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EVAL-CN-304-SDZ Evaluation Board User Guide

UG-266

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

AD9834

20 mW Power, 2.3 V to 5.5 V, 75 MHz Complete DDS by Using

the

EVAL-CN-304-SDZ

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

Rev. B | Page 1 of 12

FEATURES

Full featured evaluation board (

EVAL-CN-304-SDZ

) for the

AD9834

Graphic user interface software for board control and data

analysis

Connector to the

EVAL-SDP-CB1Z

System Demonstration

Platform (SDP) board

Various power supply and reference link options

APPLICATIONS

Biomedical sensors
Bioelectrical impedance analysis
Electrochemical analysis
Impedance spectroscopy
Complex impedance measurement
Nondestructive testing

GENERAL DESCRIPTION

The

AD9834

is a 75 MHz, low power DDS device capable of

producing high performance sine and triangular outputs. It
also has an on-board comparator that allows a square wave to
be produced for clock generation. Consuming only 20 mW of
power at 3 V makes the

AD9834

an ideal candidate for power-

sensitive applications.
The

EVAL-CN-304-SDZ

board is used in conjunction with a

EVAL-SDP-CB1Z

board available from Analog Devices, Inc. The

USB to SPI communication to the

AD9834

is completed using

this Blackfin®

based development board.

A high performance, on-board 75 MHz trimmed general oscillator
is available to use as the master clock for the

AD9834

system.

Various links and SMB connectors are also available on the

EVAL-CN-304-SDZ

board to maximize the usability.

Complete specifications for the

AD9834

are provided in the

AD9834

data sheet, available from Analog Devices. Consult the

AD9834

data sheet in conjunction with this user guide when

using the evaluation board.

FUNCTIONAL BLOCK DIAGRAM

SCLK SDATA

FSYNC

IOUTB

MCLK

AD9834

FSELECT

PSELECT

RESET

EVAL-SDP-CB1Z

ADP3301

USB

SPORT

GPIO

IOUT

MCLK XO

09791-

001

Figure 1.

Содержание EVAL-CN-304-SDZ

Страница 1: ...f producing high performance sine and triangular outputs It also has an on board comparator that allows a square wave to be produced for clock generation Consuming only 20 mW of power at 3 V makes the AD9834 an ideal candidate for power sensitive applications The EVAL CN 304 SDZ board is used in conjunction with a EVAL SDP CB1Z board available from Analog Devices Inc The USB to SPI communication t...

Страница 2: ... 304 SDZ Throughout Changes to Installing the Software Section 3 Changes to Table 1 and Figure 4 4 Deleted Setting up the Digital Interface Section and Figure 5 Renumbered Sequentially 5 Added Operating the Software Section 5 Changes to Figure 5 to Figure 8 and Programming Method Hardware or Software Section 5 Changes to Waveform Options Section Power Down Options Section and Figure 9 to Figure 14...

Страница 3: ...e PC 2 Start the Windows operating system and install the software from the EVAL CN 0304 SDZ evaluation kit CD 3 After installation of the software and drivers is complete plug the EVAL CN 304 SDZ into the EVAL SDP CB1Z board and then plug the EVAL SDP CB1Z board into the PC using the USB cable included in the box 4 When the software detects the evaluation board proceed through any dialog boxes th...

Страница 4: ...04 SDZ evaluation software then opens as shown in Figure 4 09791 002 Figure 3 Pop Up Window Error Table 1 Default Setup for Link Positions Link No Position Function LK1 A External DVDD supply powers the on board oscillator B default On board linear regulator selected to supply power to the general oscillator LK2 A Digital block powered through the DVDD external connector B default 3 3 V digital su...

Страница 5: ...bits are used to control these functions 09791 006 Figure 6 Programming Method Loading Frequency and Phase Registers The desired output frequency and output phase can be loaded using the inputs shown in Figure 7 Either the FREQ 0 register or the FREQ 1 register can be loaded with frequency data The frequency data is loaded in megahertz and the equivalent hexadecimal code is shown to the right once...

Страница 6: ...rogramming method is selected see Figure 6 the FSELECT FSEL0 PSELECT PSEL0 RESET and SLEEP pin functions can be toggled The GPIO outputs on the EVAL SDP CB1Z board control these pin functions For example frequency data can be loaded to the FREQ 0 register and the FREQ 1 register and the output can be toggled by the FSELECT pin that is 2FSK functionality 09791 011 Figure 11 GPIO Hardware Pin Contro...

Страница 7: ...75 MHz oscillator 4 Ensure that all links are in the correct locations see Table 1 5 Select the FREQ 1 register 6 Load a 1 MHz excitation frequency and press Enter The output should appear on the IOUT and IOUTB outputs on the evaluation board For the FREQ 0 register do the following 1 Select the FREQ 0 register 2 Load the FREQ 0 register with 2 MHz 3 Press Enter For the FREQ 1 register select the ...

Страница 8: ...UG 266 EVAL CN 304 SDZ Evaluation Board User Guide Rev B Page 8 of 12 EVALUATION BOARD SCHEMATICS AND LAYOUT 09791 016 Figure 16 EVAL CN 304 SDZ Schematic Part A ...

Страница 9: ...EVAL CN 304 SDZ Evaluation Board User Guide UG 266 Rev B Page 9 of 12 09791 017 Figure 17 EVAL CN 304 SDZ Schematic Part B 09791 018 Figure 18 EVAL CN 304 SDZ Component Side View Layer 1 ...

Страница 10: ... EVAL CN 304 SDZ Evaluation Board User Guide Rev B Page 10 of 12 09791 020 Figure 19 EVAL CN 304 SDZ Component Side View Silkscreen 09791 019 Figure 20 EVAL CN 304 SDZ Component Side View Layer 2 Solder Side ...

Страница 11: ... terminal blocks 5 mm pitch Campden CTB5000 2 LK1 LK2 LK4 3 pin SIL header and shorting links Harwin M20 9990345 and M7567 05 LK3 2 pin SIL header and shorting link Harwin M20 9990246 L1 270 nH 0603 Murata LQM18NNR27K00D L2 390 nH 0603 Murata LQM18NNR39K00D L3 470 nH 0603 Murata LQM18NNR47K00D L4 Bead 600 Ω at 100 MHz Murata BLM31AJ601SN1L R11 R21 R81 R26 10 kΩ 1 0603 SMD resistors MultiComp MC 0 ...

Страница 12: ...oprietary information of ADI Customer may not disclose or transfer any portion of the Evaluation Board to any other party for any reason Upon discontinuation of use of the Evaluation Board or termination of this Agreement Customer agrees to promptly return the Evaluation Board to ADI ADDITIONAL RESTRICTIONS Customer may not disassemble decompile or reverse engineer chips on the Evaluation Board Cu...

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