Features and Benefits
- Integrated baluns for single-ended receiver (Rx) inputs and local oscillator (LO) input
- Rx channel gain: 22 dB
- Noise figure (NF): 10 dB
- P1dB: −10 dBm
- LO input range: −8 dBm to +5 dBm
- Rx to IF isolation: 30 dB
- RF signal bandwidth: 250 MHz
- Rx output impedance: 900 Ω differential
- LO input buffer: 24 GHz
- RF and LO S11 at 50 Ω: −5 dB
- Temperature sensor with analog output: ±5°
- Electrostatic discharge (ESD) performance
- Human body model (HBM): 2000 V
- Charged device model (CDM): 500 V
- Qualified for automotive applications
The ADF5904 is a 4-channel, 24 GHz, receiver downconverter. Each channel contains a single-ended RF input with an on-chip balun followed by a differential low noise amplifier (LNA) and a downconverter mixer with differential output buffers. The RF LO path also has an on-chip balun.
Control of the on-chip registers is through a simple 3-wire interface.
The ADF5904 comes in a compact 32-lead, 5 mm × 5 mm LFCSP package.
- Automotive radars
- Industrial radars
- Microwave (µW) radar sensors
Markets and Technologies
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (3)
The EV-ADF5904SD2Z evaluation board allows the user to evaluate the performance of the ADF5904 24 GHz receiver downconverter. Figure 1 shows the board, which contains the ADF5904, five high frequency SMA connectors for the local oscillator (LO) input, four receiver (Rx) inputs, eight SMA connectors for the baseband outputs, banana connectors for power supply, and a connector for serial interface.
The evaluation kit also contains software that is compatible with Windows® XP and later versions to allow easy programming of the device.
This evaluation board requires an EVAL-SDP-CS1Z SDP-S board (not supplied with the kit). The SDP-S board allows software programming of the ADF5904 device.
Full specifications on the ADF5904 are available in the product data sheet, which should be consulted in conjunction with this user guide when working with the evaluation board.
The EV-RADAR-MMIC2 evaluation board is designed to evaluate the performance of the ADF5901, a 24 GHz transmitter (Tx) monolithic microwave integrated circuit (MMIC); the ADF5904, a 24 GHz receiver (Rx) MMIC; and the ADF4159, a 13 GHz phase-locked loop (PLL) for a frequency modulated continuous wave (FMCW) radar system.
The EV-ADAR-D2S adapter board contains the eight AD8129 differential receiver amplifiers that convert the baseband ADF5904 differential signals to single-ended signals with a 20 dB gain.
The evaluation kit also contains the Analog Devices EV-RADAR-MMIC Software, which is compatible with Windows® XP and later Windows versions to allow easy programming of the device.
The EV-RADAR-MMIC2 evaluation board requires an SDP-S or SDP-B board (not supplied with the kit). The SDP board allows software programming of all the devices.
Full specifications for the ADF5901, ADF5904, and ADF4159 are listed in the ADF5901 data sheet, the ADF5904 data sheet, and the ADF4159 data sheet available from Analog Devices and should be consulted in conjunction with UG-866 when using the evaluation board.
The 24 GHz radar sensor platform called Demorad is a novel microwave radar evaluation platform solution with out-of-the-box software examples and easy startup of radar sensor all done within minutes. Demorad platform enables rapid product prototyping aimed at R&D interests in investigating radar and developing radar sensor products that can measure real-time information such as target/object presence, its movement, angular position, velocity, and range from the sensor.
The Demorad platform provides both hardware and software that allows for very fast evaluation and development of 24 GHz radar without the need to have RF microwave and signal chain system expertize, and significantly reduces development time and system expertize during product development phases.
A high performance RF and analog full signal chain including DSP processing, that is, an RF to bits solution is provided that allows for flexible processing on raw acquisition data, allowing radar experiments on a state-of-the art level hardware in a very short time.
Full software support of 24 GHz radar ICs using a software graphical user interface (GUI) and in DSP radar support function libraries with added capability to write raw data for post processing on PC using Matlab tools.
Figure 1. Demorad 24GHz Evaluation Software Window showing Range-Doppler mode.
The Demorad uses ADI’s 24 GHz, multichannel radar solution. The sensor consists of a single PCB with 2 transmitter/4 receiver antennas on the front side connected to the 24 GHz RF chipset and data acquisition ADC’s and DSP on the reverse side. This forms the basis for a reference design that customers can use to build their final product design.
Figure 2. Demorad full signal chain.
The Demorad uses FMCW radar to detect range and velocity of objects up to 200 m away with a resolution of approximately 75 cm. The field of view (FOV) is approximately 120° in azimuth and 15° in elevation based on the antenna array design. By combining antennas as used in digital beam forming (DBF), the Demorad uses DBF to calculate angular information in the FOV.
Figure 3. Demorad system setup.
- Traffic monitoring and car parking
- UAV/drone collision avoidance and altimeters
- Monitoring and security systems
Features & Benefits
This evaluation board is obsolete and no longer recommended. The replacement board is the TinyRad Demonstration Platform.
- Out-of-the-box Radar demonstration platform.
- Evaluates 24GHz Radar chipset
- Antenna to bits functionality.
- Accompanying software GUI to evaluate:
- Range Doppler
- Digital Beam Forming.
Software & Systems Requirements
Tools & Simulations
Product Selection Guide (1)
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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