ADF5901 Data Sheet
Rev. A | Page 2 of 26
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Timing Specifications .................................................................. 4
Absolute Maximum Ratings ............................................................ 6
ESD Caution .................................................................................. 6
Pin Configuration and Function Descriptions ............................. 7
Typical Performance Characteristics ............................................. 9
Theory of Operation ...................................................................... 11
Reference Input Section ............................................................. 11
RF INT Divider ........................................................................... 11
INT, FRAC, and R Relationship ............................................... 11
R Counter .................................................................................... 11
Input Shift Register..................................................................... 11
Program Modes .......................................................................... 11
Register Maps .................................................................................. 13
Register 0 ..................................................................................... 15
Register 1 ..................................................................................... 16
Register 2 ..................................................................................... 17
Register 3 ..................................................................................... 18
Register 4 ..................................................................................... 19
Register 5 ..................................................................................... 19
Register 6 ..................................................................................... 20
Register 7 ..................................................................................... 21
Register 8 ..................................................................................... 22
Register 9 ..................................................................................... 22
Register 10 ................................................................................... 23
Register 11 ................................................................................... 23
Initialization Sequence .............................................................. 23
Recalibration Sequence ............................................................. 23
Temperature Sensor ................................................................... 24
RF Synthesis: a Worked Example ............................................. 24
Applications Information .............................................................. 25
Application of the ADF5901 in FMCW Radar ...................... 25
Outline Dimensions ....................................................................... 26
Ordering Guide .......................................................................... 26
Automotive Products ................................................................. 26
REVISION HISTORY
7/2016—Rev. 0 to Rev. A
Changes to Applications Section .................................................... 1
Changes to Initialization Sequence Section and Recalibration
Sequence Section ............................................................................ 23
12/2015—Revision 0: Initial Version
