中国电子技术网

设为首页 网站地图 加入收藏

 

[原创] ADI ADF5902 24GHz汽车雷达(MMIC)解决方案

关键词:微波发送器 MMIC 雷达(汽车雷达 工业雷达) 雷达传感器 ADF5902

时间:2019-01-07 11:17:13       作者:ADI       来源:中电网

ADI公司的ADF5902是24GHz微波集成电路(MMIC)发送器(TX),集成了24GHz压控振荡器(VCO),具有分数N频率合成器和可编栅阵列(PGA)和用在雷达系统的两路发送器.每个发送器包括功率控制电路和片上温度传感器.控制通过4线串行外设接口(SPI)进行,主要用在汽车雷达,工业雷达和微波雷达传感器.本文介绍了ADF5902主要特性,功能框图,FMCW雷达框图以及评估板EV-ADF5902SD1Z主要特性,电路图,材料清单和PCB设计图.

The ADF5902 is a 24 GHz transmitter (Tx) monolithic microwave integrated circuit (MMIC) with an on-chip, 24 GHz voltage controlled oscillator (VCO). The VCO features a fractional-N frequency synthesizer with waveform generation capability with programmable grid array (PGA) and dual transmitter channels for radar systems. The on-chip, 24 GHz VCO generates the 24 GHz signal for the two transmitter channels and the local oscillator (LO) output. Each transmitter channel contains a power control circuit. There is also an on-chip temperature sensor. Control of all the on-chip registers is through a simple, 4-wire serial peripheral interface (SPI). The ADF5902 comes in a compact, 32-lead, 5 mm×5 mm LFCSP package.

ADF5902主要特性:

24 GHz to 24.25 GHz VCO (industrial, scientific, and medical(ISM)radio band)
2-channel 24 GHz power amplifier with 8 dbm output
Single-ended outputs
2-channel muxed outputs with mute function
Programmable output power
LO output buffer
RF frequency range: 24 GHz to 24.25 GHz
Power control detector
Auxiliary 8-bit ADC
High and low speed
FMCW ramp generation
25-bit fixed modulus allows subhertz frequency resolution
PFD frequencies up to 110 MHz
Normalized phase noise floor of −222 dBc/Hz
Programmable charge pump currents
±5℃ temperature sensor
4-wire SPI
ESD performance
HBM: 2000 V
CDM: 250 V
Qualified for automotive applications

ADF5902应用:

Automotive radars
Industrial radars
Microwave radar sensors

图1.ADF5902功能框图

图2.采用ADF5902的FMCW雷达框图

评估板EV-ADF5902SD1Z

The EV-ADF5902SD1Z evaluation board allows the user to evaluate the performance of the ADF5902 24 GHz voltage controlled oscillator (VCO) programmable gain amplifier (PGA) with a 2-channel power amplifier (PA) output and ramping phase-locked loop (PLL). Figure 1 shows the EV-ADF5902SD1Z evaluation board, which contains the ADF5902, three high frequency K type Subminiature Version A (SMA) connectors for the local oscillator (LO) output, two transceiver outputs, banana connectors for the power supply, and a connector for the serial interface.

The EV-ADF5902SD1Z evaluation board requires an EVAL-SDP-CS1Z system demonstration platform serial (SDP-S) controller board, which the kit does not include. The EVAL-SDP-CS1Z SDP-S allows software programming of the ADF5902 device.

Full specifications on the ADF5902 are available in the ADF5902 data sheet. Consult the data sheet in conjunction with this user guide when working with the EV-ADF5902SDIZ evaluation board. The Windows®-based PLL software provides easy programming of the synthesizer.

评估板EV-ADF5902SD1Z主要特性:

ADPD2140 full configuration
Register level
Parameter level
Graph views
Time series view
Gesture recognition view
Triangulation view
UDP transfer capability

评估板EV-ADF5902SD1Z包括:

EVAL-ADPD2140Z standard evaluation board
USB-C cable

图3.评估板EV-ADF5902SD1Z外形图

图4.评估板EV-ADF5902SD1Z建立图

图5.评估板EV-ADF5902SD1Z电路图(1)

图6.评估板EV-ADF5902SD1Z电路图(2)

图7.评估板EV-ADF5902SD1Z电路图(3)

图8.评估板EV-ADF5902SD1Z电路图(4)


图9.评估板EV-ADF5902SD1Z电路图(5)

图10.评估板EV-ADF5902SD1Z电路图(6)

图11.评估板EV-ADF5902SD1Z电路图(7)
评估板EV-ADF5902SD1Z材料清单:




图12.评估板EV-ADF5902SD1Z PCB设计图(1):顶层

图13.评估板EV-ADF5902SD1Z PCB设计图(2):底层
详情请见:
https://www.analog.com/media/en/technical-documentation/data-sheets/ADF5902.pdf
https://www.analog.com/media/en/technical-documentation/user-guides/EV-ADF5902SD1Z-UG-1432.pdf
ADF5902.pdf
EV-ADF5902SD1Z-UG-1432.pdf

  • 分享到:

 

猜你喜欢