ADRF6850

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 Characteristics ................................................................ 5

Absolute Maximum Ratings............................................................ 7

ESD Caution.................................................................................. 7

Pin Configuration and Function Descriptions............................. 8

Typical Performance Characteristics ........................................... 10

Theory of Operation ...................................................................... 18

Overview...................................................................................... 18

PLL Synthesizer and VCO......................................................... 18

Quadrature Demodulator.......................................................... 20

Variable Gain Amplifier (VGA) ............................................... 20

I2C Interface ................................................................................ 20

SPI Interface................................................................................ 22

Program Modes .......................................................................... 24

Register Map ................................................................................... 26

Register Map Summary ............................................................. 26

Register Bit Descriptions........................................................... 27

Suggested Power-Up Sequence..................................................... 30

Initial Register Write Sequence ................................................ 30

Evaluation Board ............................................................................ 31

General Description................................................................... 31

Hardware Description ............................................................... 31

PCB Schematic............................................................................ 33

PCB Artwork............................................................................... 34

Bill of Materials........................................................................... 35

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

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

REVISION HISTORY

10/10—Revision 0: Initial Version