Texas Instruments IWR6843 Manual

IWR6843, IWR6443 Single-Chip 60 to 64GHz mmWave Sensor

1 Features

• FMCW transceiver
– Integrated PLL, transmitter, receiver, Baseband,
and ADC
– 60 to 64GHz coverage with 4GHz continuous
bandwidth
– Four receive channels
– Three transmit channels
– Supports 6-bit phase shifter for TX Beam
forming
– Ultra-accurate chirp engine based on fractional-
N PLL
– TX power: 12dBm
– RX noise figure:
• 12dB
– Phase noise at 1MHz:
• –93dBc/Hz
• Built-in calibration and self-test
– Arm ® Cortex ® -R4F-based radio control system
– Built-in firmware (ROM)
– Self-calibrating system across process and
temperature
– Embedded self-monitoring with no host
processor involvement on Functional Safety-
Compliant devices
• C674x DSP for advanced signal processing
(IWR6843 only)
• Hardware accelerator for FFT, filtering, and CFAR
processing
• Memory compression
• Arm-R4F microcontroller for object detection, and
interface control
– Supports autonomous mode (loading user
application from QSPI flash memory)
• Internal memory with ECC
– IWR6843: 1.75MB, divided into MSS program
RAM (512KB), MSS data RAM (192KB), DSP
L1 RAM (64KB) and L2 RAM (256KB), and L3
radar data cube RAM (768KB)
– IWR6443: 1.4MB, divided into MSS program
RAM (512KB), MSS data RAM (192KB), and
L3 radar data cube RAM (768KB)
– Technical reference manual includes allowed
size modifications
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
SWRS219F – OCTOBER 2018 – REVISED APRIL 2025
• Other interfaces available to user application
– Up to 6 ADC channels (low sample rate
monitoring)
– Up to 2 SPI ports
– Up to 2 UARTs
– 1 CAN-FD interface
– I2C
– GPIOs
– 2 lane LVDS interface for raw ADC data and
debug instrumentation
• Functional Safety-Compliant
– Developed for functional safety applications
– Documentation available to aid IEC 61508
functional safety system design up to SIL 3
– Hardware integrity up to SIL-2
– Safety-related certification
• IEC 61508 certified upto SIL 2 by TUV SUD
• Non-Functional safety variants also available
• Power management
– Built-in LDO network for enhanced PSRR
– I/Os support dual voltage 3.3V/1.8V
• Clock source
– 40.0MHz crystal with internal oscillator
– Supports external oscillator at 40MHz
– Supports externally driven clock (square/sine)
at 40MHz
• Easy hardware design
– 0.65mm pitch, 161-pin 10.4mm × 10.4mm flip
chip BGA package for easy assembly and low-
cost PCB design
– Small solution size
• Operating conditions
– Junction temp range: –40°C to 105°C
IWR6843, IWR6443