Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Related Manuals for Philips NXP BGU7004 GPS LNA
Summary of Contents for Philips NXP BGU7004 GPS LNA
- Page 1 UM10491 User manual for the BGU7004 GPS LNA evaluation board Rev. 1.0 — 14 June 2011 User manual Document information Info Content Keywords LNA, GPS, BGU7004 Abstract This document explains the BGU7004 AEC-Q100 qualified GPS low noise amplifier evaluation board...
- Page 2 UM10491 NXP Semiconductors BGU7004 GPS LNA EVB Revision history Date Description 20110614 First Release. Contact information http://www.nxp.com For additional information, please visit: For sales office addresses, please send an email to: salesaddresses@nxp.com UM10491 © NXP B.V. 2011. All rights reserved. User manual Rev.
-
Page 3: Introduction
UM10491 NXP Semiconductors BGU7004 GPS LNA EVB 1. Introduction NXP Semiconductors’ BGU7004 is an AEC-Q100 qualified low-noise amplifier for GPS receiver applications in a plastic, leadless 6 pin, extremely thin small outline SOT886 package. It has a gain of 16.5 dB gain and a noise figure of 0.8 dB, It has superior linearity performance to suppress interference and noise from co-habitation cellular transmitters while retaining sensitivity. -
Page 4: General Description
UM10491 NXP Semiconductors BGU7004 GPS LNA EVB 2. General description NXP Semiconductors’ BGU7004 GPS low noise amplifier is dedicated for the GPS frequency band. The integrated biasing circuit is temperature stabilized, which maintains a constant current over temperature. It also enables the superior linearity performance of the BGU7004. -
Page 5: Application Circuit
UM10491 NXP Semiconductors BGU7004 GPS LNA EVB 3.1 Application Circuit The circuit diagram of the evaluation board is shown in Fig 2. With jumper JU1 the enable pin can be controlled to either to V or GND. Fig 2. Circuit diagram of the BGU7004 evaluation board 3.2 Board Layout Fig 3. -
Page 6: Pcb Layout
UM10491 NXP Semiconductors BGU7004 GPS LNA EVB 3.3 PCB layout A good PCB layout is an essential part of an RF circuit design. The evaluation board of the BGU7004 can serve as a guideline for laying out a board using the BGU7004. Use controlled impedance lines for all high frequency inputs and outputs. -
Page 7: Required Equipment
UM10491 NXP Semiconductors BGU7004 GPS LNA EVB 4. Required Equipment In order to measure the evaluation board the following is necessary: DC Power Supply up to 30 mA at 1.5 V to 2.85 V; Two RF signal generators capable of generating an RF signal at the operating ... -
Page 8: Linearity
UM10491 NXP Semiconductors BGU7004 GPS LNA EVB 9. For noise under jamming conditions, the following is needed. A 15dB ENR noise source, a directional coupler, GPS band pass filter, a noise-figure analyzer or a spectrum analyzer with noise option can be used. See Fig 12 Fig 5. -
Page 9: In-Band 1Db Gain Compression Due To 850 Mhz And 1850 Mhz Jammers
UM10491 NXP Semiconductors BGU7004 GPS LNA EVB Fig 6. O-IIP3 at V = 1.5 V Fig 7. O-IIP3 at V = 1.8 V Fig 8. O-IIP3 at V = 2.85 V 6.2 In-band 1dB gain compression due to 850 MHz and 1850 MHz jammers As already stated before, signal levels in the GPS frequency band of –130 dBm average will not cause linearity problems in the GPS band itself. - Page 10 UM10491 NXP Semiconductors BGU7004 GPS LNA EVB Fig 9. Setup for 1 dB compression with jammers The gain was measured in the GPS frequency band between port 1 and 2, while simultaneously a jammer power signal was swept on port 3. Please note that the drive power of the jammer is 20 dB lower at the input of the DUT caused by the directional coupler.
-
Page 11: Noise Figure As Function Of Jammer Power At 850 Mhz And 1850 Mhz
UM10491 NXP Semiconductors BGU7004 GPS LNA EVB -25.00 16.289 -25.00 16.288 • 9.30 15.286 • 14.42 15.289 Trc1 dB Mag 1 dB / Ref 16 dB Cal int PCax Trc1 dB Mag 1 dB / Ref 16 dB Cal int PCax Ch1 Arb Channel Base Start -25 dBm Freq 1.575 GHz Stop 15 dBm... - Page 12 UM10491 NXP Semiconductors BGU7004 GPS LNA EVB (1) Jammer frequency is 850 MHz (2) Jammer frequency is 1850 MHz Fig 13. NF at 1.575 GHz versus jammer power Fig 14. NF at 1.575 GHz versus jammer power UM10491 © NXP B.V. 2011. All rights reserved. User manual Rev.
-
Page 13: Typical Evaluation Board Results
UM10491 NXP Semiconductors BGU7004 GPS LNA EVB 8. Typical evaluation board results Table 2, typical results measured on the Evaluation Boards. Operating Frequency is f=1575.42MHz unless otherwise specified; Temp = 25 C. Parameter Symbol BGU7004 BGU7004 BGU7004 Unit Remarks Supply Voltage 2.85 Supply Current Noise Figure... -
Page 14: Legal Information
UM10491 NXP Semiconductors BGU7004 GPS LNA EVB 9. Legal information space or life support equipment, nor in applications where failure or 9.1 Definitions malfunction of a NXP Semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental Draft —... -
Page 15: Table Of Contents
UM10491 NXP Semiconductors BGU7004 GPS LNA EVB 10. Contents Introduction ............3 General description ..........4 Application Board ..........4 Application Circuit ..........5 Board Layout ............5 PCB layout ............6 Bill of materials ............6 3.4.1 Series inductor ............6 Required Equipment ...........