• FMCW transceiver
  • Integrated PLL, transmitter, receiver, Baseband, and ADC
  • 76- to 81-GHz coverage with 4 GHz available bandwidth
  • Four receive channels
  • Three transmit channels (two can be used simultaneously)
  • 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
  • Built-in firmware (ROM)
  • Self-calibrating system across process and temperature
• Host interface
  • Control interface with external processor over SPI
  • Data interface with external processor over MIPI D-PHY and CSI2 V1.1
  • Interrupts for fault reporting
• Functional Safety-Compliant
  • Developed for functional safety applications
  • Documentation available to aid ISO 26262 functional safety system design up to ASIL-D
  • Hardware integrity up to ASIL-B
  • Safety-related certification
    • ISO 26262 certified upto ASIL B by TUV SUD
• AEC-Q100 qualified
• Device advanced features
  • Embedded self-monitoring with no host processor involvement
  • Complex baseband architecture
  • Embedded interference detection capability
• Power management
  • Built-in LDO network for enhanced PSRR
  • I/Os support dual voltage 3.3 V/1.8 V
• Clock source
  • 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
• Operating Conditions
  • Junction temp range: –40°C to 125°C

• Automotive Sensor for measuring range, velocity and angle
• Automated highway driving
• Automatic emergency braking
• Adaptive cruise control

Figure 2-1 Autonomous Radar Sensor For Automotive Applications

The AWR1243 device is an integrated single-chip FMCW transceiver capable of operation in the 76- to 81-GHz band. The device enables unprecedented levels of integration in an extremely small form factor. AWR1243 is an ideal solution for low power, self-monitored, ultra-accurate radar systems in the automotive space.

The AWR1243 device is a self-contained FMCW transceiver 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 ADC converters. 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.

Figure 4-1 shows the functional block diagram of the device.

Phase Shift Control:

• 0° / 180° BPM for AWR1243

Internal temperature sensor accuracy is ± 7 °C.

Figure 4-1 Functional Block Diagram