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Dual GPS/Galileo chips to exhibit sub-second acquisition times

Thalwil, Switzerland—GPS (Global Positioning System) receiver technology company u-blox AG is readying a u-blox 5 family of GPS and Galileo -ready single chips and chipsets. These devices, when they roll off the fab lines early next year, will exhibit acquisition performance of under one second. The company claims this speed will be the fastest on the market.

u-blox says its ultra-fast acquisition time will be due to a 50-channel GPS architecture, with over one million correlators and separate acquisition and tracking engines capable of massively parallel searches. u-blox's chips will also include what the company refers to as SuperSense , a -160-dBm acquisition and tracking sensitivity.


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These ICs will also dissipate less than 50-mW. That level of power, and with footprints smaller than 100-square millimeters, will let the u-blox 5 receivers be used in PDA s (personal digital assistants), personal navigation devices, cameras, cellphones, media players, and other battery-operated portables. Built-in power management will also feature a DC-to-DC converter that optimizes power use across a single voltage source.

The u-blox 5 devices also use a fractional-N clock synthesizer that will support common cellphone reference frequencies.

Location Support

Additionally, u-blox's newest generation silicon will support A-GPS (assisted GPS) services such as AssistNow and OMA/SUPL (Open mobile Alliance/Secure User Plane Location) standards. These ICs also exceed the performance requirements for international A-GPS standards including 3GPP TS 25.171, TIA 916 , and E911 Phase II .

u-blox 5 GPS receivers will be packaged as small-footprint single chip devices, and as chipsets. Their integrated architecture is also expected to keep cost to a minimum by reducing your bill-of-materials to as few as 17 passive external components.

A cost-optimized UBX-G5010 single chip will come in a 56-pin QFN package that will measure 8 x 8-mm. If you prefer chipsets with optional flash memory, you will be able to combine a 9 x 9-mm UBX-G5000 100-pin BGA -packaged (ball grid array) baseband chip and a 4 x 4-mm UBX-G0010 24-pin QFN RF front-end.

Both the single chip and the chipset will support passive antennas with integrated LNA s (low-noise amplifiers).

Jamming Suppression

Software will also contain an innovative jamming suppression mechanism that will automatically filter signals from interfering sources. Built-in multipath detection and an elimination mechanism will also let u-blox 5 chips work well for navigation in so-called urban canyons.

What's more, u-blox 5 products will be capable, via a software upgrade, of receiving and processing L1 Galileo signals once they become available. The combination of GPS and Galileo signals will give your products better coverage, improved reliability, and enhanced navigation accuracy.

Click here for a preliminary datasheet (in Adobe Acrobat .PDF format).

Click here for more information on u-blox 5 technology.

For more details, contact product manager Georg zur Bonsen at u-blox AG, Z¼rcherstrasse 68, 8800 Thalwil Schweiz, Switzerland. Phone: +41 44 722 74 44. E-mail: georg.zurbonsen@u-blox.com

u-blox AG , 41 44 722 74 44, www.u-blox.com

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