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AD9856 Datasheet(PDF) 3 Page - Analog Devices

Part # AD9856
Description  CMOS 200 MHz Quadrature Digital Upconverter
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD9856 Datasheet(HTML) 3 Page - Analog Devices

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AD9856
Rev. C | Page 2 of 36
TABLE OF CONTENTS
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 5
Explanation of Test Levels ........................................................... 5
ESD Caution.................................................................................. 5
Pin Configuration and Function Descriptions............................. 6
Typical Performance Characteristics ............................................. 8
Typical Modulated Output Spectral Plots ................................. 8
Typical Single-Tone Output Spectral Plots ............................... 9
Typical Narrow-Band SFDR Spectral Plots ............................ 10
Typical Phase Noise Spectral Plots........................................... 10
Typical Plots of Output Constellations.................................... 11
Power Consumption .................................................................. 12
Serial Control Bus Register ........................................................... 13
Register Bit Definitions.............................................................. 14
Theory of Operation ...................................................................... 15
Modulation Mode Operation ................................................... 15
Input Word Rate (fW) vs. REFCLK Relationship .................... 16
I/Q Data Synchronization ......................................................... 16
Half-Band Filters (HBFs) .......................................................... 20
Cascaded Integrator Comb (CIC) Filter.................................. 21
Digital Quadrature Modulator ................................................. 23
Inverse Sinc Filter (ISF) ............................................................. 24
Direct Digital Synthesizer Function ........................................ 25
D/A Converter ............................................................................ 25
Reference Clock Multiplier ....................................................... 26
Throughput and Latency........................................................... 26
Control Interface ........................................................................ 26
General Operation of the Serial Interface............................... 26
Instruction Byte .......................................................................... 27
Serial Interface Port Pin Descriptions ..................................... 28
MSB/LSB Transfers .................................................................... 28
Notes on Serial Port Operation ................................................ 28
Programming/Writing the AD8320/AD8321 Cable Driver
Amplifier Gain Control ............................................................. 30
Understanding and Using Pin-Selectable Modulator Profiles
....................................................................................................... 31
Power Dissipation Considerations........................................... 31
AD9856 Evaluation Board ........................................................ 32
Support ........................................................................................ 32
Outline Dimensions ....................................................................... 35
Ordering Guide .......................................................................... 35
REVISION HISTORY
1/05—Rev. B to Rev. C
Updated Format..................................................................Universal
Changes to Table 2............................................................................ 5
Changes to Input Word Rate (fw) vs. REFCLK
Relationship Section.................................................................. 16
Changes to Cascaded Integrator Comb (CIC) Filter Section ... 21
Updates to Direct Digital Synthesizer Function Section........... 25
Added Support Section.................................................................. 32
Updated Outline Dimensions ....................................................... 35
Changes to Ordering Guide .......................................................... 35
9/99—Rev. A to Rev. B


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