AD9520 datasheet(1/3 Pages) AD

номер детали	AD9520

подробное описание детали	Synchronizing Multiple AD9910 1 GSPS Direct Digital Synthesizers

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Circuit Note

CN-0121

Circuit Designs Using Analog Devices Products

Apply these product pairings quickly and with confidence.

For more information and/or support call 1-800-AnalogD

(1-800-262-5643) or visit www.analog.com/circuit.

Devices Connected/Referenced

AD9910

1 GSPS Direct Digital Synthesizer (DDS)

AD9520

Clock Generator and Distribution IC

ADCLK846

High Speed LVDS Clock Fanout Buffer

Synchronizing Multiple AD9910 1 GSPS Direct Digital Synthesizers

Rev. A

“Circuits from the Lab” from Analog Devices have been designed and built by Analog Devices

engineers. Standard engineering practices have been employed in the design and construction of

eachcircuit,andtheirfunctionandperformance havebeentestedandverifiedinalabenvironment

atroomtemperature.However,youaresolelyresponsible fortestingthe circuit anddetermining its

suitability and applicability for your use and application. Accordingly, in no event shall Analog

Devices be liable for direct, indirect, special, incidental, consequential or punitive damages due to

anycausewhatsoeverconnectedtotheuseofany“CircuitfromtheLab”. (Continuedonlastpage)

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

www.analog.com

Fax: 781.461.3113

CIRCUIT FUNCTION AND BENEFITS

Synchronization of multiple DDS devices allows precise digital

tuning control of the phase and amplitude across multiple

frequency carriers. This type of control is useful in radar

applications and quadrature (I/Q) upconversion for side-band

suppression.

The circuit in Figure 1 demonstrates how to synchronize four

AD9910 1 GSPS, DDS chips using the AD9520 clock generator

and the ADCLK846 clock fanout buffer. The result is precise

phase alignment between the clock and output signals of four

AD9910 devices.

AD9910

(MASTER)

+ SYNC_IN

– SYNC_IN

– SYNC_OUT

SYNC_CLK

AOUT

CLK1

CLOCK

CMOS

LEVELS

CMOS

LEVEL

PECL

LEVELS

REF CLK

IO_UPDATE

AD9910

(SLAVE)

REF CLK

+ SYNC_IN

– SYNC_IN

+ SYNC_IN

– SYNC_IN

+ SYNC_IN

– SYNC_IN

SYNC_CLK

AOUT

IO_UPDATE

AD9910

(SLAVE)

REF CLK

SYNC_CLK

AOUT

IO_UPDATE

AD9910

(SLAVE)

REF CLK

SYNC_CLK

AOUT

IO_UPDATE

+ SYNC_OUT

CH1

CH2

CH3

CH4

DG2020A

DATA

GENERATOR

AD9520

Q0

Q1

Q2

Q3

Q4

ADCLK846

Q0

Q1

Q2

Q3

LVDS

LEVELS

LVDS

LEVELS

Figure 1. Setup for Synchronization of Multiple AD9910’s (Simplified Schematic: Decoupling, Power, and All Connections Not Shown)

Аналогичный номер детали - AD9520

производитель	номер детали	датащи	подробное описание детали
Analog Devices	AD9520-0	1Mb / 84P	12 LVPECL/24 CMOS Output Clock Generator with Integrated 2.8 GHz VCO REV. 0
	AD9520-0	1Mb / 80P	12 LVPECL/24 CMOS Output Clock Generator 9/2016-Rev. A to Rev. B
	AD9520-0/PCBZ	1Mb / 84P	12 LVPECL/24 CMOS Output Clock Generator with Integrated 2.8 GHz VCO REV. 0
	AD9520-0BCPZ	1Mb / 84P	12 LVPECL/24 CMOS Output Clock Generator with Integrated 2.8 GHz VCO REV. 0
	AD9520-0BCPZ-REEL7	1Mb / 84P	12 LVPECL/24 CMOS Output Clock Generator with Integrated 2.8 GHz VCO REV. 0

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Аналогичное описание - AD9520

производитель	номер детали	датащи	подробное описание детали
Analog Devices	AD9858	1Mb / 32P	1 GSPS Direct Digital Synthesizer
	AD9910	488Kb / 13P	1 GSPS 14-Bit, 3.3V CMOS Direct Digital Synthesizer
	AD9912	113Kb / 3P	1 GSPS Direct Digital Synthesizer w/ 14-bit DAC 6/10-Rev. E to Rev. F
	AD9910	1Mb / 60P	1 GSPS, 14-Bit, 3.3 V CMOS Direct Digital Synthesizer 5/07-Revision 0
National Semiconductor ...	ADC12D1XXX	375Kb / 10P	Synchronizing Multiple GSPS ADCs in a System: The AutoSync Feature
Analog Devices	AD9912ABCPZ	649Kb / 40P	1 GSPS Direct Digital Synthesizer with 14-Bit DAC Rev. F
	AD9858BSVZ	838Kb / 32P	1 GSPS Direct Digital Synthesizer REV. C
	AD9912BCPZ	649Kb / 40P	1 GSPS Direct Digital Synthesizer with 14-Bit DAC Rev. F
	AD9858	838Kb / 32P	1 GSPS Direct Digital Synthesizer REV. C
	AD9957	1Mb / 61P	1 GSPS Quadrature Digital Upconverter 4/2018-Rev. E to Rev. F

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