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Texas Instruments IWR1843AOP mmWave Sensor Antennas-On-Package (AOP)

Texas Instruments IWR1843AOP mmWave Sensor Antennas-On-Package (AOP) is an integrated single-chip sensor based on FMCW radar technology. The IWR1843AOP operates in the 76GHz to 81GHz band with up to 4GHz continuous chirp.

The device is designed with the low-power 45nm RFCMOS process from Texas Instruments. This solution facilitates unprecedented levels of integration in a tiny form factor.

The TI IWR1843AOP is an excellent answer for low-power, self-monitored, ultra-accurate radar systems in industrial applications, such as building automation, drones, factory automation, material handling, traffic monitoring, and surveillance.

Features

  • FMCW transceiver
    • Integrated four receivers and three 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 process and temperature
  • Arm Cortex-R4F microcontroller for object tracking and classification 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
  • C674x DSP for FMCW signal processing
  • On-chip Memory of 2MB RAM
  • Device Security (on select part numbers)
    • Secure authenticated and encrypted boot support
    • Customer programmable root keys, symmetric keys (256 bit), Asymmetric keys (up to RSA-2K) with key revocation capability
    • Crypto software accelerators - PKA, AES (up to 256 bit), SHA (up to 256 bit), TRNG/DRGB
  • Functional safety targeted for SIL-2
  • IWR1843AOP 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 3.3V/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-pin 15mm x 15mm flip chip BGA package (ALP) for easy assembly and low-cost PCB design
    • Small solution size
  • Junction Temperature range of -40°C to 125°C

Applications

  • Automated door/gate
  • Motion detector
  • Industrial sensor for measuring range, velocity, and angle
  • Tank-level probing radar
  • Displacement sensing
  • Traffic monitoring
  • Proximity sensing
  • Security and surveillance
  • Factory automation safety guards
  • Level Transmitter
  • eBike
  • Parking barrier
  • Off-highway vehicle sensor
  • Kick eScooter
  • Self-balancing personal transporter

Block Diagram

Block Diagram - Texas Instruments IWR1843AOP mmWave Sensor Antennas-On-Package (AOP)

Functional Block Diagram

Block Diagram - Texas Instruments IWR1843AOP mmWave Sensor Antennas-On-Package (AOP)
Published: 2023-12-28 | Updated: 2024-01-15