ADF4351BCPZ AD [Analog Devices], ADF4351BCPZ Datasheet - Page 2

• Manufacturer Part Number: ADF4351BCPZ
• Description: Wideband Synthesizer
• Manufacturer: AD [Analog Devices]

ADF4351
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 6
Pin Configuration and Function Descriptions ............................. 7
Typical Performance Characteristics ............................................. 9
Circuit Description ......................................................................... 11
Register Maps .................................................................................. 14
REVISION HISTORY
5/12—Revision 0: Initial Version
Timing Characteristics ................................................................ 5
Transistor Count ........................................................................... 6
Thermal Resistance ...................................................................... 6
ESD Caution .................................................................................. 6
Reference Input Section ............................................................. 11
RF N Divider ............................................................................... 11
Phase Frequency Detector (PFD) and Charge Pump ............ 11
MUXOUT and Lock Detect ...................................................... 12
Input Shift Registers ................................................................... 12
Program Modes .......................................................................... 12
VCO.............................................................................................. 12
Output Stage ................................................................................ 13
Register 0 ..................................................................................... 18
Rev. 0 | Page 2 of 28
Applications Information .............................................................. 25
Outline Dimensions ....................................................................... 28
Register 1 ..................................................................................... 18
Register 2 ..................................................................................... 18
Register 3 ..................................................................................... 19
Register 4 ..................................................................................... 20
Register 5 ..................................................................................... 20
Register Initialization Sequence ............................................... 20
RF Synthesizer—A Worked Example ...................................... 21
Reference Doubler and Reference Divider ............................. 21
12-Bit Programmable Modulus ................................................ 21
Cycle Slip Reduction for Faster Lock Times ........................... 22
Spurious Optimization and Fast Lock ..................................... 22
Fast Lock Timer and Register Sequences ................................ 22
Fast Lock Example ..................................................................... 22
Fast Lock Loop Filter Topology ................................................ 23
Spur Mechanisms ....................................................................... 23
Spur Consistency and Fractional Spur Optimization ........... 24
Phase Resync ............................................................................... 24
Direct Conversion Modulator .................................................. 25
Interfacing to the ADuC70xx and the ADSP-BF527 ............. 26
PCB Design Guidelines for a Chip Scale Package ................. 26
Output Matching ........................................................................ 27
Ordering Guide .......................................................................... 28
Data Sheet