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Leadtek LR9805ST User Manual

Gps module
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LR9805ST
LR9805-ST
GPS Module
GPS Module

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Summary of Contents for Leadtek LR9805ST

  • Page 1 LR9805ST LR9805-ST GPS Module GPS Module...
  • Page 2 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.

  • Page 3: Table Of Contents

    Contents INTRODUCTION..........................1 FEATURES.............................1 ......................1 ARDWARE AND OFTWARE ..........................1 ERFORMANCE ............................2 NTERFACE ..........................2 DVANTAGES ........................3 EFERENCE DESIGN SPECIFICATIONS........................4 TECHNICAL SPECIFICATIONS....................4 ....................5 NVIRONMENTAL HARACTERISTICS ......................5 HYSICAL HARACTERISTICS ......................5 NTERFACE PECIFICATIONS SOFTWARE ...........................6 ELECTRICAL SPECIFICATIONS.....................7 ..........................7 LOCK IAGRAM INTERFACE SPECIFICATION....................7 ......................7 HOTOS AND OSITIONS ..........................8 ETTINGS...

  • Page 4: Introduction

    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.

  • Page 5: Interface

    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 Preliminary Confidential - Information is subject to change without prior notice.

  • Page 6: Reference Design

    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 Preliminary Confidential - Information is subject to change without prior notice.

  • Page 7: Specifications

    Time-1PPS Pulse Pulse duration 1 µs Time reference At the pulse positive edge. Aligned to GPS second, ±1 microsecond Measurement © 2006 Leadtek Research Inc. All rights reserved. Page 4/19 Preliminary Confidential - Information is subject to change without prior notice.

  • Page 8: Environmental Characteristics

    20 mm (0.79 in) Height 2.9 mm (0.11 in) Weight 2.5g Interface Specifications Items Description 28 pin SMD micro package © 2006 Leadtek Research Inc. All rights reserved. Page 5/19 Preliminary Confidential - Information is subject to change without prior notice.

  • Page 9: Software

    LR9805ST GPS Module v1.51Technical Manual Software The Leadtek LR9805ST module includes SiRFXTrac high sensitivity software solution. Features include: • High tracking sensitivity (-154 dBm) • High configurability • 1 Hz position update rate • Real-time Operating System (RTOS) friendly •...

  • Page 10: Electrical Specifications

    Electrical Specifications Block Diagram Interface Specification Photos and Pin Positions Pin 15 Pin 28 Serial Model Pin 1 Pin 14 © 2006 Leadtek Research Inc. All rights reserved. Page 7/19 Preliminary Confidential - Information is subject to change without prior notice.

  • Page 11: Pin Settings

    Pull low for programming mode. If not used, keep floating ANTPWR Antenna power input Ground RFIN RF Signal input Ground © 2006 Leadtek Research Inc. All rights reserved. Page 8/19 Preliminary Confidential - Information is subject to change without prior notice.

  • Page 12: Mechanical Dimensions

    Mechanical Dimensions Length 24.0 ± 0.4 mm Outline Drawing Tolerance: Width 20.0 ± 0.1 mm Height 2.90 ± 0.1 mm © 2006 Leadtek Research Inc. All rights reserved. Page 9/19 Preliminary Confidential - Information is subject to change without prior notice.

  • Page 13: Bottom View ( Unit : Mm )

    LR9805ST GPS Module v1.51Technical Manual Bottom view ( unit : mm ) © 2006 Leadtek Research Inc. All rights reserved. Page 10/19 Preliminary Confidential - Information is subject to change without prior notice.

  • Page 14: Recommended Footprint ( Unit : Mm )

    LR9805ST GPS Module v1.51Technical Manual Recommended Footprint ( Unit : mm ) Automated Manufacturing Components © 2006 Leadtek Research Inc. All rights reserved. Page 11/19 Preliminary Confidential - Information is subject to change without prior notice.

  • Page 15: Reel Taping Specification

    • Surface resistivity 10 – 10 Ω/□ • Quantity per reel: 1000 pcs./reel Tape Reel Drawing ( Unit: mm ) © 2006 Leadtek Research Inc. All rights reserved. Page 12/19 Preliminary Confidential - Information is subject to change without prior notice.

  • Page 16: Polystyrene Alloy Taping Specifications

    Packing length per 22” reel: 50.0 Meters (1:2) Component load per 15” reel: 1000 pcs. (SUR-56-3-XL) Polystyrene Alloy Taping Drawing © 2006 Leadtek Research Inc. All rights reserved. Page 13/19 Preliminary Confidential - Information is subject to change without prior notice.

  • Page 17: Reflow Profile

    The following is an example of a typical thermal profile. © 2006 Leadtek Research Inc. All rights reserved. Page 14/19 Preliminary Confidential - Information is subject to change without prior notice.

  • Page 18: Ordering Information

    LR9805ST GPS Module v1.51Technical Manual Ordering Information For every order of 1000 pcs , Leadtek will ship the modules with the reel package (shown on page 15). For order quantities less than 1000 pcs, or when ordering non-whole numbers, Leadtek will snip the taping and ship the quantity that you request without the reel.

  • Page 19: Glossary

    For Example: 250 baud means that 250 signals are transmitted in one second. If each signal carries 4 bits of information then in each second 1000 bits are transmitted. This is abbreviated as 1000 bit/s. © 2006 Leadtek Research Inc. All rights reserved. Page 16/19...
  • Page 20 The signal which traverses a longer path will yield a larger pseudo range estimate and increase the error. © 2006 Leadtek Research Inc. All rights reserved. Page 17/19 Preliminary Confidential - Information is subject to change without prior notice.
  • Page 21 TCXO reduces the environmental changes of temperature, humidity, and vibration, to keep a stable output frequency. © 2006 Leadtek Research Inc. All rights reserved. Page 18/19 Preliminary Confidential - Information is subject to change without prior notice.
  • Page 22 United States that monitor GPS satellite data. Two master stations, located on either coast, collect data from the reference stations and create a GPS correction message. © 2006 Leadtek Research Inc. All rights reserved. Page 19/19 Preliminary Confidential - Information is subject to change without prior notice.
  • Page 23 Leadtek Research Inc. 18F, 166, Chien-Yi Rd., Chung Ho, Taipei Hsien, Taiwan (235) ©2006 Leadtek Research, Inc. All rights reserved. Version 1.51 5/09/06...

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