1 Features

• FMCW transceiver

– Integrated PLL, transmitter, receiver, Baseband,

and ADC

– 76 to 81GHz coverage with 4GHz available

bandwidth

– Four receive channels

– Two transmit channels

– Ultra-accurate chirp (timing) engine based on

fractional-N PLL

– TX power: 12dBm

– RX noise figure:

• 14dB (76 to 77GHz)

• 15dB (77 to 81GHz)

– Phase noise at 1MHz:

• –95dBc/Hz (76 to 77GHz)

• –93dBc/Hz (77 to 81GHz)

• Built-in calibration and self-test (monitoring)

– Arm® Cortex®-R4F-based radio control system

– Built-in firmware (ROM)

– Self-calibrating system across process 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 and 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

• Device Security (on select part numbers)

– Secure authenticated and encrypted boot

support

– Customer programmable root keys, symmetric

keys (256 bit), Asymmetric keys (up to RSA-2K)

with Key revocation capability

– Crypto software accelerators - PKA , AES (up

to 256 bit), SHA (up to 256 bit), TRNG/DRGB

• Functional Safety-Compliant

– Developed for functional safety applications

– Documentation available to aid ISO 26262

functional safety system design up to ASIL-D

– Hardware integrity up to ASIL-B

– Safety-related certification

• ISO 26262 certified upto ASIL B by TUV

SUD

• AEC-Q100 qualified

• Device 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

– Supports External Oscillator at 40MHz

– Supports externally driven clock (square/sine)

at 40MHz

– Supports 40MHz crystal connection with load

capacitors

• Easy hardware design

– 0.65mm pitch, 161-pin 10.4mm × 10.4 mmflip

chip BGA package for easy assembly and lowcost

PCB design

– Small solution size

• Operating Conditions

– Junction temp range: –40°C to 125°C

2 Applications

• Blind spot detection

• Lane change assistance

• Cross traffic alert

• Parking assistance

• Occupancy detection

• Gesture recognition

3 Description

The AWR1642 device is an integrated single-chip FMCW radar sensor capable of operation in the 76 to 81GHz

band. The device is built with TI’s low-power 45nm 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 81GHz. It is built on TI’s low-power 45nm

RFCMOS process, which enables a monolithic implementation of a 2TX, 4RX system with built-in PLL and

ADC 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 TI reference

designs, software drivers, sample configurations, API guides, and user documentation.