TI公司的AWR1243是單片77GHz和79GHz頻率調(diào)制連續(xù)波(FMCW)收發(fā)器,具有基于分數(shù)N PLL的超精密啁啾引擎,簡化了汽車雷達傳感器在76-81GHz的實現(xiàn)方案.采用低功耗45nm RFCMOS工藝,單片實現(xiàn)了內(nèi)置PLL和A2D轉(zhuǎn)換器的3TX,4RX系統(tǒng).TX發(fā)送功率12dBm,RX噪音15dB (76-77GHz), 16dB(77-81GHz),1MHz時的相位噪音–94 dBc/Hz (76-77 GHz),–91 dBc/Hz (77 - 81 GHz),內(nèi)置了校準和自測試等功能.主要用在自動高速公路駕駛,自動緊急剎車和自適應(yīng)巡航控制.本文介紹了AWR1243主要特性,功能框圖,短中遠距離雷達框圖,參考電路,以及AWR1443 BoosterPack™評估板主要特性,框圖,電路圖,材料清單和PCB設(shè)計圖.

The AWR1243 device is an integrated single-chip FMCW transceiver capable of operaTIon in the 76- to 81-GHz band. The device enables unprecedented levels of integraTIon in an extremely small form factor. AWR1243 is an ideal soluTIon for low power, self-monitored, ultra-accurate radar systems in the automotive space.

The AWR1243 device is a self-contained FMCW transceiver single-chip solution that simplifies the implementation of Automotive Radar sensors in the band of 76 to 81 GHz. It is built on TI’s low-power 45-nm RFCMOS process, which enables a monolithic implementation of a 3TX, 4RX system with built-in PLL and A2D converters. Simple programming model changes can enable a wide variety of sensor implementation (Short, Mid, Long) with the possibility of dynamic reconfiguration for implementing a multimode sensor. Additionally, the device is provided as a complete platform solution including reference hardware design, software drivers, sample configurations, API guide, and user documentation.

AWR1243主要特性:

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 (Two Can be Used Simultaneously)

Ultra-Accurate Chirp Engine Based on Fractional-N PLL

TX Power: 12 dBm

RX Noise Figure:

15 dB (76 to 77 GHz)

16 dB (77 to 81 GHz)

Phase Noise at 1 MHz:

–94 dBc/Hz (76 to 77 GHz)

–91 dBc/Hz (77 to 81 GHz)

Built-in Calibration and Self-Test

Built-in Firmware (ROM)

Self-calibrating System Across Frequency and Temperature

Host Interface

Control Interface With External Processor Over SPI

Data Interface With External Processor Over MIPI D-PHY and CSI2 V1.1

Interrupts for Fault Reporting

ASIL B Capable

AECQ100 Qualified

AWR1243 Advanced Features

Embedded Self-monitoring With No Host Processor Involvement

Complex Baseband Architecture

Option of Cascading Multiple Devices to Increase Channel Count

Embedded Interference Detection Capability

Power Management

Built-in LDO Network for Enhanced PSRR

I/Os Support Dual Voltage 3.3 V/1.8 V

Clock Source

40.0-MHz Crystal With Internal Oscillator

Supports External Oscillator at 40 and 50 MHz

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

Supports Automotive Temperature Operating Range

AWR1243應(yīng)用:

• Automated Highway Driving

• Automatic Emergency Braking

• Adaptive Cruise Control

圖1.AWR1243功能框圖

圖2.AWR1243短中遠距離雷達框圖

圖3.AWR1243參考電路圖

圖4.AWR1243低噪音LDO電路圖

圖5.AWR1243參考電路PCB布局圖(頂層)

圖6.AWR1243參考電路PCB布局圖(頂層放大圖)

圖7.AWR1243參考電路PCB布局圖(底層)

AWR1443 BoosterPack™評估板

The AWR1443 BoosterPack™ is an easy-to-use evaluation board for the single-chip AWR1443 mmWavesensing device from TI, with direct connectivity to the TI MCU LaunchPad™ ecosystem. The evaluationboard contains everything needed to start developing on a low-power ARM®-R4F controller. Theevaluation board includes onboard emulation for programming and debugging, onboard buttons, andLEDs, for quick integration of a simple user interface. The standard 20-pin BoosterPack headers make the evaluation board compatible with a wide variety of TI MCU LaunchPads and enables easy prototyping.

The AWR1243 BoosterPack is an evaluation board for the AWR1243 mmWave high-performance frontend. The evaluation platform enables raw capture of ADC data from the front end and evaluation of RFperformance.

AWR1443 BoosterPack™評估板主要特性:

• 40-pin LaunchPad standard that leverages the LaunchPad ecosystem

• XDS110-based JTAG emulation with serial port, for onboard QSPI flash programming (for AWR1443)

• Backchannel UART through USB to PC, for logging purposes

• Onboard antenna

• 60-pin high density (HD) connector, for raw ADC data over CSI, or the high-speed debug interface

• Onboard CAN transceiver (for AWR1443)

• One button and two LEDs, for user interaction

• 5-V power jack, to power the board

AWR1443 BoosterPack™評估板包括:

• AWR1443BOOST or AWR1243BOOST

• Mounting brackets, screws, and nuts, to allow placing the PCB vertical

• Mirco USB cable to connect to the PC

圖8.AWR1443 BoosterPack™評估板外形圖

圖9.AWR1443 BoosterPack™評估板框圖

圖10.AWR1443 BoosterPack™評估板電路圖(1)

圖11.AWR1443 BoosterPack™評估板電路圖(2)

圖12.AWR1443 BoosterPack™評估板電路圖(3)

圖13.AWR1443 BoosterPack™評估板電路圖(4)

圖14.AWR1443 BoosterPack™評估板電路圖(5)

圖15.AWR1443 BoosterPack™評估板電路圖(6)

圖16.AWR1443 BoosterPack™評估板電路圖(7)

圖17.AWR1443 BoosterPack™評估板電路圖(8)

圖18.AWR1443 BoosterPack™評估板電路圖(9)

圖19.AWR1443 BoosterPack™評估板電路圖(10)

圖20.AWR1443 BoosterPack™評估板電路圖(11)

圖21.AWR1443 BoosterPack™評估板電路圖(12)

圖22.AWR1443 BoosterPack™評估板電路圖(13)

圖23.AWR1443 BoosterPack™評估板電路圖(14)

圖24.AWR1443 BoosterPack™評估板電路圖(15)

圖25.AWR1443 BoosterPack™評估板PCB設(shè)計圖(1)

圖26.AWR1443 BoosterPack™評估板PCB設(shè)計圖(2)