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IWR1843AOP
  • IWR1843AOP
  • IWR1843AOP

IWR1843AOP

ACTIVE

Single-chip 76-GHz to 81-GHz industrial radar sensor integrating antenna on package, DSP and MCU

Texas Instruments IWR1843AOP Product Info

1 April 2026 0

Parameters

Type

IC

Frequency range

76 - 81 GHz

Number of receivers

4

Number of transmitters

3

ADC sampling rate (ksps)

25000

TX power (dBm)

12

Arm CPU

1 Arm Cortex-M4, 1 Arm11

Hardware accelerators

Radar hardware accelerator

Edge AI enabled

Yes

DSP type

1 C67x DSP @ 600MHz

Interface type

CAN, CAN-FD, I2C, LVDS, QSPI, SPI, UART

RAM (kByte)

2048

Operating temperature range (°C)

-40 to 125

Security

Cryptographic acceleration, Device attestation & anti-counterfeit, Secure boot, Secure firmware & software update, Software IP protection

Power supply solution

LP87702-Q1, LP87745-Q1

Rating

Catalog

Package

FCCSP (ALP)-180-225 mm² 15 x 15

Features

  • FMCW transceiver
    • Integrated 4 receivers and 3 transmitters Antennas-On-Package (AOP)
    • Integrated PLL, transmitter, receiver, Baseband, and ADC
    • 76- to 81-GHz coverage with 4 GHz available bandwidth
    • Ultra-accurate chirp engine based on fractional-N PLL
    • TX Effective isotropic radiated power (EIRP): 16 dBm
    • RX Effective isotropic noise figure: 10 dB (76 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 (monitoring)
    • Arm Cortex-R4F-based radio control system
    • Built-in firmware (ROM)
    • Self-calibrating system across process and temperature
  • C674x DSP for FMCW signal processing
  • On-chip Memory: 2MB RAM
  • 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
    • I 2C
    • GPIOs
    • 2-lane LVDS interface for raw ADC data and debug instrumentation
  • 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 3.3 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
    • 0.8-mm pitch, 180-pin 15 mm × 15 mm flip chip BGA package (ALP) for easy assembly and low-cost PCB design
    • Small solution size
  • Operating Conditions
    • Junction Temperature range: –40°C to 125°C
  • FMCW transceiver
    • Integrated 4 receivers and 3 transmitters Antennas-On-Package (AOP)
    • Integrated PLL, transmitter, receiver, Baseband, and ADC
    • 76- to 81-GHz coverage with 4 GHz available bandwidth
    • Ultra-accurate chirp engine based on fractional-N PLL
    • TX Effective isotropic radiated power (EIRP): 16 dBm
    • RX Effective isotropic noise figure: 10 dB (76 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 (monitoring)
    • Arm Cortex-R4F-based radio control system
    • Built-in firmware (ROM)
    • Self-calibrating system across process and temperature
  • C674x DSP for FMCW signal processing
  • On-chip Memory: 2MB RAM
  • 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
    • I 2C
    • GPIOs
    • 2-lane LVDS interface for raw ADC data and debug instrumentation
  • 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 3.3 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
    • 0.8-mm pitch, 180-pin 15 mm × 15 mm flip chip BGA package (ALP) for easy assembly and low-cost PCB design
    • Small solution size
  • Operating Conditions
    • Junction Temperature range: –40°C to 125°C

Description

The IWR1843AOP 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 IWR1843AOP 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 IWR1843AOP device is a self-contained, single-chip solution that simplifies the implementation of mmWave sensors in the band of 76 to 81 GHz. The IWR1843AOP includes a monolithic implementation of a 3TX, 4RX system with built-in PLL, and ADC converters. The IWR1843AOP 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.

The IWR1843AOP 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 IWR1843AOP 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 IWR1843AOP device is a self-contained, single-chip solution that simplifies the implementation of mmWave sensors in the band of 76 to 81 GHz. The IWR1843AOP includes a monolithic implementation of a 3TX, 4RX system with built-in PLL, and ADC converters. The IWR1843AOP 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.

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