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AD9834 Datasheet(PDF) 2 Page - Analog Devices

Part # AD9834
Description  20 mW Power, 2.3 V to 5.5 V,75 MHz Complete DDS
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD9834 Datasheet(HTML) 2 Page - Analog Devices

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AD9834
Rev. B | Page 2 of 32
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Timing Characteristics ................................................................ 5
Absolute Maximum Ratings............................................................ 6
ESD Caution.................................................................................. 6
Pin Configuration and Function Descriptions............................. 7
Typical Performance Characteristics ............................................. 9
Terminology .................................................................................... 13
Theory of Operation ...................................................................... 14
Circuit Description......................................................................... 15
Numerically Controlled Oscillator Plus Phase Modulator ... 15
SIN ROM ..................................................................................... 15
Digital-to-Analog Converter .................................................... 15
Comparator ................................................................................. 15
Regulator...................................................................................... 16
Functional Description .................................................................. 17
Serial Interface ............................................................................ 17
Powering Up the AD9834 ......................................................... 17
Latency......................................................................................... 17
Control Register ......................................................................... 17
Frequency and Phase Registers ................................................ 19
Writing to a Frequency Register............................................... 20
Writing to a Phase Register....................................................... 20
RESET Function ......................................................................... 20
SLEEP Function.......................................................................... 20
Sign Bit Out Pin.......................................................................... 21
The IOUT and IOUTB Pins...................................................... 21
Applications..................................................................................... 22
Grounding and Layout .................................................................. 25
Interfacing to Microprocessors..................................................... 26
AD9834 to ADSP-21xx Interface ............................................. 26
AD9834 to 68HC11/68L11 Interface....................................... 26
AD9834 to 80C51/80L51 Interface .......................................... 27
AD9834 to DSP56002 Interface ............................................... 27
Evaluation Board ............................................................................ 28
Using the AD9834 Evaluation Board....................................... 28
Prototyping Area ........................................................................ 28
XO vs. External Clock................................................................ 28
Power Supply............................................................................... 28
Bill of Materials........................................................................... 30
Outline Dimensions ....................................................................... 31
Ordering Guide .......................................................................... 31
REVISION HISTORY
4/10—Rev. A to Rev. B
Changes to Comparator Section................................................... 15
Added Figure 28.............................................................................. 16
Changes to Serial Interface Section.............................................. 17
8/06—Rev. 0 to Rev. A
Updated Format..................................................................Universal
Changed to 75 MHz Complete DDS................................Universal
Changes to Features Section............................................................ 1
Changes to Table 1............................................................................ 4
Changes to Table 2............................................................................ 6
Changes to Table 3............................................................................ 8
Added Figure 10, Figures Renumbered Sequentially ...................9
Added Figure 16 and Figure 17, Figures Renumbered
Sequentially ..................................................................................... 10
Changes to Table 6.......................................................................... 19
Changes to Writing a Frequency Register Section..................... 20
Changes to Figure 29...................................................................... 21
Changes to Table 19 ....................................................................... 30
Changes to Figure 38...................................................................... 28
2/03—Revision 0: Initial Version


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