Texas Instruments
The AWR1843 device is an integrated single-chip FMCW radar sensor capable of operation in the 76- to 81-GHz band. The device is built with TI’s low-power 45-nm RFCMOS process and enables unprecedented levels of integration in an extremely small form factor. The AWR1843 is an ideal solution for low-power, self-monitored, ultra-accurate radar systems in the automotive space.
The AWR1843 device is a self-contained FMCW radar sensor single-chip solution that simplifies the implementation of Automotive Radar sensors in the band of 76 to 81 GHz. It is built on TI’s low-power 45-nm RFCMOS process, which enables a monolithic implementation of a 3TX, 4RX system with built-in PLL and A2D converters. It integrates the DSP subsystem, which contains TI’s high-performance C674x DSP for the Radar Signal processing. The device includes a BIST processor subsystem, which is responsible for radio configuration, control, and calibration. Additionally the device includes a user programmable ARM R4F based for automotive interfacing. The Hardware Accelerator block (HWA) can perform radar processing and can help save MIPS on the DSP for higher level algorithms. Simple programming model changes can enable a wide variety of sensor implementation (Short, Mid, Long) with the possibility of dynamic reconfiguration for implementing a multimode sensor. Additionally, the device is provided as a complete platform solution including reference hardware design, software drivers, sample configurations, API guide, and user documentation.
Features:
FMCW Transceiver
Integrated PLL, Transmitter, Receiver, Baseband, and A2D
76- to 81-GHz Coverage With 4 GHz Available Bandwidth
Four Receive Channels
Three Transmit Channels
Ultra-Accurate Chirp Engine Based on Fractional-N PLL
TX Power: 12 dBm
RX Noise Figure:
14 dB (76 to 77 GHz)
15 dB (77 to 81 GHz)
Phase Noise at 1 MHz:
–95 dBc/Hz (76 to 77 GHz)
–93 dBc/Hz (77 to 81 GHz)
Built-in Calibration and Self-Test (Monitoring)
ARM® Cortex®-R4F-Based Radio Control System
Built-in Firmware (ROM)
Self-calibrating System Across Frequency and Temperature
C674x DSP for FMCW Signal Processing
On-Chip Memory: 2MB
Cortex-R4F Microcontroller for Object Tracking and Classification, AUTOSAR, and Interface Control
Supports Autonomous Mode (Loading User Application from QSPI Flash Memory)
Integrated Peripherals
Internal Memories With ECC
Host Interface
CAN (Two Instances, One Being CAN-FD)
Other Interfaces Available to User Application
Up to 6 ADC Channels
Up to 2 SPI Channels
Up to 2 UARTs
I2C
GPIOs
2-Lane LVDS Interface for Raw ADC Data and Debug Instrumentation
ASIL B Targeted
AECQ100 Qualified
AWR1843 Advanced Features
Embedded Self-monitoring With No Host Processor Involvement
Complex Baseband Architecture
Embedded Interference Detection Capability
Programmable Phase Rotators in Transmit Path to Enable Beam Forming
Power Management
Built-in LDO Network for Enhanced PSRR
I/Os Support Dual Voltage 3.3 V/1.8 V
Clock Source
Supports External Oscillator at 40 MHz
Supports Externally Driven Clock (Square/Sine) at 40 MHz
Supports 40 MHz Crystal Connection with Load Capacitors
Easy Hardware Design
0.65-mm Pitch, 161-Pin 10.4 mm × 10.4 mm Flip Chip BGA Package for Easy Assembly and Low-Cost PCB Design
Small Solution Size
Supports Automotive Temperature Operating Range