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EVAL-ADF7012EB2 Datasheet(PDF) 2 Page - Analog Devices |
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EVAL-ADF7012EB2 Datasheet(HTML) 2 Page - Analog Devices |
2 / 28 page ADF7012 Rev. 0 | Page 2 of 28 TABLE OF CONTENTS Specifications..................................................................................... 3 Timing Characteristics..................................................................... 5 Absolute Maximum Ratings............................................................ 6 Transistor Count........................................................................... 6 ESD Caution.................................................................................. 6 Pin Configuration and Function Descriptions............................. 7 Typical Performance Characteristics ............................................. 8 315 MHz ........................................................................................ 8 433 MHz ........................................................................................ 9 868 MHz ...................................................................................... 10 915 MHz ...................................................................................... 11 Circuit Description......................................................................... 12 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 GOOK Modulation .................................................................... 15 Output Divider ........................................................................... 16 MUXOUT Modes....................................................................... 16 Theory of Operation ...................................................................... 17 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 Application Examples .................................................................... 19 315 MHz Operation ................................................................... 20 433 MHz Operation ................................................................... 21 868 MHz Operation ................................................................... 22 915 MHz Operation ................................................................... 23 Register Descriptions ..................................................................... 24 R Register..................................................................................... 24 N-Counter Latch ........................................................................ 25 Modulation Register .................................................................. 26 Function Register ....................................................................... 27 Outline Dimensions ....................................................................... 28 Ordering Guide .......................................................................... 28 REVISION HISTORY 10/04—Revision 0: Initial Version |
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