ADPA9002-EVALZ User Guide UG-1637 One Technology Way * P.O. Box 9106 * Norwood, MA 02062-9106, U.S.A. * Tel: 781.329.4700 * Fax: 781.461.3113 * www.analog.com Evaluating the GaAs, pHEMT, MMIC, Single Positive Supply, DC to 10 GHz Power Amplifier +85C operating temperature range of the ADPA9002. To calibrate board trace losses, a through calibration path is provided between the J5 and J6 connectors. J5 and J6 must be populated with RF connectors to use the through calibration path. Refer to Table 2 and Figure 3 for the through calibration path performance. FEATURES Dual-layer Rogers 4350 evaluation board with heat sink End launch, 2.9 mm, RF connectors Through calibration path EVALUATION KIT CONTENTS ADPA9002-EVALZ evaluation board The device ground path and gate control voltage are accessed through the 4-pin headers, J3 and J4 (see Table 1 for header connections). EQUIPMENT NEEDED RF signal generator RF spectrum analyzer RF network analyzer 12 V and 1 A power supply -2 V and 100 mA power supply GENERAL DESCRIPTION The ADPA9002-EVALZ consists of a dual-layer printed circuit board (PCB) fabricated from 10 mil thick, Rogers 4350B, copper clad mounted to an aluminum heat sink. The heat sink assists in providing thermal relief to the ADPA9002 as well as mechanical support to the PCB. Mounting holes on the heat sink allow attachment to larger heat sinks for improved thermal management. The RFIN and RFOUT ports on the ADPA9002EVALZ are populated with 2.9 mm, female, coaxial connectors (J1 and J2) and the corresponding RF traces have a 50 characteristic impedance. The ADPA9002-EVALZ is populated with components suitable for use over the entire -40C to PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. The RF traces on the ADPA9002-EVALZ are 50 , grounded coplanar waveguide. The package ground leads and the exposed pad connect directly to the ground plane. Multiple vias connect the top and bottom ground planes with particular focus on the area directly beneath the ground paddle to provide adequate electrical conduction and thermal conduction to the heat sink. The power supply decoupling capacitors on the ADPA9002EVALZ represent the configuration that was used to characterize and qualify the device. A scope can be used to reduce the number of capacitors, but the scope varies from system to system. It is recommended to first remove or combine the largest capacitors that are farthest from the ADPA9002 when modifying the capacitor configurations. For full details on the ADPA9002, see the ADPA9002 data sheet, which must be consulted in conjunction with this user guide when using the ADPA9002-EVALZ. Rev. A | Page 1 of 6 UG-1637 ADPA9002-EVALZ User Guide TABLE OF CONTENTS Features .............................................................................................. 1 Power-Up ........................................................................................4 Evaluation Kit Contents ................................................................... 1 Power-Down ..................................................................................4 Equipment Needed ........................................................................... 1 Evaluation Board Schematic and Artwork.....................................5 General Description ......................................................................... 1 Ordering Information .......................................................................6 Revision History ............................................................................... 2 Bill of Materials ..............................................................................6 Evaluation Board Photographs ....................................................... 3 Operating the ADPA9002-EVALZ ................................................. 4 REVISION HISTORY 7/2020--Rev. 0 to Rev. A Changed Operating the ADPA7006-EVALZ Section Heading to Operating the ADPA9002-EVALZ ................................................. 4 10/2019--Revision 0: Initial Version Rev. A | Page 2 of 6 ADPA9002-EVALZ User Guide UG-1637 21494-001 EVALUATION BOARD PHOTOGRAPHS 21494-002 Figure 1. ADPA9002-EVALZ Primary Side Figure 2. ADPA9002-EVALZ Secondary Side Rev. A | Page 3 of 6 UG-1637 ADPA9002-EVALZ User Guide OPERATING THE ADPA9002-EVALZ The ADPA9002 operates in either self biased mode or externally biased mode. Ground the VGG1 pin through the J4 headers to operate in self biased mode. To operate in externally biased mode, adjust the VGG1 voltage through the J4 headers to be from -2 V to +0.5 V to set the desired quiescent current (IDQ). POWER-UP Connect all device GND pins to dc ground and RF ground. Set the drain voltage to 12 V through the RFOUT/VDD pin. Apply the RF signal through the RFIN port. The biasing sequence to use for externally biased operation during power-up is as follows: 1. 2. 3. 4. 5. Connector J3 J4 J4 Header 1, 2, 3, 4 2, 4 1, 3 ADPA9002 Pin Not connected GND VGG1 Table 2. Insertion Loss of Through Calibration Path The biasing sequence to use for self biased operation during power-up is as follows: 1. 2. 3. Table 1. J3 and J4 Header Connections to ADPA9002 Connect all device GND pins to dc ground and RF ground. Set the gate voltage to -2 V through the VGG1 pin. Set the RFOUT/VDD voltage to 12 V. Gradually adjust the VGG1 voltage to achieve the IDQ. Apply the RF signal through the RFIN port. Frequency (GHz) 0.01 0.160 1 2 3 4 5 6 7 8 9 10 Insertion Loss (dB) 0.00 -0.07 -0.24 -0.36 -0.48 -0.45 -0.5 -0.55 -0.61 -0.64 -0.65 -0.65 POWER-DOWN The biasing sequence to use for self biased operation during power-down is as follows: The biasing sequence to use for externally biased operation during power-down is as follows: 1. 2. 3. 4. Turn off the RF signal. Decrease the VGG1 voltage to -2 V to achieve a typical IDQ of 0 mA. Set the RFOUT/VDD voltage to 0 V. Set the VGG1 pin voltage to 0 V. -5 INSERTION LOSS INPUT RETURN LOSS OUTPUT RETURN LOSS -10 -15 -20 -25 -30 -35 -40 -45 -50 0 1 2 3 4 5 6 7 8 9 10 FREQUENCY (GHz) Figure 3. Insertion Loss and Return Loss of Through Calibration Path Rev. A | Page 4 of 6 21494-003 Turn off the RF signal. Set the RFOUT/VDD voltage to 0 V. INSERTION LOSS AND RETURN LOSS (dB) 1. 2. 0 ADPA9002-EVALZ User Guide UG-1637 EVALUATION BOARD SCHEMATIC AND ARTWORK DNI J3 C1 100pF 4 2 R1 0 AGND 3 1 PAD 32 31 30 29 28 27 26 25 C2 DNI AGND AGND 1 2 3 4 5 6 7 8 RFIN GND NIC GND RFOUT/VDD GND NIC NIC GND GND NIC NIC GND RFIN GND NIC GND AGND C9 4.7F AGND 24 23 22 21 20 19 18 17 J2 RFOUT AGND GND NIC NIC NIC VGG1 NIC ACG3 GND J1 U1 PAD GND NIC ACG1 ACG2 NIC NIC NIC GND C6 DNI AGND + C5 10000pF CNTL AGND ADPA9002ACGZN 9 10 11 12 13 14 15 16 AGND J4 4 2 3 1 VGG1 C11 4.7F AGND C7 10000pF C3 100pF C4 100pF C8 10000pF AGND AGND AGND AGND C10 4.7F AGND AGND DNI J6 THROUGH CALIBRATION AGND 21494-004 DNI J5 AGND Figure 4. ADPA9002-EVALZ Schematic THRU CAL J5 J6 C1 C5 J3 + C6 C2 R1 + C10 C3 C7 C11 J2 U1 C4 C8 RFIN J1 C9 600-01711-00-1 GND CTNL + J4 21494-005 GND VGG Figure 5. ADPA9002-EVALZ Assembly Drawing (J3, J5, and J6 Not Installed) Rev. A | Page 5 of 6 UG-1637 ADPA9002-EVALZ User Guide ORDERING INFORMATION BILL OF MATERIALS Table 3. Reference Designator C1, C3, C4 C2, C6 C9, C10, C11 C5, C7, C8 J1, J2 J3 J4 J5, J6 R1 U1 Not Applicable Description Ceramic capacitors, 100 pF Ceramic capacitors, not installed Tantalum capacitors, 4.7 F Ceramic capacitors, multilayer, X8R, 10000 pF Connectors, 2.9 mm, jack edge Connector, PCB header, vertical, dual row, 4-position, 2 mm pitch, not installed Connector, PCB header, vertical, dual-row, 4-position, 2 mm pitch Connectors, 2.9 mm, jack edge, not installed Resistor, 0402, surface-mount device (SMD) chip jumper, 0 Gallium arsenide (GaAs), pseudomorphic high electron mobility transistor (pHEMT), monolithic microwave integrated circuit (MMIC), dc to 10 GHz, power amplifier Aluminum heatsink, 0.75 in x 1.9 in Manufacturer Johanson Dialectrics Not applicable AVX Murata SRI Connector Gage Co. Molex Part Number 500R07N101JV4T Not applicable TAJA475K020RNJ GRM155R71H103KA88D 25-146-1000-92 87759-0414 Molex SRI Connector Gage Co. Panasonic Analog Devices, Inc. 87759-0414 25-146-1000-92 ERJ-2GEJ104X ADPA9002ACGZN Not applicable Not applicable ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality. Legal Terms and Conditions 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. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you ("Customer") and Analog Devices, Inc. ("ADI"), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term "Third Party" includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board. Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED "AS IS" AND ADI MAKES NO WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER'S POSSESSION OR USE OF THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI'S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed. (c)2019-2020 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. UG21494-7/20(A) Rev. A | Page 6 of 6