Datasheet

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Evaluation Board for Dual, 16-Bit,

Serial Input, Voltage-Output DAC

EVAL-AD5663REB

Rev. 0

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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

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Tel: 781.329.4700 www.analog.com

FEATURES

Full-featured evaluation board for the AD5663R

Allows evaluation of the AD5663 part

On-board reference

On-board ADC for voltage readback

Various link options

Direct hookup to USB port of PC

PC software for control of DACs

GENERAL DESCRIPTION

This data sheet describes the evaluation board for the AD5663R

dual 16-bit DAC. The AD5663R operates from a single 2.7 V to

5.5 V supply. The part incorporates an internal 1.25 V or 2.5 V

on-chip reference to give an output voltage span of 2.5 V or 5 V,

respectively. The on-chip reference is off at power-up allowing

for the use of an external reference (the REF195 on this

evaluation board). The part must be written to after power-up

to turn on the internal reference.

Complete specifications for the AD5663R can be found in the

data sheet available from Analog Devices, Inc., and should be

consulted in conjunction with this data sheet when using the

evaluation board.

This board can also be used to evaluate the AD5663 part. Full

data on the AD5663 can be found in the data sheet available

from Analog Devices.

The evaluation board interfaces to the USB port of an IBM®-

compatible PC. Software is available with the evaluation board

allowing the user to easily program the AD5663R.

FUNCTIONAL BLOCK DIAGRAM

ADC

POWER SUPPLY INPUTS

USB CONNECTOR

SMB CONNECTORS

CONTROLLER

CY7C68013

5V VOLTAGE

REFERENCE

EXT REF IN/

INT REF OUT

REF

AD5663R

I/O

ADG738

8:1 MUX

OUT

06089-001

Figure 1.

Summary of content (12 pages)

PAGE 1
Evaluation Board for Dual, 16-Bit, Serial Input, Voltage-Output DAC EVAL-AD5663REB for the use of an external reference (the REF195 on this evaluation board). The part must be written to after power-up to turn on the internal reference.
PAGE 2
EVAL-AD5663REB TABLE OF CONTENTS Features .............................................................................................. 1 Installing the Software ..................................................................4 General Description ......................................................................... 1 Software Operation .......................................................................4 Functional Block Diagram ..............................................................
PAGE 3
EVAL-AD5663REB EVALUATION BOARD HARDWARE POWER SUPPLIES LINK OPTIONS To power the EVAL-AD5663REB, supply 5.5 V between the AVDD and AGND inputs for the analog supply of the AD5663R (J6). Alternatively, placing Link 6 in Position B powers the analog circuitry from the USB port (default setting). A number of link and switch options on the evaluation board should be set for the required operating setup before using the board. The functions of these link options are described in detail in Table 2.
PAGE 4
EVAL-AD5663REB EVALUATION BOARD SOFTWARE command bits, the address bits and the data bits by clicking the appropriate option button under each section. INSTALLING THE SOFTWARE The AD5663R evaluation kit includes self-installing software on CD-ROM. The software is compatible with Microsoft® Windows® 2000 and Windows® XP. Command Bits 1. To select a command to program the part, click the appropriate option button under the Command Bits section.
PAGE 5
06089-002 EVAL-AD5663REB Figure 2. AD5663R Evaluation Software Main Window Reference Setup 06089-003 The AD5663R internal reference is turned off at power-up by default, allowing the use of an external reference. To turn on (or turn off) the internal reference, click REF Setup Register in the Command Bits section. This allows you to program the bit in the reference setup register for the required mode of operation, as shown in Figure 3. Then click Write to Part. Figure 3.
PAGE 6
EVAL-AD5663REB 06089-004 EVALUATION BOARD SCHEMATICS AND ARTWORK Figure 4. Schematic of Controller Circuitry Rev.
PAGE 7
EVAL-AD5663REB 06089-005 Figure 5. Schematic of AD5663R Circuitry Rev.
PAGE 8
06089-006 EVAL-AD5663REB 06089-007 Figure 6. Component Placement Drawing Figure 7. Component Side PCB Drawing Rev.
PAGE 9
06089-008 EVAL-AD5663REB Figure 8. Solder Side PCB Drawing Rev.
PAGE 10
EVAL-AD5663REB ORDERING INFORMATION COMPONENT LISTING Table 3.
PAGE 11
EVAL-AD5663REB NOTES Rev.