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IWR1843

集成 DSP、MCU 和雷达加速器的 76GHz 至 81GHz 单芯片工业雷达传感器

描述

The IWR1843 device is an integrated single-chip mmWave sensor based on FMCW radar technology capable of operating in the 76- to 81-GHz band with up to 4-GHz continuous chirp. The device is built with the low-power 45-nm RFCMOS process from Texas Instruments. This solution enables unprecedented levels of integration in an extremely small form factor. The IWR1843 is an ideal solution for low-power, self-monitored, ultra-accurate radar systems in industrial applications, such as, building automation, factory automation, drones, material handling, traffic monitoring, and surveillance.

The IWR1843 device is a self-contained, single-chip solution that simplifies the implementation of mmWave sensors in the band of 76 to 81 GHz. The IWR1843 includes a monolithic implementation of a 3TX, 4RX system with built-in PLL, and A2D converters. The IWR1843 also integrates a DSP subsystem, which contains a TI high-performance C674x DSP for the radar signal processing. The device includes an ARM R4F-based processor subsystem, which is responsible for front-end configuration, control, and calibration. Simple programming model changes can enable a wide variety of sensor implementation with the possibility of dynamic reconfiguration for implementing a multimode sensor. The Hardware Accelerator block (HWA) can perform radar processing and can help save MIPS on the DSP for higher-level algorithms. Additionally, the device is provided as a complete platform solution including TI reference designs, software drivers, sample configurations, API guides, training, and user documentation.

特性

• 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

• 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, 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

• IWR1843 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