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Texas Instruments AWR1843AOP Automotive Radar Sensors

Texas Instruments AWR1843AOP Automotive Radar Sensors are Antenna-On-Package devices operating in the 76GHz to 81GHz band. The AWR1843AOP utilizes TI’s low-power 45nm RFCMOS process and allows unprecedented levels of integration in a tiny form factor. The AWR1843AOP Sensors are ideal for low-power, self-monitored, ultra-accurate radar systems in automotive applications.

The TI AWR1843AOP Automotive Radar Sensors integrate a DSP subsystem consisting of the high-performance C674x DSP for radar signal processing. The device features a BIST processor subsystem responsible for radio configuration, control, and calibration. Furthermore, the Automotive Radar Sensors include a user-programmable Arm® Cortex-R4F for automotive interfacing.

The Hardware Accelerator block (HWA) performs radar processing and offloads the DSP to execute higher-level algorithms. Simple programming model changes can enable a wide variety of sensor applications with the possibility of dynamic reconfiguration for implementing a multimode sensor. Additionally, the device is furnished as a complete platform solution, including reference hardware design, software drivers, sample configurations, API guide, and user documentation.

Features

FMCW transceiver
- Integrated 4 receivers and 3 transmitters Antennas-On-Package (AOP)
- Integrated PLL, transmitter, receiver, Baseband, and ADC
- 76GHz to 81GHz coverage with 4GHz available bandwidth
- Ultra-accurate chirp engine based on fractional-N PLL
- TX Effective isotropic radiated power (EIRP) of 16dBm
- RX Effective isotropic noise figure of 10dB (76GHz to 81GHz)
- Phase noise at 1MHz:
  - –95dBc/Hz (76GHz to 77GHz)
  - –93dBc/Hz (77GHz to 81GHz)
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
2MB RAM On-chip Memory
Arm Cortex-R4F microcontroller for object tracking and classification, AUTOSAR, and interface control
- Supports autonomous mode (loading user application from QSPI flash memory)
Host interface
- CAN (two instances, one being CAN-FD)
Other interfaces available to user application
- Up to 6 general-purpose ADC channels
- Up to 2 SPI ports
- Up to 2 UARTs
- I²C
- GPIOs
- 2-lane LVDS interface for raw ADC data and debug instrumentation

Functional Safety-Compliant targeted
- Developed for functional safety applications
- Documentation will be available to aid ISO26262 functional safety system design
- Hardware integrity up to ASIL-B targeted
- Safety-related certification
  - ISO 26262 certification by TUV Sud planned
AEC-Q100 qualified
AWR1843AOP 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 beamforming
Power management
- Built-in LDO network for enhanced PSRR
- I/Os support dual voltage 3.3V/1.8V
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
- 0.8mm pitch, 180 pins 15mm × 15mm flip-chip BGA package (ALP) for easy assembly and low-cost PCB design
- Small solution size
Supports automotive temperature operating range

Applications

Car door opener applications
Blindspot detection
Lane change assistance

Cross-traffic alert
Parking assistance

Texas Instruments AWR1843AOP Automotive Radar Sensors

Features

Applications

Autonomous Radar Sensor for Automotive Applications

Block Diagram

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