ADF4155

Data Sheet

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

General Description ......................................................................... 1

Functional Block Diagram .............................................................. 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Timing Characteristics ................................................................ 5

Absolute Maximum Ratings............................................................ 6

Transistor Count........................................................................... 6

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

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

Typical Performance Characteristics ............................................. 9

Circuit Description......................................................................... 12

Reference Input Section............................................................. 12

RF N Counter.............................................................................. 12

Phase Frequency Detector and Charge Pump ........................... 13

MUXOUT and Lock Detect...................................................... 13

Input Shift Registers................................................................... 13

Program Modes .......................................................................... 13

Output Stage................................................................................ 14

Register Maps.................................................................................. 15

Register 0 ..................................................................................... 17

Register 1 ..................................................................................... 18

Register 2 ..................................................................................... 19

Register 3 ..................................................................................... 19

Register 4 ..................................................................................... 20

Register 5 ..................................................................................... 22

Register 6 ..................................................................................... 23

Register 7 ..................................................................................... 24

Register 8 ..................................................................................... 25

Register Initialization Sequence ............................................... 26

RF Synthesizer—A Worked Example ...................................... 26

Reference Doubler and Reference Divider ............................. 27

Cycle Slip Reduction for Faster Lock Times........................... 27

Spurious Optimization .............................................................. 27

Spur Mechanisms ....................................................................... 27

Applications Information .............................................................. 28

Local Oscillator with RF Buffer................................................ 28

Outline Dimensions....................................................................... 29

Ordering Guide .......................................................................... 29

REVISION HISTORY

4/14—Revision 0: Initial Version

Rev. 0 | Page 2 of 32