QLEADTEK LR9805ST User Manual
LR9805ST
LR9805-ST
GPS Module
GPS Module
Copyright
©2006 Leadtek Research Inc. All rights reserved. No part of this publication may be reproduced, stored in a retrieval
system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise,
without the prior written consent of Leadtek Research Inc.
Trademarks
Leadtek and the Leadtek logo are registered trademarks of Leadtek Research Inc.
All other trademarks are the property of their respective owners.
Changes
The material in this document is for information only and is subject to change without notice. While reasonable efforts
have been made in the preparation of this document to assure its accuracy, Leadtek Research assumes no liability
resulting from errors or omissions in this document, or from the use of the information contained herein.
Leadtek reserves the right to make changes in the product design without reservation and without notification to its
users.
THE DOCUMENT IS PROVIDED BY LEADTEK "AS IS", AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL LEADTEK BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENT, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
Customer Support
• Visit our Web site at www.leadtek.com.tw.
• For support via e-mail, submit your question at service@leadtek.com.tw
Leadtek Research Inc. 18F, 166, Chien-Yi Rd., Chung Ho, Taipei Hsien, Taiwan (235)
Telephone: +886-(0)2 8226 5800
Fax: +886-(0)2 8226 3087
gpssales@leadtek.com.tw
gpsfae@leadtek.com.tw
Leadtek Research USA 910 Auburn Ct. Fremont, CA 94538, USA
Telephone: +510 490 8076, ext. 203
Fax: +510 490 7759
gps@leadtek.com
.
Contents
INTRODUCTION..........................................................................................................................1
FEATURES.....................................................................................................................................1
ARDWARE AND SOFTWARE .........................................................................................................1
H
ERFORMANCE ..............................................................................................................................1
P
NTERFACE ....................................................................................................................................2
I
A
DVANTAGES................................................................................................................................2
EFERENCE DESIGN.......................................................................................................................3
R
SPECIFICATIONS........................................................................................................................4
TECHNICAL SPECIFICATIONS...............................................................................................4
E
NVIRONMENTAL CHARACTERISTICS............................................................................................5
HYSICAL CHARACTERISTICS ........................................................................................................5
P
NTERFACE SPECIFICATIONS ..........................................................................................................5
I
SOFTWARE...................................................................................................................................6
ELECTRICAL SPECIFICATIONS.............................................................................................7
B
LOCK DIAGRAM ..........................................................................................................................7
INTERFACE SPECIFICATION..................................................................................................7
P
HOTOS AND PIN POSITIONS..........................................................................................................7
IN SETTINGS ................................................................................................................................8
P
MECHANICAL DIMENSIONS................................................... ... .............................................9
O
UTLINE DRAWING ( UNIT : MM ) .................................................................................................9
OTTOM VIEW ( UNIT : MM ) ........................................................................................................10
B
ECOMMENDED FOOTPRINT ( UNIT : MM ) ..................................................................................11
R
AUTOMATED MANUFACTURING COMPONENTS ..........................................................11
R
EEL TAPING SPECIFICATION......................................................................................................12
Tape Reel Drawing ( Unit: mm )............................................................................................12
Polystyrene Alloy Taping Specifications............................................................................... .13
Polystyrene Alloy Taping Drawing..................................................................................... .. .13
REFLOW PROFILE...................................................................................................................14
ORDERING INFORMATION...................................................................................................15
GLOSSARY..................................................................................................................................16
i
y
LR9805ST GPS Module v1.51Technical Manual
Introduction
The Leadtek LR9805ST GPS module is a high sensitivity, low power, Surface Mount Device (SMD).
This 12-channel global positioning system (GPS) receiver is designed for a broad spectrum of OEM
applications and is based on the fast and deep GPS signal search capabilities of SiRFstarII™ single
chipset. As the single chip version of the LR9805T, The LR9805ST is pin-to-pin compatible with the
LR9805-T for easier and faster transition.
The LR9805ST is designed to allow quick and easy integration into GPS-related applications such as:
• PDA, Pocket PC, and other computing devices
• Car and Marine Navigation
• Fleet Management /Asset Tracking
• AVL and Location-Based Services
• Hand-Held Device for Personal Positioning and Navigation
Features
Hardware and Software
• Based on the high performance features of the SiRFstarII single chipset
• Compact module size for easy integration: 24x20x2.9 mm (0.94x0.79x0.11 in)
• Fully automatic assembly: reflow solder assembly ready
• Hardware compatible with SiRFXTrac software
• Multiple I/O pins reserved for customizing special user applications
• RoHS compliance
Performance
• Cold/Warm/Hot Start Time: 45/35/4 sec at open sky and stationary environments
• Reacquisition Time: 0.1 second
• RF Metal Shield for best performance in noisy environments
• Multi-path Mitigation Hardware
© 2006 Leadtek Research Inc. All rights reserved. Page 1/19
Preliminar
Confidential - Information is subject to change without prior notice.
y
LR9805ST GPS Module v1.51Technical Manual
Interface
• TTL level serial port for GPS communications interface
• Protocol: NMEA-0183 / SiRF Binary (default NMEA)
• Baud Rate: 4800, 9600, 19200, 38400 or 57600 bps (default 4800)
Advantages
• Ideal for high volume mass production(Taping reel package)
• Cost saving through elimination of RF and board to board digital connectors
• Flexible and cost effective hardware design for different application needs
• Secure SMD PCB mounting method
© 2006 Leadtek Research Inc. All rights reserved. Page 2/19
Preliminar
Confidential - Information is subject to change without prior notice.
y
LR9805ST GPS Module v1.51Technical Manual
Reference design
All ground pads attach directly to ground plane by way of via.
All components are reference only.
© 2006 Leadtek Research Inc. All rights reserved. Page 3/19
Preliminar
Confidential - Information is subject to change without prior notice.
y
LR9805ST GPS Module v1.51Technical Manual
Specifications
Technical Specifications
Feature Item Description
Chipset
General
Accuracy
Datum
Time to First Fix (TTFF)
( Open Sky and
Stationary Environment )
Dynamic Conditions
Power
Serial Port
Time-1PPS Pulse
GSC2x Series SiRFstarII single chip technology
Frequency L1, 1575.42 MHz
C/A code 1.023 MHz chip rate
Channels 12
Position
Velocity 0.1 meters/second
Time 1 microsecond synchronized to GPS time
Default WGS-84
Other selectable for other Datum
Reacquisition 0.1 sec., average
Hot start 4 sec., average typical TTFF
Warm start 35 sec., average typical TTFF
Cold start 45 sec., average typical TTFF
Altitude 18,000 meters (60,000 feet) max.
Velocity 515 meters/second (1000 knots) max.
Acceleration 4g, max.
Jerk 20 meters/second3, max.
Main power input 3.3 ± 0.3VDC input
Power consumption
Supply Current
Backup Power 1.5 ± 0.1V DC input.
Electrical interface Two full duplex serial TTL interface.
Protocol messages NMEA-0183@4800 bps (Default)
Level TTL
Pulse duration 1 µs
Time reference At the pulse positive edge.
Measurement
10 meters, 2D RMS
5 meters 2D RMS, WAAS corrected
<5meters(50%), DGPS corrected
≈106 mW (continuous mode)
≈32 mA
Aligned to GPS second, ±1 microsecond
© 2006 Leadtek Research Inc. All rights reserved. Page 4/19
Preliminar
Confidential - Information is subject to change without prior notice.
Loading...