1 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
– I2C
– 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

2 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

3 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 R4Fbased
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.