IWR1843 Sensor Datasheet

IWR1843 Datasheet PDF, Equivalent


Part Number

IWR1843

Description

Single-Chip 76- to 81-GHz FMCW mmWave Sensor

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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IWR1843
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IWR1843
SWRS228 – SEPTEMBER 2019
IWR1843 Single-Chip 76- to 81-GHz FMCW mmWave Sensor
1 Device Overview
1.1 Features
1
• FMCW transceiver
– Integrated PLL, transmitter, receiver, Baseband,
and A2D
– 76- to 81-GHz coverage with 4 GHz available
bandwidth
– Four receive channels
– Three transmit channels
– Ultra-accurate chirp engine based on fractional-
N PLL
– TX power: 12 dBm
• Built-in calibration and self-test (monitoring)
– ARM® Cortex®-R4F-based radio control system
– Built-in firmware (ROM)
– Self-calibrating system across frequency and
temperature
• C674x DSP for FMCW signal processing
• On-chip Memory: 2MB
• Cortex-R4F microcontroller for object tracking and
classification, and interface control
– Supports autonomous mode (loading user
application from QSPI flash memory)
• Integrated peripherals
– Internal memories With ECC
• Host interface
– CAN and CAN-FD
1.2 Applications
Smart/Automatic door openers Industrial sensor
for measuring range, velocity, and angle
Tank level probing radar
Displacement sensing
Field transmitters
Traffic monitoring
• Other interfaces available to user application
– Up to 6 ADC channels
– Up to 2 SPI channels
– Up to 2 UARTs
– I2C
– GPIOs
– 2-lane LVDS interface for raw ADC data and
debug instrumentation
• IWR1843 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
– 0.65-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
Proximity sensing
Security and surveillance
Factory automation safety guards
People counting
Motion detection
1
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.

IWR1843
IWR1843
SWRS228 – SEPTEMBER 2019
40-MHz
Crystal
QSPI Flash
Power
Management
POWER
www.ti.com
Antenna
Structure
RX1
RX2
RX3
RX4
TX1
TX2
TX3
mmWave/
Radar
Front End
Integrated MCU
ARM Cortex-R4F
Integrated DSP
TI C674x
SPI
UART Tx/Rx
CAN
IWR1843
Figure 1-1. Autonomous Sensor For Industrial Applications
1.3 Description
The IWR1843 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 IWR1843 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 IWR1843 device is a self-contained, single-chip solution that simplifies the implementation of
mmWave sensors in the band of 76 to 81 GHz. The IWR1843 includes a monolithic implementation of a
3TX, 4RX system with built-in PLL, and A2D converters. The IWR1843 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.
PART NUMBER
Device Information(1)
PACKAGE
IWR1843AQGABL (Tray)
FCBGA (161)
IWR1843AQGABLR (Reel)
FCBGA (161)
(1) For more information, see Section 10, Mechanical, Packaging, and Orderable Information.
BODY SIZE
10.4 mm × 10.4 mm
10.4 mm × 10.4 mm
2 Device Overview
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Copyright © 2019, Texas Instruments Incorporated


Features Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity IWR1843 SWRS228 – SEPTEMBER 2 019 IWR1843 Single-Chip 76- to 81-GHz F MCW mmWave Sensor 1 Device Overview 1 .1 Features 1 • FMCW transceiver – Integrated PLL, transmitter, receiver, Baseband, and A2D – 76- to 81-GHz cov erage with 4 GHz available bandwidth Four receive channels – Three trans mit channels – Ultra-accurate chirp e ngine based on fractionalN PLL – TX p ower: 12 dBm • Built-in calibration a nd self-test (monitoring) – ARM® Cor tex®-R4F-based radio control system Built-in firmware (ROM) – Self-cali brating system across frequency and tem perature • C674x DSP for FMCW signal processing • On-chip Memory: 2MB • Cortex-R4F microcontroller for object t racking and classification, and interfa ce control – Supports autonomous mode (loading user application from QSPI fl ash memory) • Integrated peripherals – Internal memories With ECC • Host interface – CAN and CAN-FD 1.2 Applications • Smart/Automatic d.
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