IWR1843 Texas instruments

IWR1843

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IWR1843

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Описание

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 ADC 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.

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
- 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 process 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
Other interfaces available to user application
- Up to 6 ADC channels
- Up to 2 SPI channels
- Up to 2 UARTs
- I 2C
- 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
Device 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
Operating conditions
- Junction temp range: –40°C to 105°C

Frequency range	76 - 81 GHz
Number of receivers	4
Number of transmitters	3
ADC sampling rate (ksps)	250000
TX power (dBm)	12
Arm CPU	ARM R4F @ 200MHz
Coprocessors	Radar Hardware Accelerator
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 105
TI functional safety category	Functional Safety-Compliant
Security	Cryptographic acceleration, Device identity/keys, Secure boot, Secure software update, Software IP protection
Power supply solution	LP87702-Q1, LP87745-Q1
Rating	Catalog