Datasheet ADAR1000 (Analog Devices)

8 GHz to 16 GHz, 4-Channel, X Band and Ku Band Beamformer Data Sheet ADAR1000 FEATURES GENERAL DESCRIPTION 8 GHz to 16 GHz frequency range
The ADAR1000 is a 4-channel, X and Ku frequency band,
Half-duplex for transmit and receive modes
beamforming core chip for phased arrays. This device operates
Single-pin transmit and receive control
in half-duplex between receive and transmit modes. In receive
360° phase adjustment range
mode, input signals pass through four receive channels and are
2.8° phase resolution
combined in a common RF_IO pin. In transmit mode, the
≥31 dB gain adjustment range
RF_IO input signal is split and passes through the four transmit
≤0.5 dB gain resolution
channels. In both modes, the ADAR1000 provides a ≥31 dB gain
Bias and control for external transmit and receive modules
adjustment range and a ful 360° phase adjustment range in the
Memory for 121 prestored beam positions
radio frequency (RF) path, with 6-bit resolution (less than ≤0.5 dB
Four −20 dBm to +10 dBm power detectors
and 2.8°, respectively).
Integrated temperature sensor
A simple 4-wire serial port interface (SPI) controls all of the
Integrated 8-bit ADC for power detectors and temperature sensor
on-chip registers. In addition, two address pins allow SPI
Programmable bias modes
control of up to four devices on the same serial lines. Dedicated
4-wire SPI interface
transmit and receive load pins also provide synchronization of
APPLICATIONS
all core chips in the same array, and a single pin controls fast
Phased array radar
switching between the transmit and receive modes.
Satellite communications systems
The ADAR1000 is available in a compact, 88-terminal, 7 mm × 7 mm, LGA package and is specified from −40°C to +85°C.
FUNCTIONAL BLOCK DIAGRAM S G O _P _NE 1 2 3 4 L N G G G G W W O DD1 DD3 A_O R_S R_S R_P AV AV CRE CRE CRE CRE P T T T TRANSMIT/RECEIVE REGULATORS TO PA BIAS AND CONTROL ADAR1000 LNA_BIAS BIAS PA_BIAS2 PA BIAS LNA BIAS PA BIAS PA_BIAS3 ADC DET3 RX2 TX3 TX2 RX3 DET2 ADC ADC DET4 RX1 TX4 TX1 RX4 DET1 ADC SPI ADC PA BIAS PA_BIAS4 PA SPI PA_BIAS1 TEMPERATURE BIAS ADC SENSOR K O B D O DO DI TR AD _I ND CL CS S O G S S LOA RF
001
ADDR0 ADDR1 _ _L TX RX
16790- Figure 1.
Rev. A Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2018–2019 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline Features Applications General Description Functional Block Diagram Revision History Specifications Timing Specifications Timing Diagrams SPI Block Write Mode SPI Write All Mode Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation RF Path Phase and Gain Control Power Detectors External Amplifier Bias DACs External Switch Control Transmit and Receive Control RF Subcircuit Bias Control and Enables ADC Operation Chip Addressing Memory Access Calibration Applications Information Gain Control Registers Switched Attenuator Control Phase Control Registers Transmit and Receive Subcircuit Control TR_SOURCE = 1 (TR Pin Control) TR_SOURCE = 0 (SPI Control) Transmit and Receive Switch Driver Control PA Bias Output Control LNA Bias Output Control Transmit/Receive Delay Control Transmit and Receive Mode Switching SPI Programming Example Powering the ADAR1000 Register Map Register Descriptions Outline Dimensions Ordering Guide