AWR1843 Single-chip 76-GHz to 81-GHz automotive radar sensor integrating DSP, MCU and radar accelerator

Description

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 TI reference designs, software drivers, sample configurations, API guides, 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 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
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

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Part number	Order	Number of Rx	Number of Tx	ADC sampling rate (Max) (MSPS)	Arm CPU	DSP	Hardware accelerators	RAM	Interface	Rating	Package size: mm2:W x L (PKG)	Operating temperature range (C)
AWR1843	Order now	4	3	25	ARM-Cortex R4F 200MHz	C674x DSP 600MHz	Radar hardware accelerator	2048	CAN CAN-FD I2C	Catalog	161FC/CSP: 108 mm2: 10.4 x 10.4 (FC/CSP \| 161)	-40 to 125
AWR1243	Samples not available	4	3	37.5				0	MIPI-CSI2 SPI UART	Catalog	161FC/CSP: 108 mm2: 10.4 x 10.4 (FC/CSP \| 161)	-40 to 125
AWR1443	Samples not available	4	3	12.5	ARM-Cortex R4F 200MHz		Radar hardware accelerator	576	CAN I2C QSPI SPI UART	Automotive	161FC/CSP: 108 mm2: 10.4 x 10.4 (FC/CSP \| 161)	-40 to 125
AWR1642	Samples not available	4	2	12.5	ARM-Cortex R4F 200MHz	C674x DSP 600MHz		1536	CAN CAN-FD I2C QSPI SPI UART	Automotive	161FC/CSP: 108 mm2: 10.4 x 10.4 (FC/CSP \| 161)	-40 to 125

AWR1843 (ACTIVE) Single-chip 76-GHz to 81-GHz automotive radar sensor integrating DSP, MCU and radar accelerator

Description

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