ADI公司的ADF5902是24GHz微波集成電路(MMIC)發(fā)送器(TX),集成了24GHz壓控振蕩器(VCO),具有分數(shù)N頻率合成器和可編柵陣列(PGA)和用在雷達系統(tǒng)的兩路發(fā)送器。每個發(fā)送器包括功率控制電路和片上溫度傳感器??刂仆ㄟ^4線串行外設(shè)接口(SPI)進行,主要用在汽車雷達,工業(yè)雷達和微波雷達傳感器。本文介紹了ADF5902主要特性,功能框圖,F(xiàn)MCW雷達框圖以及評估板EV-ADF5902SD1Z主要特性,電路圖,材料清單和PCB設(shè)計圖。
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應用:
Automotive radars
Industrial radars
Microwave radar sensors
圖1.ADF5902功能框圖
圖2.采用ADF5902的FMCW雷達框圖
評估板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.
評估板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
評估板EV-ADF5902SD1Z包括:
EVAL-ADPD2140Z standard evaluation board
USB-C cable
圖3.評估板EV-ADF5902SD1Z外形圖
圖4.評估板EV-ADF5902SD1Z建立圖
圖5.評估板EV-ADF5902SD1Z電路圖(1)
圖6.評估板EV-ADF5902SD1Z電路圖(2)
圖7.評估板EV-ADF5902SD1Z電路圖(3)
圖8.評估板EV-ADF5902SD1Z電路圖(4)
圖9.評估板EV-ADF5902SD1Z電路圖(5)
圖10.評估板EV-ADF5902SD1Z電路圖(6)
圖11.評估板EV-ADF5902SD1Z電路圖(7)
評估板EV-ADF5902SD1Z材料清單:
圖12.評估板EV-ADF5902SD1Z PCB設(shè)計圖(1):頂層
圖13.評估板EV-ADF5902SD1Z PCB設(shè)計圖(2):底層
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