Evaluation Kit User s Manual. Digital Step Attenuator PE43704 and PE43705
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1 Evaluation Kit User s Manual Digital Step Attenuator PE370 and PE3705
2 Table of Contents Introduction.. 3 Applications Support. 3 Evaluation Kit Contents and Requirements 3 Kit Contents... 3 Software Requirements... 3 Hardware Requirements.. 3 PE370 and PE3705 DSA Evaluation Board Assembly Overview.... USB Interface Board... 5 USB Interface Board Overview... 5 Connection of the USB Interface Board to the Evaluation Board. 5 USB Driver Installation. 5 EVK Software Installation. 6 Using the Application Software Graphical User Interface... 9 Evaluation Board Overview.. Hardware Operation... 5 Technical Resources.. 6 Document No. DOC Page of 6
3 Introduction PE370 and PE3705 are HaRP technology-enhanced, high linearity, 7-bit RF Digital Step Attenuators (DSAs). These highly versatile DSAs cover a 3.75 db attenuation range in 0.5 db, 0.5 db, or.0 db steps. The customer can choose which step size and associated specifications are best suited for their application. PE370 and PE3705 provide multiple CMOS control interfaces which support Direct Parallel, Latch Parallel, and Serial programming modes, and PE370 has an optional external V SS feature. PE370 and PE3705 maintain high attenuation accuracy over frequency and temperature, and exhibit low broadband insertion loss and low power consumption. Performance does not change with VDD due to an on-board regulator. These DSAs are available in a 3-lead 5x5 mm QFN footprint. No blocking capacitors are required if DC voltage is not present on the RF ports. The PE370 and PE3705 Evaluation Kit (EVK) includes the application software and hardware required to control and evaluate the functionality of the DSA using a PC running the Windows operating system to control the USB interface board. Applications Support For any technical inquiries regarding the evaluation kit or software, please visit applications support at (fastest response) or call (858) Evaluation Kit Contents and Requirements Kit Contents The PE370 and PE3705 Evaluation Kit (EVK) includes all of the specific software and hardware required to evaluate the DSA. Included in the EVK are: Quantity Description PE370 and PE3705 DSA Evaluation Board Assembly (PRT-3505 ) Peregrine USB Interface Board Assembly (DOC-0635) USB.0 Type A to Type B Mini Cable Software Requirements The application software will need to be installed on a computer with the following minimum requirements: PC compatible with Windows XP, Vista, 7, or 8 Mouse USB port HTML browser with internet access Hardware Requirements In order to evaluate the step attenuation performance of the evaluation board, the following equipment is required: DC power supplies and DC cables Vector network analyzer CAUTION: The PE370 and PE3705 DSA EVK contains components that might be damaged by exposure to voltages in excess of the specified voltage, including voltages produced by electrostatic discharges. Handle the board in accordance with procedures for handling static-sensitive components. Avoid applying excessive voltages to the power supply terminals or signal inputs or outputs. Page 3 of 6 Document No. DOC-599- UltraCMOS RFIC Solutions
4 PE370 and PE3705 DSA Evaluation Board Assembly Overview The Evaluation Board is assembled with a PE370 or PE3705 DSA, SPT mechanical switch (P/S), SP3T mechanical switches (D0~D6), several headers, and SMA connectors. The P/S switch is used for Parallel or Serial mode selection. The D0~D6 switches are used for setting the control bits in Direct Parallel programming mode. Figure. PE370 or PE3705 Evaluation Board Assembly Document No. DOC Page of 6
5 USB Interface Board USB Interface Board Overview A USB interface board (Figure ) is included in the Evaluation Kit. This board allows the user to send SPI commands to the device under test by using a PC running the Windows operating system. To install the software, extract the zip file to a temporary directory and follow the installation procedure included. Figure. DSA USB Interface Board Connection of the USB Interface Board to the Evaluation Board The Evaluation Board and the USB interface board contain a keyed 6 pin header. This feature allows the USB interface board (socket) to connect directly to the Evaluation Board (pin) on the front-side as shown in Figure 3. Figure 3. DSA USB Interface Board Connected to the PE370 or PE3705 Evaluation Board for Latch Parallel and Serial Programming USB Driver Installation The latest USB interface board drivers are available via Microsoft Windows update. Internet connectivity is required to download the drivers. Connect the USB interface board to the PC and select the Windows Update option to obtain and install the drivers. Figure. USB Driver Installation If the USB board drivers are not installed, it will not be possible to run the program correctly. A USB interface board (Figure ) is included in the Evaluation Kit. Page 5 of 6 Document No. DOC-599- UltraCMOS RFIC Solutions
6 EVK Software Installation In order to evaluate the PE370 or PE3705 performance, the Application Software has to be installed on your computer. The USB interface and DSA application software is compatible with computers running Windows XP, Vista, 7, or 8. This software is available directly from Peregrine s website at To install the DSA evaluation software, unzip the archive and execute the setup.exe. Figures 5(a-c). Application Software Installation Procedure After the setup.exe file has been executed, a welcome screen will appear. It is strongly recommended that all programs be closed prior to running the install program. Click the Next> button to proceed. Take a moment to read the license agreement, then click I Agree and Next>. Document No. DOC Page 6 of 6
7 For most users the default install location for the program files is sufficient. If a different location is desired, the install program can be directed to place the program files in an alternate location. The software is installed for Everyone by default. Once the desired location is selected click Next >. Figures 5(d-f). Application Software Installation Procedure The Confirm Installation is ready to install the DSA evaluation software on your computer, then click Next> to proceed with the software installation. As the software files are installed, a progress indicator will be displayed. On slower computers, installation of the software may proceed for a few moments. Page 7 of 6 Document No. DOC-599- UltraCMOS RFIC Solutions
8 Once the evaluation software is installed, click Close to exit. Figure 5(g). Application Software Installation Procedure A new Start Menu item under Peregrine Semiconductor will appear in the start menu of your computer. Select DSA Evaluation Software to launch the GUI. Document No. DOC Page 8 of 6
9 Using the Application Software Graphical User Interface Figure 6 displays the DSA application software graphical user interface (GUI), which has the USB interface board plugged into the computer. If the USB interface board is not connected when the application software is launched, the message No interface board connected! Please connect USB-SPI Interface # will appear at the bottom of the screen. In the upper left corner, under the Peregrine Logo there is a drop down menu item to select the part for evaluation and the part description is right below the part number box. Figure 6. DSA Application Software Graphical User Interface (GUI) OR Page 9 of 6 Document No. DOC-599- UltraCMOS RFIC Solutions
10 The DSA application software GUI supports Latched Parallel and Serial modes, and shows the control bit waveform at the right side of the GUI when the mode is selected. The Send button changes functionality based on the control interface mode. Send Latch in Latched Parallel mode and Send Signal in Serial mode is provided to resend the programming bits to the device at the same attenuation state. Figure 7. Latched Parallel or Serial Mode Continuous Pattern Loop can be selected to automatically step through each of the attenuation states. The Attenuation Value box displays the attenuation value the DSA is currently programmed. The user can enter the desired attenuation value followed by the Enter key to program the DSA. Document No. DOC Page 0 of 6
11 The center of the GUI is the attenuation slide bar that allows the user to quickly select the desired attenuation. The arrows at the top and bottom can be clicked to increase or decrease attenuation state at the minimum step size. Page of 6 Document No. DOC-599- UltraCMOS RFIC Solutions
12 PE370 / PE3705 Evaluation Board Overview Figure 8. PE370 Evaluation Board Schematic J HEADER6 CO_5 3 C0_5 6 5 C VDD_DIG C C 5 P/S 6 C8CLK 3 C6/DATA 6 5 LE C5 C6 C 3 D0 C 00pF 00pF 00pF C7 D HDR HEADER X 00pF C 00pF C3 00pF 00pF VDD_DIG 3 HDR3 HEADER X DNI DNI R R 0OHM VDD C 00pF C8 0.µF 3 CP5 GND VDD 3 PS A0 5 GND 3 CP5 30 C 9 C U 8 C 7 C8 6 C6 DSA_50OHM_5X5_MLPQ3 5 SI CLK LE A A VSS 3 0 C0 00pF C9 0.µF VDD_DIG C 00pF VDD HDR A0_ A0 VDD A_ A VDD A_ A VDD VSS HEADER3X3 3 A_ A_ A0_ HDR HEADER_ D D3 D J Z=50 Ohm 6 GND 9 Z=50 Ohm /89 GND 7 RF RF 8 8 GND GND 7 DNI 9 GND 0 GND GND GND 3 GND GND 5 GND 6 GND J /89 3 D5 R3 D6 3 De-embeding trace J0 Z=50 Ohm J / /89 R 0OHM DOC-0657 Notes: NOTES:. Use PRT PCB. USE PRT CAUTION: PCB. Contains parts and assemblies susceptible to damage by electrostatic discharge (ESD). CAUTION: CONTAINS PARTS AND ASSEMBLIES SUSCEPTIBLE TO DAMAGE BYELECTROSTATIC DISCHARGE (ESD) Document No. DOC Page of 6
13 Figure 9. PE3705 Evaluation Board Schematic DOC-787 Notes:. Use PRT-3505 PCB. CAUTION: Contains parts and assemblies susceptible to damage by electrostatic discharge (ESD) Page 3 of 6 Document No. DOC-599- UltraCMOS RFIC Solutions
14 Figure 0. PE370 and PE3705 Evaluation Board Outline Showing Functional Overview High in Direct Parallel mode USB interface board connector Set for Latched Parallel/Serial mode Low in Direct Parallel mode Jumper connected A A A0 Programming switches Set to high Set to low Power supply connector Parallel/Serial mode selection RF in/out RF in/out THRU trace is for board trace loss calibration Page of 6 Document No. DOC-599- UltraCMOS RFIC Solutions
15 Hardware Operation. Verify that all DC power supplies are turned off before proceeding.. Connect the jumper on HDR. 3. Position the P/S switch to Parallel or Serial mode.. Set A0, A, and A to LOW on HDR for default setting. They can be set to HIGH or LOW for Serial Addressable mode when more of the DSAs are used. Refer to Application Note AN6 on Peregrine Semiconductor s website. 5. Set the D0~D6 programming switches to support Direct Parallel, Latched Parallel, or Serial mode. a) Place D0~D6 at the middle position to support Latched Parallel and Serial modes with GUI application software and proper position of the P/S switch. b) In Direct Parallel mode, D0~D6 can be set to HIGH or LOW to manually program the attenuation state while LE (pin 5 of J) is connected to HIGH without using the USB interface board and application software. 6. Provide external power supply to the HRD connector (refer to the Operating Ranges table in the datasheets). a) V DD is the positive power supply. b) V DD _DIG is the positive power supply for control signals and can be connected to V DD to simplify the test set-up. c) V SS is the external negative power supply for PE370. It can also be shorted to GND enabling the internal negative voltage generator and simplifying the test set-up. PE3705 does not have this option. 7. Calibrate board trace loss with THRU trace between J0 and J. Page 5 of 6 Document No. DOC-599- UltraCMOS RFIC Solutions
16 Technical Resources Additional technical resources are available for download in the Products section at These include the Product Specification datasheet, S-Parameters zip file, Evaluation Kit schematic and Bill of Materials, Material Declaration form, and PC-compatible software file. Trademarks are subject to trademark claims. The information in this document is believed to be reliable. However, Peregrine assumes no liability for the use of this information. Use shall be entirely at the user s own risk. No patent rights or licenses to any circuits described in this document are implied or granted to any third party. Peregrine s products are not designed or intended for use in devices or systems intended for surgical implant, or in other applications intended to support or sustain life, or in any application in which the failure of the Peregrine product could create a situation in which personal injury or death might occur. Peregrine assumes no liability for damages, including consequential or incidental damages, arising out of the use of its products in such applications. The Peregrine name, logo, UltraCMOS and UTSi are registered trademarks and HaRP, MultiSwitch and DuNE are trademarks of Peregrine Semiconductor Corp. All other trademarks mentioned herein are the property of their respective companies. Peregrine products are protected under one or more of the following U.S. Patents: Page 6 of 6 Document No. DOC-599- UltraCMOS RFIC Solutions
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