ad9856-pcb Analog Devices, Inc., ad9856-pcb Datasheet - Page 2

• Manufacturer Part Number: ad9856-pcb
• Description: Cmos 200 Mhz Quadrature Digital Upconverter
• Manufacturer: Analog Devices, Inc.

AD9856
TABLE OF CONTENTS
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 5
Pin Configuration and Function Descriptions............................. 6
Typical Performance Characteristics ............................................. 8
Serial Control Bus Register ........................................................... 13
Theory of Operation ...................................................................... 15
REVISION HISTORY
1/05—Rev. B to Rev. C
Updated Format..................................................................Universal
Changes to Table 2............................................................................ 5
Changes to Input Word Rate (f
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
Explanation of Test Levels ........................................................... 5
ESD Caution.................................................................................. 5
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
Register Bit Definitions.............................................................. 14
Modulation Mode Operation ................................................... 15
Input Word Rate (f
I/Q Data Synchronization ......................................................... 16
Half-Band Filters (HBFs) .......................................................... 20
Cascaded Integrator Comb (CIC) Filter.................................. 21
Relationship Section.................................................................. 16
W
) vs. REFCLK Relationship .................... 16
w
) vs. REFCLK
Rev. C | Page 2 of 36
Outline Dimensions ....................................................................... 35
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
Ordering Guide .......................................................................... 35