Circuit Note

CN-0121

Rev. A | Page 3 of 3

Ω

CH3 200mV

Ω CH4 200mVΩ

CH2 200mV

Ω M20.0ns

CH2

–80V

1

2

3

4

Figure 5. DDS Unfiltered Outputs Phase Aligned Using the Setup in Figure 1.

COMMON VARIATIONS

Analog Devices offers a variety of direct digital synthesizers,

clock distribution chips, and clock buffers to build a DDS-based

clock generator. Refer to www.analog.com/dds and

www.analog.com/clock for more information.

LEARN MORE

AN-823 Application Note, Direct Digital Synthesizers in

Clocking Applications. Analog Devices.

AN-837 Application Note, DDS-Based Clock Jitter Performance

vs. DAC Reconstruction Filter Performance. Analog Devices.

Kester, Walt. 2005. The Data Conversion Handbook. Analog

Devices. Chapters 6 and 7.

Kester, Walt. 2006. High Speed System Applications. Analog

Devices. Chapter 2, “Optimizing Data Converter Interfaces.”

Kester, Walt. 2006. High Speed System Applications. Analog

Devices. Chapter 3, “DACs, DDSs, PLLs, and Clock

Distribution.”

MT-031 Tutorial, Grounding Data Converters and Solving the

Mystery of AGND and DGND. Analog Devices.

MT-085 Tutorial, Fundamentals of Direct Digital Synthesis

(DDS), Analog Devices.

MT-086 Tutorial, Fundamentals of Phase Locked Loops (PLL),

Analog Devices.

MT-101 Tutorial, Decoupling Techniques. Analog Devices.

Data Sheets and Evaluation Boards

AD9910 Data Sheet.

AD9910 Evaluation Board.

AD9520 Data Sheet.

AD9520 Evaluation Board.

ADCLK846 Data Sheet.

ADCLK846 Evaluation Board.

REVISION HISTORY

12/09—Rev. 0 to Rev. A

Changes to Figure 1 ..........................................................................1

10/09—Revision 0: Initial Version

(Continued from first page) "Circuits from the Lab" are intended only for use with Analog Devices products and are the intellectual property of Analog Devices or its licensors. While you may

use the "Circuits from the Lab" in the design of your product, no other license is granted by implication or otherwise under any patents or other intellectual property by application or use of

the "Circuits from the Lab". Information furnished by Analog Devices is believed to be accurate and reliable. However, "Circuits from the Lab" are supplied "as is" and without warranties of any

kind, express, implied, or statutory including, but not limited to, any implied warranty of merchantability, noninfringement or fitness for a particular purpose and no responsibility is assumed

by Analog Devices for their use, nor for any infringements of patents or other rights of third parties that may result from their use. Analog Devices reserves the right to change any "Circuits

from the Lab" at any time without notice, but is under no obligation to do so. Trademarks and registered trademarks are the property of their respective owners.

©2009 Analog Devices, Inc. All rights reserved. Trademarks and

registered trademarks are the property of their respective owners.

CN08514-0-12/09(A)