0.2.2.1 IWR6843

The IWR6843 is an integrated, single-chip, frequency modulated continuous wave (FMCW) sensor capable of operation in the 60 to 64 GHz band. The sensor is built with the low-power, 45nm, RFCMOS process from TI and enables unprecedented levels of integration in an extremely small form factor. The IWR6843 is an ideal solution for low-power, self-monitored, ultra-accurate radar systems in the industrial space.

Figure 4. IWR6843 Block Diagram

The IWR6843 has the following features:

• FMCW transceiver
  • Integrated PLL, transmitter, receiver, baseband, and A2D
  • 60 to 64GHz coverage, with 4GHz available bandwidth
  • Four receive channels
  • Three transmit channels
  • Ultra-accurate chirp (timing) engine based on fractional-N PLL
  • TX power
    • 12 dBm
  • RX noise figure
    • 12 dB (60 to 64 GHz)
  • Phase noise at 1 MHz
    • –92 dBc/Hz (60 to 64 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: 1.75MB
• Cortex-R4F MCU for object detection, and interface control
  • Supports autonomous mode (loading the user application from QSPI flash memory)
• Integrated peripherals
  • Internal memories with ECC
  • Up to six ADC Channels
  • Up to two SPI Channels
  • Up to two UARTs
  • CAN interface
  • I²C
  • GPIOs
  • Two-lane LVDS interface for raw ADC data and debug instrumentation