AWR1642

(PREVIEW) Single-Chip 76-to-81GHz Automotive Radar Sensor Integrating DSP and MCU

Diagrams

Functional diagram

Description

The AWR1642 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 AWR1642 is an ideal solution for low-power, self-monitored, ultra-accurate radar systems in the automotive space.

The AWR1642 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 2TX, 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 an ARM R4F-based processor subsystem, which is responsible for radio configuration, control, and calibration. 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
    • Two Transmit Channels
    • Ultra-Accurate Chirp (Timing) Engine Based on Fractional-N PLL
    • TX Power: 12 dBm
    • RX Noise Figure:
      • 15 dB (76 to 77 GHz)
      • 16 dB (77 to 81 GHz)
    • Phase Noise at 1 MHz:
      • –94 dBc/Hz (76 to 77 GHz)
      • –91 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: 1.5MB
  • 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 Capable
  • AECQ100 Qualified
  • AWR1642 Advanced Features
    • Embedded Self-monitoring With No Host Processor Involvement
    • Complex Baseband Architecture
    • Embedded Interference Detection Capability
  • Power Management
    • Built-in LDO Network for Enhanced PSRR
    • I/Os Support Dual Voltage 3.3 V/1.8 V
  • Clock Source
    • 40.0-MHz Crystal With Internal Oscillator
    • Supports External Oscillator at 40 and 50 MHz
    • Supports Externally Driven Clock (Square/Sine) at 40 and 50 MHz
  • 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

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Parametrics

No. of Rx 4   
No. of Tx 2   
ADC Sampling Rate (Max) (MSPS) 12.5   
ARM CPU ARM-Cortex R4F 200MHz   
DSP C674x DSP 600MHz   
Hardware Accelerators N/A   
RAM 1536   
Interface CAN^CAN-FD^I2C^QSPI^SPI^UART   
Rating Automotive   
Operating Temperature Range (C) -40 to 125   
Package Size: mm2:W x L (PKG) 161FC/CSP: 108 mm2: 10.4 x 10.4(FC/CSP)   

Companion Products

Technical Documents

Datasheet (1)

Errata (1)

Application notes (8)

User guides (2)

White papers (6)

Design files (1)

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