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Evaluating the
FEATURES
Based on the
ADAR1000
4-channel beamformer
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
ADDITIONAL EQUIPMENT
PC running Windows XP or a more recent software version
SDP-S
or
SDP-B
USB interface board
Network analyzer
Power supplies: 3.3 V, −5.0 V
DOCUMENTS NEEDED
ADAR1000
data sheet
REQUIRED SOFTWARE
ADAR1000-EVALZ evaluation software
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
ADAR1000
8 GHz to 16 GHz, 4-Channel, X Band and
Ku Band Beamformer
EVALUATION BOARD PHOTOGRAPH
Figure 1.
Rev. A | Page 1 of 24
ADAR1000-EVALZ
GENERAL DESCRIPTION
The ADAR1000-EVALZ is designed for evaluating the
performance of the
ADAR1000
band beamformer for radar systems. All 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
boards together. A 24-pin connector provides control and bias
outputs to interface to four external transmit and receive
modules with each ADAR1000-EVALZ.
The ADAR1000-EVALZ can be used with an Analog Devices, Inc.,
system demonstration platform (SDP)
(supplied separately), which allows connection to a Microsoft
Windows®-based PC through the USB for controlling all
ADAR1000
device functions.
For full details on the ADAR1000, see the
sheet, which must be consulted in conjunction with this user
guide when using the ADAR1000-EVALZ.
User Guide
UG-1283
4-channel, X band and Ku
SDP-S
or
SDP-B
board
ADAR1000
data
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Table of Contents
Related Manuals for Analog Devices ADAR1000-EVALZ
Summary of Contents for Analog Devices ADAR1000-EVALZ
-
Page 1: Features
Network analyzer outputs to interface to four external transmit and receive Power supplies: 3.3 V, −5.0 V modules with each ADAR1000-EVALZ. DOCUMENTS NEEDED The ADAR1000-EVALZ can be used with an Analog Devices, Inc., system demonstration platform (SDP) SDP-S SDP-B board... -
Page 2: Table Of Contents
UG-1283 ADAR1000-EVALZ User Guide TABLE OF CONTENTS Features ..................1 Control Using the Manual Register Write ......11 Additional Equipment ..............1 Quick Test Procedure ..............13 Documents Needed ..............1 Detailed Software Description ..........14 ... -
Page 3: Evaluation Board Hardware
ADAR1000-EVALZ User Guide UG-1283 EVALUATION BOARD HARDWARE Figure 1 shows the ADAR1000-EVALZ, with 13 high frequency Table 1. External Supply Details connectors for the four transmit outputs, four receive inputs, Pin Supply Board Label Capacity four detector inputs, and a common RF input and output. Four AVDD3 +3.3... -
Page 4: Digital Input And Outputs
AVDD 3.3 V supply All internal registers and control functions of the ADAR1000- AVDD 3.3 V supply EVALZ are driven from the PC using the ADAR1000-EVALZ AGND Analog ground evaluation software. AVDD1 −5 V supply Daisy-Chain Interface Connectors... -
Page 5: T/R Module Control Signals
ADDR0 and ADDR1 pin values are high Signal or low, as shown in Table 5. Note that P10 is labeled AD0 and TR_SW_NEG AD1 on the ADAR1000-EVALZ, which corresponds to the LNA_BIAS ADDR0 and ADDR1 pins, respectively. TR_SW_POS Table 5. - Page 6 UG-1283 ADAR1000-EVALZ User Guide The ADAR1000-EVALZ has eight signals for driving switches LNA bias outputs are common to all four channels, whereas and biasing amplifiers on transmit and receive modules available each PA has an individual corresponding own bias output.
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Page 7: Evaluation Board Software Installation
ADAR1000-EVALZ User Guide UG-1283 EVALUATION BOARD SOFTWARE INSTALLATION To install the ADAR1000-EVALZ evaluation software, take the The File Manager shows the content of the zip file, as following steps: shown in Figure 5. The ADAR1000-EVALZ evaluation software zip file is... -
Page 8: Transmit And Receive Startup Using The Gui
ADAR1000-EVALZ User Guide TRANSMIT AND RECEIVE STARTUP USING THE GUI The ADAR1000-EVALZ evaluation software can be used in one phase, and bias. The following procedures bypass the RAM, of the following ways: enable transmit subcircuits, set SPI control (vs. TR pin control), place the device in transmit mode, and set transmit Channel 1 ... -
Page 9: Added Setting Transmit Bias Currents Section, Spi Control And Enabling Transmit Mode Section, Transmit Gain Control Section, Transmit Phase Control Section, Figure 9, Figure 10, Figure 11, And Figure 12
ADAR1000-EVALZ User Guide UG-1283 Setting Transmit Bias Currents Transmit Gain Control To set the nominal bias currents for the transmit variable gain To set the transmit Channel 1 gain to maximum, take the following amplifiers (VGAs), vector modulators, and drivers, take the... -
Page 10: Receive Startup
UG-1283 ADAR1000-EVALZ User Guide Transmit Load Override Enabling Receive Channels For the gain and phase changes to take effect, a load transmit To enable the receive channels and associated circuits, take the override command must be given. To give this command, take... -
Page 11: Control Using The Manual Register Write
ADAR1000-EVALZ User Guide UG-1283 SPI Control, Enabling Receive, and Receive Mode Receive Phase Control To operate in receive mode, take the following steps: To set Receive Channel 1 to 45°, take the following steps: Click the T/R Control tab (see Figure 17). -
Page 12: Added Figure 21, Figure 22, And Figure 23
UG-1283 ADAR1000-EVALZ User Guide To perform several writes that are stored in a .txt file, take the following steps: Click the Manual Register Write tab (see Figure 21). Click Choose Input File. Navigate to where the settings files are located (see Figure 22). -
Page 13: Quick Test Procedure
ADAR1000-EVALZ User Guide UG-1283 QUICK TEST PROCEDURE To use the ADAR1000-EVALZ to test and evaluate the MEASURED GAIN RX1 RETURN LOSS ADAR1000, take the following steps: RF_IO RETURN LOSS Plug the SDP adapter into the P5 connector on the ADAR1000-EVALZ. -
Page 14: Detailed Software Description
ADAR1000 device. These two bits determine CONNECTION TAB which of the four ADAR1000-EVALZ boards on the same serial bus responds to programming information from the bus. The Connection tab displays the two different SDP adapters that can be used to provide the USB interface to the ADAR1000-EVALZ (see Figure 27). -
Page 15: Tx Control Tab
Click Write Gain Values, Write Phase Values, and Write Memory Values to send the corresponding bias register setting In the Tx Gain Control section, set the gain register for each to the ADAR1000-EVALZ. transmit channel. Figure 28. Tx Control Tab Figure 29. -
Page 16: Rx Control Tab
Click Write Gain Values, Write Phase Values, and Write registers in the device (see Figure 31). Memory Values to send the corresponding register setting to the ADAR1000-EVALZ. In the Rx Gain Control section, set the gain register for each receive channel. -
Page 17: T/R Control Tab
When the check boxes are selected or cleared, click Write Enable Values or Write Switch Values in each section to write the The T/R Control tab controls the enabling of the transmit and register settings to the ADAR1000-EVALZ. receive channels (see Figure 32). GPIO TAB... -
Page 18: Misc Tab
UG-1283 ADAR1000-EVALZ User Guide MISC TAB and the LNA DAC uses the Bias ON register value. If the check box is selected while the device is in transmit mode, the In the MISC tab, configuration of miscellaneous functions is opposite is true, and the PA DACs use the Bias ON register available (see Figure 34). -
Page 19: Beam Sequencer Tab
ADAR1000-EVALZ User Guide UG-1283 BEAM SEQUENCER TAB The starting and ending memory locations (Start Point and End Point, respectively), as well as the time delay between steps The Beam Sequencer tab (see Figure 35) contains a script to (Time Delay (ms)), is entered into the corresponding fields. -
Page 20: Manual Register Write Tab
Click Write All to Enter the register address in the Register field and click Manual send the list to the ADAR1000-EVALZ. Read for the content of the register to display in the Data field. -
Page 21: Evaluation Board Schematics And Artwork
ADAR1000-EVALZ User Guide UG-1283 EVALUATION BOARD SCHEMATICS AND ARTWORK Figure 39. ADAR1000-EVALZ Evaluation Board Schematic (Page 1) Rev. A | Page 21 of 24... - Page 22 UG-1283 ADAR1000-EVALZ User Guide Figure 40. ADAR1000-EVALZ Evaluation Board Schematic (Page 2) Rev. A | Page 22 of 24...
- Page 23 ADAR1000-EVALZ User Guide UG-1283 Figure 41. Layer 1 (Component Side) Figure 42. Layer 4 (Bottom Side) Rev. A | Page 23 of 24...
- Page 24 By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement.