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AD9864 数据手册 - ADI（亚德诺）
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中频数字化子系统 IF Digitizing Subsystem
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AD9864数据手册
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AD9864
TABLE OF CONTENTS
General Description......................................................................... 3
AD9864 Specifications..................................................................... 4
Digital Specifications........................................................................ 6
Absolute Maximum Ratings............................................................ 7
Thermal Resistance ...................................................................... 7
Pin Configuration and Functional Descriptions.......................... 8
Definition of Specifications/Test Methods ............................... 9
Typical Performance Characteristics ........................................... 10
Serial Peripheral Interface (SPI) ............................................... 15
Theory of Operation ...................................................................... 17
Serial Port Interface (SPI).......................................................... 17
Synchronous Serial Interface (SSI)........................................... 18
Syncronization Using SYNCB .................................................. 22
Interfacing to DSPs..................................................................... 22
Power Control............................................................................. 23
LO Synthesizer............................................................................ 23
Fast Acquire Mode...................................................................... 24
Clock Synthesizer ....................................................................... 24
IF LNA/Mixer ............................................................................. 26
Band-Pass ∑-∆ ADC .................................................................. 27
Decimation Filter ....................................................................... 29
Variable Gain Amplifier Operation With Automatic Gain
Control......................................................................................... 30
Variable Gain Control................................................................ 31
Automatic Gain Control (AGC)............................................... 32
System Noise Figure (NF) Versus VGA (or AGC) Control .. 34
Applications Considerations..................................................... 35
Spurious Responses.................................................................... 37
External Passive Component Requirements .......................... 37
Applications ................................................................................ 38
Layout Example, Evaluation Board, and Software ................. 42
Outline Dimensions....................................................................... 43
ESD Caution................................................................................ 43
Ordering Guide .......................................................................... 43
REVISION HISTORY
Revision 0: Initial Version
Rev. 0 | Page 2 of 44
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