ADF4206/ADF4208

Rev. A | Page 2 of 24

TABLE OF CONTENTS

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

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

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

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

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

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

Timing Specifications .................................................................. 5

Timing Diagram ........................................................................... 5

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

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

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

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

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

Circuit Description......................................................................... 11

Reference Input Section............................................................. 11

RF Input Stage............................................................................. 11

Prescaler....................................................................................... 11

A and B Counters ....................................................................... 11

Pulse Swallow Function............................................................. 11

R Counter .................................................................................... 11

Phase Frequency Detector (PFD) and Charge Pump............ 12

MUXOUT and Lock Detect...................................................... 12

Lock Detect ................................................................................. 12

Input Shift Register .................................................................... 12

Program Modes .............................................................................. 18

Power-Down ............................................................................... 18

IF Section (RF2) ......................................................................... 18

RF Section (RF1) ........................................................................ 19

Applications Section....................................................................... 20

Local Oscillator for GSM Handset Receiver........................... 20

Local Oscillator for WCDMA Receiver .................................. 21

Interfacing ....................................................................................... 22

ADuC812 Interface .................................................................... 22

ADSP-2181 Interface ................................................................. 22

Outline Dimensions ....................................................................... 23

Ordering Guide .......................................................................... 24

REVISION HISTORY

2/06—Rev. 0 to Rev. A

Updated Format..................................................................Universal

Deleted ADF4207 ...............................................................Universal

Changes to Table 3............................................................................ 6

Changes to Function Description .................................................. 7

Changes to Table 4............................................................................ 7

Changes to Figure 22 Caption....................................................... 12

Changes to Pulse Swallow Function ............................................ 13

Changes to Figure 29...................................................................... 15

Changes to Figure 31...................................................................... 17

Updated Outline Dimensions ....................................................... 25

Changes to Ordering Guide .......................................................... 25

3/01—Revision 0: Initial Version