in conjunction with the Analog Devices, Inc.,

system demonstration platform

PC software for control

DEVICE DESCRIPTION

The AD5570 is a single 16-bit serial input, voltage output DAC
that operates from supply voltages of ±11.4 V up to ±16.5 V.
INL and DNL are accurate to 1 LSB (maximum).

Complete specifications for the AD5570 are provided in the

AD5570 data sheet, available from Analog Devices, and should

be consulted in conjunction with this user guide when using the
evaluation board.

EVALUATION BOARD DESCRIPTION

The E VA L -AD5570SDZ is a full-featured evaluation board that
is designed to allow the user to easily evaluate all features of the

AD5570 voltage output, 16-bit digital-to-analog converter (DAC).

Components on the AD5570 evaluation board include SMB
connectors for interfacing to other equipment, a 5 V voltage
reference, and a ground force sense. Testpoints are provided on
all of the digital interface signal lines for ease of monitoring.
The user has the option of inserting both a resistive and
capacitive load on the output of the AD5570 at C1 and R1.

The board can be controlled by the system demonstration
platform (SDP) connector (J1). The SDP board allows the
evaluation board to be controlled through the USB port of a
Windows® XP (SP2 or later) or more recent 32-bit or 64-bit
(Vista, Windows 7) PC using the AD5570 evaluation software.

FUNCTIONAL BLOCK DIAGRAM

Figure 1.

PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.

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UG-384 Evaluation Board User Guide

TABLE OF CONTENTS

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

Device Description ........................................................................... 1

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

Functional Block Diagram .............................................................. 1

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

Evaluation Board Hardware ............................................................ 3

Power Supplies .............................................................................. 3

Link Options ................................................................................. 3

REVISION HISTORY

3/12—Revision 0: Initial Versi on

On-Board Connectors ..................................................................3

Evaluation Board Software ...............................................................4

Software Installation .....................................................................4

Software Operation .......................................................................4

Features of the AD5570 Evaluation Board Software ................5

Evaluation Board Schematics and Artwork ...................................6

Ordering Information .................................................................... 10

Bill of Materials ........................................................................... 10

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Evaluation Board User Guide UG-384

VOUT

DAC output connector

LK1

LK1 is used in conjunction with LK2 to select whether the on-board ground force sense buffer is used.

When LK1 and LK2 are removed, the ground force sense buffer is used.

When LK3 is inserted, the on-board reference is selected as the voltage reference source for the AD5570.

When LK3 is removed, an external voltage reference can be applied to Connector VR EF.

EVALUATION BOARD HARDWARE

POWER SUPPLIES

The following external supplies must be provided:

Default Link Option Setup

The default link options are listed in Table 1.

• +11.4 V to +16.5 V between the V

the positive analog supply of the AD5570.

• −11.4 V to −16.5 V between the V

the negative analog supply of the AD5570.

The analog and digital planes are connected at one location,

and AGND inputs for

DD

and AGND inputs for

SS

Table 1. Default Link Options

Link Number Option

LK1 Inserted
LK2 Inserted
LK3 Inserted

close to the AD5570. To avoid ground loop problems, it is
recommended AGND and DGND not be connected elsewhere
in the system.

Each supply is decoupled to the relevant ground plane with
10 µF and 0.1 µF capacitors. Each device supply pin is also
decoupled with a 10 µF and 0.1 µF capacitor pair to the
relevant ground plane.

LINK OPTIONS

ON-BOARD CONNECTORS

There are four connectors on the AD5570 evaluation board
PCB as outlined in Table 2.

Table 2. On-Board Connectors

Connector Function

J1 SDP board connector
J5 Analog power supply connector

The link options on the evaluation board should be set for the
required operating setup before using the board. The functions

VREF External reference voltage input connector

of the link options are described in Tabl e 3.

Table 3. Link Options

Link No. Description

LK2 When LK1 and LK2 are inserted, the ground force sense buffer is not used, the ground pins are connected directly to 0 V, and

the buffer is removed from the ground loop.

LK3 This link is used to select the internal or the external reference.

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UG-384 Evaluation Board User Guide

10579-002

10579-003

EVALUATION BOARD SOFTWARE

SOFTWARE INSTALLATION

The AD5570 evaluation kit includes self-installing software on
a CD. The software is compatible with Windows XP (SP2), Vista,
and Windows 7 (32-bit or 64-bit). If the setup file does not run
automatically, you can run the setup.exe file from the CD.

Install the evaluation software 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 connected
to the PC.

After installation from the CD is complete,

1. Power up the AD5570 evaluation board as described in the

Power Supplies section. Connect the SDP board (via either
Connector A or Connector B) to the AD5570 evaluation
board and then to the USB port of your PC using the
supplied cable.

2. When the evaluation system is detected, proceed through any

dialog boxes that appear. This completes the installation.

SOFTWARE OPERATION

To launch the software, complete the following steps:

1. From the Start menu, select Analog Devices > AD5570 >

AD5570 Evaluation Software. The main window of the
software opens (see Figure 3).

2. If the evaluation system is not connected to the USB port

when the software is launched, a connectivity error is
displayed (see Figure 2). Connect the evaluation board to
the USB port of the PC, wait a few seconds, click Rescan,
and follow the instructions.

Figure 2. Connectivity Error Alert

Figure 3. Main Window

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