24 GHz, ISM Band, Multichannel FMCW Radar Transmitter Data Sheet ADF5902 FEATURES APPLICATIONS 24 GHz to 24.25 GHz VCO (industrial, scientific, and medical Automotive radars (ISM) radio band) Industrial radars 2-channel 24 GHz power amplifier with 8 dBm output Microwave radar sensors Single-ended outputs GENERAL DESCRIPTION 2-channel muxed outputs with mute function The ADF5902 is a 24 GHz transmitter (Tx) monolithic microwave Programmable output power integrated circuit (MMIC) with an on-chip, 24 GHz voltage LO output buffer controlled oscillator (VCO). The VCO features a fractional-N RF frequency range: 24 GHz to 24.25 GHz frequency synthesizer with waveform generation capability Power control detector with programmable grid array (PGA) and dual transmitter Auxiliary 8-bit ADC channels for radar systems. The on-chip, 24 GHz VCO High and low speed FMCW ramp generation generates the 24 GHz signal for the two transmitter channels 25-bit fixed modulus allows subhertz frequency resolution and the local oscillator (LO) output. Each transmitter channel PFD frequencies up to 110 MHz contains a power control circuit. There is also an on-chip Normalized phase noise floor of 222 dBc/Hz temperature sensor. Programmable charge pump currents 5C temperature sensor Control of all the on-chip registers is through a simple, 4-wire 4-wire SPI serial peripheral interface (SPI). ESD performance The ADF5902 comes in a compact, 32-lead, 5 mm 5 mm HBM: 2000 V LFCSP package. CDM: 250 V Qualified for automotive applications FUNCTIONAL BLOCK DIAGRAM C1 C2 TX AHI RF AHI AHI DVDD VCO AHI CP AHI R VREG SET REGULATOR BIAS ADF5902 CLK 32-BIT GND DATA DVDD DATA LE RDIV MUXOUT REGISTER ADC OUTPUT READBACK NDIV DOUT CONTROL FREQUENCY COUNTER RAMP STATUS CE VCO ADC CAL TX 1 OUT REF R DIVIDER + IN PHASE CHARGE FREQUENCY PUMP DETECTOR 2 TX 2 OUT N DIVIDER ADC THIRD-ORDER TEMPERATURE ATEST FRACTIONAL SENSOR INTERPOLATOR ADC RAMP TX DATA GENERATION FMCW RAMP GENERATION PLL CP V TUNE LO GND OUT OUT Figure 1. Rev. A Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20182020 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 16746-001ADF5902 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Register 6 ..................................................................................... 22 Applications ....................................................................................... 1 Register 7 ..................................................................................... 23 General Description ......................................................................... 1 Register 8 ..................................................................................... 24 Functional Block Diagram .............................................................. 1 Register 9 ..................................................................................... 24 Revision History ............................................................................... 2 Register 10 ................................................................................... 25 Specif icat ions ..................................................................................... 3 Register 11 ................................................................................... 25 Timing Specifications .................................................................. 5 Register 12 ................................................................................... 26 Absolute Maximum Ratings ............................................................ 6 Register 13 ................................................................................... 27 Thermal Resistance ...................................................................... 6 Register 14 ................................................................................... 28 ESD Caution .................................................................................. 6 Register 15 ................................................................................... 29 Pin Configuration and Function Descriptions ............................. 7 Register 16 ................................................................................... 30 Typical Performance Characteristics ............................................. 9 Register 17 ................................................................................... 30 Theory of Operation ...................................................................... 11 Applications Information .............................................................. 31 Reference Input Section ............................................................. 11 Initialization Sequence .............................................................. 31 RF INT Divider ........................................................................... 11 Recalibration Sequence ............................................................. 32 INT, FRAC, and R Relationship ............................................... 11 Temperature Sensor ................................................................... 33 R Counter .................................................................................... 11 RF Synthesis: A Worked Example ............................................ 33 PFD and Charge Pump .............................................................. 11 Reference Doubler ...................................................................... 33 Input Shift Register..................................................................... 11 Frequency Measurement Procedure ........................................ 34 Program Modes .......................................................................... 12 Waveform Generation ............................................................... 34 Register Maps .................................................................................. 13 Waveform Deviations and Timing ........................................... 34 Register 0 ..................................................................................... 16 Ramp and Modulation ............................................................... 35 Register 1 ..................................................................................... 17 Application of the ADF5902 in FMCW Radar ...................... 37 Register 2 ..................................................................................... 18 Outline Dimensions ....................................................................... 39 Register 3 ..................................................................................... 19 Ordering Guide .......................................................................... 39 Register 4 ..................................................................................... 20 Automotive Products ................................................................. 39 Register 5 ..................................................................................... 21 REVISION HISTORY 1/2020Rev. 0 to Rev. A Changes to Figure 23 ...................................................................... 15 Changes to Figure 41 ...................................................................... 30 11/2018Revision 0: Initial Version Rev. A Page 2 of 39