adf7012 Analog Devices, Inc., adf7012 Datasheet - Page 2

• Manufacturer Part Number: adf7012
• Description: Multichannel Ism Band Fsk/gfsk/ook/gook/ask Transmitter
• Manufacturer: Analog Devices, Inc.

ADF7012
TABLE OF CONTENTS
Specifications..................................................................................... 3
Timing Characteristics..................................................................... 5
Absolute Maximum Ratings............................................................ 6
Pin Configuration and Function Descriptions............................. 7
Typical Performance Characteristics ............................................. 8
Circuit Description......................................................................... 12
REVISION HISTORY
10/04—Revision 0: Initial Version
Transistor Count........................................................................... 6
ESD Caution.................................................................................. 6
315 MHz ........................................................................................ 8
433 MHz ........................................................................................ 9
868 MHz ...................................................................................... 10
915 MHz ...................................................................................... 11
PLL Operation ............................................................................ 12
Crystal Oscillator........................................................................ 12
Crystal Compensation Register................................................ 12
Clock Out Circuit ....................................................................... 12
Loop Filter ................................................................................... 13
Voltage-Controlled Oscillator (VCO) ..................................... 13
Voltage Regulators...................................................................... 13
FSK Modulation.......................................................................... 13
GFSK Modulation ...................................................................... 14
Power Amplifier.......................................................................... 14
Rev. 0 | Page 2 of 28
Theory of Operation ...................................................................... 17
Application Examples .................................................................... 19
Register Descriptions ..................................................................... 24
Outline Dimensions ....................................................................... 28
GOOK Modulation .................................................................... 15
Output Divider ........................................................................... 16
MUXOUT Modes....................................................................... 16
Choosing the External Inductor Value.................................... 17
Choosing the Crystal/PFD Value............................................. 17
Tips on Designing the Loop Filter ........................................... 17
PA Matching................................................................................ 18
Transmit Protocol and Coding Considerations ..................... 18
315 MHz Operation ................................................................... 20
433 MHz Operation ................................................................... 21
868 MHz Operation ................................................................... 22
915 MHz Operation ................................................................... 23
R Register..................................................................................... 24
N-Counter Latch ........................................................................ 25
Modulation Register .................................................................. 26
Function Register ....................................................................... 27
Ordering Guide .......................................................................... 28