24 GHz VCO and PGA with 2-Channel PA Output Data Sheet ADF5901 Industrial sensors FEATURES Precision instrumentation 24 GHz to 24.25 GHz voltage controlled oscillator (VCO) Tank level sensors 2-channel 24 GHz power amplifier (PA) with 8 dBm output Smart sensors Single-ended outputs Door opening 2-channel muxed outputs with mute function Energy saving Programmable output power Commercial sensors: object detection and tracking N divider output (frequency discriminator) Cars, boats, aircraft, and UAVs (drones): collision avoidance 24 GHz local oscillator (LO) output buffer Intelligent transportation systems: intelligent traffic 250 MHz signal bandwidth monitoring and control Power control detector Surveillance and security Auxiliary 8-bit ADC 5C temperature sensor GENERAL DESCRIPTION 4-wire serial peripheral interface (SPI) The ADF5901 is a 24 GHz Tx monolithic microwave integrated Electrostatic discharge (ESD) performance circuit (MMIC) with an on-chip, 24 GHz VCO with PGA and Human body model (HBM): 2000 V dual Tx channels for radar systems. The on-chip, 24 GHz VCO Charged device model (CDM): 250 V generates the 24 GHz signal for the two Tx channels and the LO Qualified for automotive applications output. Each Tx channel contains a power control circuit. There APPLICATIONS is also an on-chip temperature sensor. Automotive radars Control of all the on-chip registers is through a simple 4-wire Industrial radars interface. Microwave radar sensors The ADF5901 comes in a compact 32-lead, 5 mm 5 mm LFCSP package. FUNCTIONAL BLOCK DIAGRAM DVDD VREG C1 C2 TX AHI RF AHI AHI VCO AHI R SET REGULATOR REFERENCE REF IN R-DIVIDER ADF5901 MUXOUT ADC VCO CAL TX 1 OUT TX 2 2 OUT N-DIVIDER ADC 2 CLK TEMPERATURE ATEST 32-BIT SENSOR DATA DATA LE REGISTER DOUT ADC CE V AUX AUX LO GND TUNE OUT Figure 1. Rev. B 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 20152017 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com 13336-001ADF5901 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Register 2 ..................................................................................... 17 Applications ....................................................................................... 1 Register 3 ..................................................................................... 18 General Description ......................................................................... 1 Register 4 ..................................................................................... 19 Functional Block Diagram .............................................................. 1 Register 5 ..................................................................................... 20 Revision History ............................................................................... 2 Register 6 ..................................................................................... 20 Specifications ..................................................................................... 3 Register 7 ..................................................................................... 21 Timing Specifications .................................................................. 4 Register 8 ..................................................................................... 22 Absolute Maximum Ratings ............................................................ 6 Register 9 ..................................................................................... 22 ESD Caution .................................................................................. 6 Register 10 ................................................................................... 23 Pin Configuration and Function Descriptions ............................. 7 Register 11 ................................................................................... 23 Typical Performance Characteristics ............................................. 9 Initialization Sequence .............................................................. 23 Theory of Operation ...................................................................... 11 Recalibration Sequence ............................................................. 23 Reference Input Section ............................................................. 11 Temperature Sensor ................................................................... 24 RF INT Divider ........................................................................... 11 RF Synthesis: a Worked Example ............................................. 24 INT, FRAC, and R Relationship ............................................... 11 Applications Information .............................................................. 25 R Counter .................................................................................... 11 Application of the ADF5901 in FMCW Radar ...................... 25 Input Shift Register..................................................................... 11 Outline Dimensions ....................................................................... 26 Program Modes .......................................................................... 11 Ordering Guide .......................................................................... 26 Register Maps .................................................................................. 13 Automotive Products ................................................................. 26 Register 0 ..................................................................................... 15 Register 1 ..................................................................................... 16 REVISION HISTORY Changes to Initialization Sequence Section and Recalibration 8/2017Rev. A to Rev. B Sequence Section ............................................................................ 23 Changes to Figure 17 ...................................................................... 13 Changes to Figure 20 ...................................................................... 17 Updated Outline Dimensions ....................................................... 27 12/2015Revision 0: Initial Version Changes to Ordering Guide .......................................................... 27 7/2016Rev. 0 to Rev. A Changes to Applications Section .................................................... 1 Rev. B Page 2 of 26