- 8 GHz to 16 GHz frequency range
- Half-duplex for transmit and receive modes
- Single-pin transmit and receive control
- 360° phase adjustment range
- 2.8° phase resolution
- ≥31 dB gain adjustment range
- ≤0.5 dB gain resolution
- Bias and control for external transmit and receive modules
- Memory for 121 prestored beam positions
- Four −20 dBm to +10 dBm power detectors
- Integrated temperature sensor
- Integrated 8-bit ADC for power detectors and temperature sensor
- Programmable bias modes
- 4-wire SPI interface
The ADAR1000 is a 4-channel, X and Ku frequency band, beamforming core chip for phased arrays. This device operates in half-duplex between receive and transmit modes. In receive mode, input signals pass through four receive channels and are combined in a common RF_IO pin. In transmit mode, the RF_IO input signal is split and passes through the four transmit channels. In both modes, the ADAR1000 provides a ≥31 dB gain adjustment range and a full 360° phase adjustment range in the radio frequency (RF) path, with better than 6-bit resolution (less than ≤0.5 dB and 2.8°, respectively).
Control of all the on-chip registers is through a simple 4-wire serial port interface (SPI). In addition, two address pins allow SPI control of up to four devices on the same serial lines. Additionally, dedicated transmit and receive load pins provide synchronization of all core chips in the same array, and a single pin controls fast switching between the transmit and receive modes.
The ADAR1000 is available in a compact, 88-terminal, 7 mm × 7 mm, LGA package and is specified from −40°C to +85°C.
- Phased Array Radar
- Satellite Communications Systems
The ADAR1000-EVALZ evaluation board is designed for evaluating the performance of the ADAR1000, a 4-channel, X band and Ku band beamforming core chip for radar systems. All the radio frequency (RF) input/output channels and detector inputs are brought out to Subminiature Version A (SMA) connectors. On-board logic level translators convert the on-chip 1.8 V logic signals to 3.3 V for interfacing to external controllers running on 3.3 V. Two identical 20-pin, dual row rectangular headers provide the digital interface signals to allow daisy-chaining up to four ADAR1000-EVALZ evaluation boards together. A 24-pin connector provides control and bias outputs to interface to four external transmit and receive (T/R) modules with each ADAR1000-EVALZ evaluation board.
The ADAR1000-EVALZ evaluation board can be used with an Analog Devices, Inc., system demonstration platform (SDP) SDP-S or SDP-B board (supplied separately), which allows connection to a Microsoft Windows®-based PC through the USB for controlling of all the ADAR1000 device functions.
For full details on the ADAR1000, see the ADAR1000 data sheet, which should be consulted in conjunction with this user guide when using this evaluation board.
- Based on the ADAR1000 4-channel beamformer core chip
- Controllable through SPI
- Multiple forms of digital interface (3.3 V and 1.8 V logic)
- On-board logic level translators with 1.8 V low dropout regulator for supply
- Software control from a Windows-based PC through USB
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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