AN11734 Maximum RF Input Power BGU6101 Rev. 1 — 10 September 2015 Application note Document information Info Content Keywords BGU6101, MMIC LNA, Maximum RF Input Power Abstract This document provides RF and DC test results by applying large RF input power. AN11734 NXP Semiconductors Maximum RF Input Power Test Revision history Rev Date Description 1 First publication 20150910 Contact information For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: [email protected] AN11734 Application note All information provided in this document is subject to legal disclaimers. Rev. 1 — 10 September 2015 © NXP B.V. 2015. All rights reserved. 2 of 11 AN11734 NXP Semiconductors Maximum RF Input Power Test 1. Introduction This document provides application examples and measurement results for large RF input signals using the BGU6101. 2. RF input power test on BGU6101 The test circuit shown in this document is using the BGU6101 and the input is matched between 1.8 – 2.2GHz (output is not matched). The Supply voltage is 4V and the bias current is set to 6mA. The test is done with and without series resistor of 50 ohm (MMIC Vcc is 3.7V) in the Vsupply line. The input power is swept at 1.9 GHz from -20dBm up to 15dBm and kept for 2 hours at 15dBm in gain (Venable=Vcc) and 2 hours in off mode (Venable=0V). After the test with 15dBm input power at 1.9GHz (17dB input return loss) the MMIC is tested on the Network analyzer on functionality. AN11734 Application note All information provided in this document is subject to legal disclaimers. Rev. 1 — 10 September 2015 © NXP B.V. 2015. All rights reserved. 3 of 11 AN11734 NXP Semiconductors Maximum RF Input Power Test Fig 1. BGU6101 maximum RF input power test circuit +15dBm @ 1.9 GHz The input of the BGU6101 is matched on the test frequency (RL in > 10dB), output is not matched. Additional resistor (R2) is used to reduce the current caused by self-biasing at large input power. AN11734 Application note All information provided in this document is subject to legal disclaimers. Rev. 1 — 10 September 2015 © NXP B.V. 2015. All rights reserved. 4 of 11 AN11734 NXP Semiconductors Maximum RF Input Power Test BOM BGA6101 input match at 2GHz COMPONENT Value Function C1 N.C. C2 2.2pF matching C3 1.8pF matching C4 4.7nF decoupling C5 4.7nF decoupling C6 47pF dc-block L1 3.3nH matching L2 27nH bias R1 5k Rbias R2 50R Icc limit Fig 2. AN11734 Application note BGU6101 BOM for 2GHz input matching All information provided in this document is subject to legal disclaimers. Rev. 1 — 10 September 2015 © NXP B.V. 2015. All rights reserved. 5 of 11 AN11734 NXP Semiconductors Maximum RF Input Power Test 3. Test results with R2 = 50 ohm BGU6101 Pin vs Pout & Icc (Vsupply =4V ; Vcc=3.7V ; Icc=6mA) Test frequency 1.9GHz Test frequency 2GHz Pin [dBm] Pout [dBm] Icc [mA] Vcc [V] Pout [dBm] Icc [mA] Vcc [V] -30 -13.4 6 3.7 -14.2 6 3.7 -25 -8.5 6 3.7 -9.2 6 3.7 -20 -3.8 6 3.7 -4.5 6 3.7 -16 -0.5 6.1 3.7 -1.2 6.1 3.7 -15 0.1 6.1 3.7 -0.5 6.1 3.7 -10 2.6 6.6 3.7 2.2 6.5 3.7 -5 4.6 7.5 3.6 4.3 7.5 3.6 0 6.8 9.2 3.5 6.5 9.2 3.5 5 12.2 19.1 3 11.5 16.9 3.1 10 14.4 36.7 2.2 14.3 34.7 2.3 15 14.5 44.3 1.8 14.5 42.2 1.9 AN11734 Application note Fig 3. BGU6101 maximum RF input power versus Pout and Icc test results (P1dB in red) Fig 4. BGU6101 S-parameter before and after 2 hours +15dBm RF input power test All information provided in this document is subject to legal disclaimers. Rev. 1 — 10 September 2015 © NXP B.V. 2015. All rights reserved. 6 of 11 AN11734 NXP Semiconductors Maximum RF Input Power Test 4. Test results with R2=0 ohm (not recommended) and R1=6 kohm BGU6101 Pin vs Pout & Icc (Vsupply =4V; Icc=6mA; @1.9GHz) Gain mode (Venable=Vcc) OFF mode (Venable =0V) Pin [dBm] Pout [dBm] Icc [mA] Vcc [V] Pout [dBm] Icc [mA] Vcc [V] -30 -12.9 6 4 -57 0.004 4 -25 -8 6 4 -52 0.004 4 -20 -3.4 6 4 -47 0.004 4 -17 -1 6 4 -15 0.3 6.1 4 -42 0.004 4 -10 2.6 6.5 4 -37 0.004 4 -5 4.3 7.5 4 -32.5 0.004 4 0 6.6 9.2 4 -27.6 0.004 4 5 12.3 18.9 4 10.6 13.7 4 10 16.2 44.8 4 16 41.8 4 15 17.9 64.5 4 17.7 61.5 4 AN11734 Application note Fig 5. BGU6101 maximum RF input power versus Pout and Icc test results (P1dB in red) Fig 6. BGU6101 S-parameter before and after 2 hours +15dBm RF input power test in gain (Venable=Vcc) and off mode (Venable=0V) All information provided in this document is subject to legal disclaimers. Rev. 1 — 10 September 2015 © NXP B.V. 2015. All rights reserved. 7 of 11 AN11734 NXP Semiconductors Maximum RF Input Power Test 5. Conclusion After 2 hours stress with 15dBm at RF input using the input matched BGU6101, no changes on S-parameter and DC-biasing observed. The test is done with R2=50 ohm and R2=0 ohm series resistor at the Vcc in gain and OFF mode. To minimize the self-biasing (increase of Icc) we recommend additional series resistor R2 at the Vsupply, for details see the test schematic Fig.1. In case of using the 50ohm series resistor at the Vsupply and different control voltage at the Venable can lead to voltage difference between Vcc and Venable higher than 1.8V (Venable max = Vcc + 1.8V) and internal ESD protection diodes can start to conduct. To protect the ESD diodes we recommend to use series resistor to limit the current on the Venable pin to max 20mA (5mA recommended) or limit the Venable voltage for gain mode to max. 2V (min. 1.2V). AN11734 Application note All information provided in this document is subject to legal disclaimers. Rev. 1 — 10 September 2015 © NXP B.V. 2015. All rights reserved. 8 of 11 AN11734 NXP Semiconductors Maximum RF Input Power Test 6. Legal information 6.1 Definitions Draft — The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. NXP Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. 6.2 Disclaimers Limited warranty and liability — Information in this document is believed to be accurate and reliable. However, NXP Semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. 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Customer is responsible for doing all necessary testing for the customer’s applications and products using NXP Semiconductors products in order to avoid a default of the applications and the products or of the application or use by customer’s third party customer(s). NXP does not accept any liability in this respect. Export control — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from national authorities. Evaluation products — This product is provided on an “as is” and “with all faults” basis for evaluation purposes only. NXP Semiconductors, its affiliates and their suppliers expressly disclaim all warranties, whether express, implied or statutory, including but not limited to the implied warranties of noninfringement, merchantability and fitness for a particular purpose. The entire risk as to the quality, or arising out of the use or performance, of this product remains with customer. In no event shall NXP Semiconductors, its affiliates or their suppliers be liable to customer for any special, indirect, consequential, punitive or incidental damages (including without limitation damages for loss of business, business interruption, loss of use, loss of data or information, and the like) arising out the use of or inability to use the product, whether or not based on tort (including negligence), strict liability, breach of contract, breach of warranty or any other theory, even if advised of the possibility of such damages. Notwithstanding any damages that customer might incur for any reason whatsoever (including without limitation, all damages referenced above and all direct or general damages), the entire liability of NXP Semiconductors, its affiliates and their suppliers and customer’s exclusive remedy for all of the foregoing shall be limited to actual damages incurred by customer based on reasonable reliance up to the greater of the amount actually paid by customer for the product or five dollars (US$5.00). The foregoing limitations, exclusions and disclaimers shall apply to the maximum extent permitted by applicable law, even if any remedy fails of its essential purpose. 6.3 Trademarks Notice: All referenced brands, product names, service names and trademarks are property of their respective owners. All information provided in this document is subject to legal disclaimers. Rev. 1 — 10 September 2015 © NXP B.V. 2015. All rights reserved. 9 of 11 AN11734 NXP Semiconductors Maximum RF Input Power Test 7. List of figures Fig 1. Fig 2. Fig 3. Fig 4. Fig 5. Fig 6. BGU6101 maximum RF input power test circuit +15dBm @ 1.9 GHz .......................................... 4 BGU6101 BOM for 2GHz input matching ......... 5 BGU6101 maximum RF input power versus Pout and Icc test results (P1dB in red) .............. 6 BGU6101 S-parameter before and after 2 hours +15dBm RF input power test ............................ 6 BGU6101 maximum RF input power versus Pout and Icc test results (P1dB in red) .............. 7 BGU6101 S-parameter before and after 2 hours +15dBm RF input power test in gain (Venable=Vcc) and off mode (Venable=0V) ..... 7 AN11734 Application note All information provided in this document is subject to legal disclaimers. Rev. 1 — 10 September 2015 © NXP B.V. 2015. All rights reserved. 10 of 11 AN11734 NXP Semiconductors Maximum RF Input Power Test 8. Contents 1. 2. 3. 4. 5. 6. 6.1 6.2 6.3 7. 8. Introduction ......................................................... 3 RF input power test on BGU6101....................... 3 Test results with R2 = 50 ohm ............................ 6 Test results with R2=0 ohm (not recommended) and R1=6 kohm ......................... 7 Conclusion ........................................................... 8 Legal information ................................................ 9 Definitions .......................................................... 9 Disclaimers......................................................... 9 Trademarks ........................................................ 9 List of figures..................................................... 10 Contents ............................................................. 11 Please be aware that important notices concerning this document and the product(s) described herein, have been included in the section 'Legal information'. © NXP B.V. 2015. All rights reserved. For more information, visit: http://www.nxp.com For sales office addresses, please send an email to: [email protected] Date of release: 10 September 2015 Document identifier: AN11734