ADF4169

Data Sheet

Rev. 0 | Page 2 of 36

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

Thermal Resistance ...................................................................... 6

ESD Caution.................................................................................. 6

Pin Configuration and Function Descriptions............................. 7

Typical Performance Characteristics ............................................. 8

Theory of Operation ...................................................................... 10

Reference Input Section............................................................. 10

RF Input Stage............................................................................. 10

RF INT Divider........................................................................... 10

25-Bit Fixed Modulus ................................................................ 10

INT, FRAC, and R Counter Relationship................................ 10

R Counter .................................................................................... 10

Phase Frequency Detector and Charge Pump ........................... 11

MUXOUT and Lock Detect...................................................... 11

Input Shift Register..................................................................... 11

Program Modes .......................................................................... 11

Register Maps.................................................................................. 12

FRAC/INT Register (R0) Map.................................................. 14

LSB FRAC Register (R1) Map................................................... 15

R Divider Register (R2) Map .................................................... 16

Function Register (R3) Map...................................................... 18

Clock Register (R4) Map ........................................................... 20

Deviation Register (R5) Map .................................................... 22

Step Register (R6) Map.............................................................. 23

Delay Register (R7) Map ........................................................... 24

Applications Information .............................................................. 25

Initialization Sequence .............................................................. 25

RF Synthesizer Worked Example ............................................. 25

Reference Doubler...................................................................... 25

Cycle Slip Reduction for Faster Lock Times........................... 25

Modulation.................................................................................. 26

Waveform Generation ............................................................... 26

Waveform Deviations and Timing........................................... 27

Single Ramp Burst...................................................................... 27

Single Triangular Burst.............................................................. 27

Single Sawtooth Burst................................................................ 27

Continuous Sawtooth Ramp..................................................... 27

Continuous Triangular Ramp................................................... 27

FMCW Radar Ramp Settings Worked Example...................... 27

Activating the Ramp .................................................................. 28

Other Waveforms ....................................................................... 28

Ramp Complete Signal to MUXOUT ..................................... 31

External Control of Ramp Steps............................................... 31

Interrupt Modes and Frequency Readback ............................ 31

Fast Lock Mode .......................................................................... 33

Spur Mechanisms ....................................................................... 33

Filter Design Using ADIsimPLL............................................... 34

PCB Design Guidelines for the Chip Scale Package.............. 34

Application of the ADF4169 in FMCW Radar ...................... 35

Outline Dimensions....................................................................... 36

Ordering Guide .......................................................................... 36

Automotive Products................................................................. 36

REVISION HISTORY

7/15—Revision 0: Initial Version