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Product Bulletin
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Ultimate Accuracy with the
Atheros FYX™ Location Core |
AR1520 Overview
The Atheros AR1520, featuring the new Atheros FYX™ location core, delivers unmatched navigation accuracy, high sensitivity, fast location fixes, low power consumption and affordability. This precision GPS
system consists of the AR1520 IC, the Atheros FYX location core and the host-based navigation software
- The AR1520 is a highly-integrated, single-chip GPS receiver combining the functionality of a single-conversion GPS RF front-end with an advanced GPS baseband processor.
- The new Atheros FYX location core features a unique dual-engine technology for fast location fixes, unmatched navigation accuracy and low power consumption. Atheros patented search and tracking
engines deliver superior performance in a silicon-efficient package that actually reduces solution cost.
- The Atheros FYX 1.0 navigation software now includes Atheros ESP™ technology, which reduces warm start TTFF to less than 10 seconds for up to 5 days, with no network connection required.
Unmatched Navigation Accuracy
- The heart of the AR1520 solution is the new Atheros FYX Location Core that utilizes a unique dual-engine design, with search engines for fast fixes and dedicated tracking engines for precision navigation.
- The search engines have been optimized for navigation-intensive applications such as personal navigation devices, net-books, smart-books, portable games and media players, and smart phones. They can be run as 8 separate search engines for quicker reacquisition times or combined into one powerful engine for fast startup searches.
- In demanding tunnel-exit situations, these flexible search engines, combined with Atheros Fast Fix Qualification Logic deliver faster and more accurate first fixes.
- The dedicated tracking engines are optimized for tightly tracking weak or highly dynamic signals, rejecting multi-path and providing consistent, accurate measurements.
- In demanding urban canyon environments, the dedicated tracking engines deliver more precise location and heading results.
- When combined with Atheros Variable PDI and High Clock Drift Tolerant software, the dedicated tracking engines also reduce BOM cost by allowing the use of lower grade TCXO’s.
- High tracking sensitivity (-162 dBm) ensures reliable navigation when signals are attenuated due to smaller antennas, metalized glass windshields, heavy foliage or skyscrapers.
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AR1520 Specifications |
| Peripheral Interface |
2 High Speed UARTs with DMA (to 920 K)
I2C Master (up to 400 KHz)
I2C Slave (up to 400 KHz)
15 GPIO ports for external I/O
47-bit RTC with battery backup
TCXO power switch
Timers, counters, and pulse generators,
1.8 V and 3 V I/O compatibility |
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| Supported TCXO Frequencies |
16.369, 19.2, 26.0 MHz |
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| Sensitivity |
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| Autonomous Cold Start Acquisition |
-147 dBm |
| Always-Ready Acquisition |
better than -157 dBm |
| Hot Start Acquisition |
162 dBm |
| Autonomous Tracking |
-162 dBM |
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| Positional Accuracy (CEP50) |
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| Autonomous Positional Error |
<1.0 m |
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| Velocity Accuracy (30 m/s) |
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| Speed |
<0.02 m/s |
| Heading |
<0.2 deg |
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| Time to First Fix (50% @ -130 dBm) |
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| Hot Start |
<1.5 s |
| Always-Ready Start |
<1.5 s, typical, depending on use case |
| ESP Start |
<10 s, typical |
| Cold Start |
<33 s |
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| Power |
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| Continuous Tracking |
<45 mW @ 1.8 V (<30 mW core power) |
| Low Power Tracking |
<10 mW |
| Always-Ready Tracking Mode |
<1 mW, typical |
| Battery Backed-up RTC |
5 uW |
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| Physical Specifications |
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| 4.2mm x4.2mm |
CSP-56 ball (500um pitch) |
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| Ordering Information |
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| AR1520A-BF1B |
CSP |
| AR1520A-BF1B-R |
CSP Tape and Reel |
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For more information on Atheros and Atheros GPS Technology please visit www.atheros.com
Specification subject to change © 2010 Atheros Communications, Inc. all rights reserved
Atheros and the Atheros logo are registered trademarks of Atheros Communications, Inc. FYX, Atheros ESP and Atheros Always-Ready are trademarks of Atheros Communications, Inc.
All other trademarks and trade names are those of their respective owners
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