TI IWR1843AQGABLR

The IWR1843 is an integrated single-chip millimeter-wave sensor based on FMCW radar technology, operating in the 76 to 81GHz band with continuous chirps of up to 4GHz. Manufactured using a low-power 45nm RFCMOS process, it achieves exceptional integration in an ultra-compact package. The IWR1843 is an ideal solution for low-power, self-monitoring, ultra-precise radar systems in industrial applications such as building automation, factory automation, drones, material handling, traffic monitoring, and surveillance. The IWR1843 is a self-contained single-chip solution that simplifies millimeter-wave sensor implementation in the 76 to 81GHz band. It incorporates a monolithically implemented 3TX, 4RX system with built-in PLL and ADC. The IWR1843 also integrates a DSP subsystem featuring a high-performance C674x DSP for radar signal processing. The device includes an ARM R4F-based processor subsystem responsible for front-end configuration, control, and calibration. Simple programming model changes enable a wide variety of sensor implementations with dynamic reconfiguration for multi-mode sensing. The Hardware Accelerator (HWA) performs radar processing and helps save MIPS on the DSP for higher-level algorithms. Additionally, the device is offered as a complete platform solution that includes reference designs, software drivers, sample configurations, API guides, training, and user documentation.

• FMCW Transceiver:
  • Integrated PLL, transmitter, receiver, baseband, and ADC; 76GHz to 81GHz coverage with 4GHz usable bandwidth; four receive channels, three transmit channels
  • Ultra-precise chirp engine based on fractional-N PLL
  • TX power: 12dBm
  • Built-in calibration and self-test (monitoring)
  • Arm Cortex-R4F-based radio control system
  • Built-in firmware (ROM)
  • Self-calibrating system for process and temperature variations
  • C674x DSP for FMCW signal processing
  • On-chip memory: 2MB
  • Cortex-R4F MCU for object tracking, classification, and interface control
  • Autonomous mode support (user application loaded from QSPI flash)
  • Integrated peripherals: internal memory with ECC
  • Host interface: CAN and CAN-FD
  • Additional interfaces for user applications: up to 6 ADC channels, up to 2 SPI channels, up to 2 UARTs, I2C, GPIO, dual-lane LVDS interface for raw ADC data and debug instrumentation
• Functional Safety Compliance:
  • Designed for functional safety applications
  • Documentation supports IEC 61508 functional safety system design to SIL-3
  • Hardware integrity up to SIL-2
  • Safety-related certification: IEC 61508 SIL2 certified by TUV SUD
• Advanced Device Features:
  • Embedded self-monitoring without host processor
  • Complex baseband architecture
  • Embedded interference detection
  • Programmable phase rotator in TX path for beamforming
• Power Management:
  • Built-in LDO network for enhanced PSRR
  • I/O dual-voltage support: 3.3V/1.8V
  • Clock source: supports 40MHz external oscillator, externally driven 40MHz clock (square/sine wave), and 40MHz crystal with load capacitors
  • 0.65mm pitch, 161-pin, 10.4mm×10.4mm flip-chip BGA package for easy assembly and low-cost PCB design
  • Compact solution size

• Smart/automatic door openers
• Liquid tank level detection
• Radar displacement sensing
• Field transmitters