Leadtek LR9101X Specification Sheet

i

LEADTEK GPS MODULE

LR9101X

Specifications Sheet

Features:

ALL INFORMATION CONTAINED HEREIN IS THE SOLE PROPERTY OF LEADTEK RESEARCH AND CANNOT BE DISSEMINATED WITHOUT THE EXPRESS WRITTEN CONSENT OF LEADTEK RESEARCH.

SiRF StarIII low power single chipset Compact module size for easy integration : 15 x 14 x 2.8 mm

Built-in high gain amplifier and bandpass filter RoHS compliance

Revision History:

Revision

Release Date

Issuer

Change Description

1.0

2008/10/06

J. Lee

LR9101LR9101X

1.1

2008/12/25

J. Lee

Modify the power consumption

1.2

2009/03/17

J. Lee

Upgrade to FW3.5 and add the RoHS soldering profile

1.3

2009/09/15

J. Lee

Modify the pin assignment

1.4

2009/09/30

S. Liao

Modify the pin assignment

Revision History:

Revision

Release Date

Issuer

Change Description

1.0

2008/10/06

J. Lee

LR9101LR9101X

1.1

2008/12/25

J. Lee

Modify the power consumption

1.2

2009/03/17

J. Lee

Upgrade to FW3.5 and add the RoHS soldering profile

1.3

2009/09/15

J. Lee

Modify the pin assignment

LR9101X Specifications Sheet Rev. 1.3

1. Introduction

The Leadtek LR9101X module is a high sensitivity, high gain, low power and very compact Surface Mount Device (SMD). This 20-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 SiRFStarIII GSC3f/LPx architecture, consuming . Leadtek LR9101X is designed to allow quick and easy integration into GPS-related applications, especially for compact size devices, such as:

PDA, Pocket PC and other computing devices Fleet Management / Asset Tracking AVL and Location-Based Services Hand-held Device for Personal Positioning and Navigation

1.1 Features

1.1.1 Hardware and Software

Based on the high performance features of the SiRFStar III GSC3f/LPx chipset. Built-in high gain amplifier and bandpass filter RoHS compliant (lead-free) Compact module size for easy integration: 15x14x2.8 mm (590.6x551.2x110.2 mil). SMT pads allow for fully automatic assembly processes equipment and reflow soldering SiRFLocTM Client AGPS support

1.1.2 Performance

Cold/Warm/Hot Start Time: 35 / 35 / 1 sec. Reacquisition Time: 0.1 second RF Metal Shield for best performance in noisy environments Multi-path Mitigation Hardware Enhanced Navigation Performance Improved Jamming Mitigation Improved Ephemeris Availability

LR9101X Specifications Sheet Rev. 1.3

1.1.3 Interface

TTL level serial port for GPS communications interface Protocol: NMEA-0183/SiRF Binary (default NMEA) Baud Rate: 4800 bps

1.2 Advantages

Ideal for compact size devices Data / Power / RF through surface mount pads Cost saving through elimination of RF and board to board digital connectors Flexible and cost effective hardware design for different application requirements Secure SMD PCB mounting method

LR9101X Specifications Sheet Rev. 1.3

2. Technical specifications

2.1. Module architecture

1.20 VDC

SiRF GSC3f/LPx

9101X Block Diagram

LR9101X Specifications Sheet Rev. 1.3

2.2. Hardware Features

Based on the high performance features of the SiRFStarIII GSC3f/LPx chipset Built-in high gain amplifier and bandpass filter Compact module size for easy integration: 15x14x2.8 mm (590.6x551.2x110.2 mil) SMT pads allow for fully automatic assembly processes equipment and reflow soldering RoHS compliant (lead-free)

2.3. Software Features

The firmware used on Leadtek 9101X module is GSW3.5, the software for SiRFStarIII

low power single chipset receivers and its features include: Excellent sensitivity High configurability I Hz position update rate Supports use of satellite-based augmentation systems like the US WAAS or European

EGNOS system Real-time Operating System (RTOS) friendly Capable of outputting either NMEA(default) or SiRF proprietary binary protocols Designed to accept custom user tasks executed on the integrated ARM7TDM1

processor Runs in full power operation (default) or optional power saving modes Enhanced Navigation Performance Improved Jamming Mitigation Improved Ephemeris Availability Default configuration is as follows:

Item

Description

Core of firmware

SiRF GSW3.5

Baud rate

4800 bps

Code type

NMEA-0183 ASCII

Datum

WGS-84

LR9101X Specifications Sheet Rev. 1.3

Protocol message

GGA(1s), GSA(5s), GSV(5s), RMC(1s),VTG(1s)

Output frequency

1 Hz

2.4. Mechanical specification

The Physical dimensions of the Leadtek 9101X GPS Module are as follow:

Items

Description

Length

15.0 ± 0.3 mm

Width

14.0 ± 0.3 mm

Height

2.80 ± 0.3 mm

Weight

1.8 g

LR9101X Specifications Sheet Rev. 1.3

2.5. Recommended GPS Antenna Specification

This LR9101X receiver is designed for use with passive antenna.

Parameter

Specification

Antenna Type

Right-hand circular polarized passive antenna

Frequency Range

1575.42 ± 1.023 MHz

2.6. Environmental Specification

Item

Description

Operating temperature rang

-30 deg. C to +85 deg. C

Storage temperature range

-55 deg. C to +100 deg. C

Humidity up to 95% non-condensing or a wet

bulb temperature of +35 deg. C

Altitude

18,000 meters (60,000 feet) max.

Velocity

515 meters/second (1000 knots) max.

Jerk

20 meters/second3, max.

Acceleration

4g, max.

2.7. ESD Specification

Air Discharge: 2 ; 4 ; 8KV ( direct ) Contact Discharge: 2 ; 4 KV ( direct / indirect )

LR9101X Specifications Sheet Rev. 1.3

2.8. Reference design

All ground pads attach directly to ground plane by way of via. All components are reference only. Recommendation for the external antenna: antennas over 16dB.

LR9101X Specifications Sheet Rev. 1.3

3. Performance Characteristics

3.1. Position and velocity accuracy

Accuracy

Position

10 meters, 2D RMS 5 meters 2D RMS, WAAS corrected <5meters(50%)

Velocity

0.1 meters/second

Time

1 microsecond synchronized to GPS time

3.2. Dynamic constrains

Dynamic

Conditions

Altitude

18,000 meters (60,000 feet) max.

Velocity

515 meters/second (1000 knots) max.

Acceleration

4g, max.

Jerk

20 meters/second3, max.

3.3. Acquisition time 1

Mode

Leadtek 9101X

GPS Module

TTFF Hot

(valid almanac, position, time & ephemeris)

1 s

TTFF Warm

(valid almanac, position, & time)

35 s

TTFF Cold

(valid almanac)

35 s

re-acquisition

(<10 s obstruction with valid almanac, position,

time & ephemeris)

100 ms

Note 1: Open Sky and Stationary Environments.

LR9101X Specifications Sheet Rev. 1.3

3.4. Timing 1PPS output

The 1PPS pulse width is 1 μs, this 1PPS is NOT suited to steer various oscillators (timing receivers, telecommunications system, etc).

3.5. Sensitivity

Parameter

Description

Tracking Sensitivity

-159 dBm

Acquisition Sensitivity

-155 dBm

3.6. Battery backup (SRAM/RTC backup)

During ‘Powered down’ condition, the SRAM and RTC (Real Time Clock may be kept

operation by supplying power from VBATT. The Leadtek 9101X GPS module can accept slow VBATT supply rise time (unlike many other SiRFstarII based receivers) due to an on-board voltage detector.

3.7. Differential aiding

3.7.1. Differential GPS (DGPS) Optional

DGPS specification improves the Leadtek 9101X GPS Module horizontal position accuracy to <4M 2dRMS.

3.7.2. Satellite Based augmentation System (WASS/EGONS) Optional

The Leadtek 9101X GPS Module is capable of receive SBAS(WASS and EGONS) differential corrections. SBAS improves horizontal position accuracy by correcting GPS signal errors caused by ionospheric Disturbances, timing and satellite orbit errors.

Both SBAS and DGPS should improve position accuracy. However, other factors can affect accuracy, such as GDOP, multipath, distance from DGPS reference station and latency of corrections.

LR9101X Specifications Sheet Rev. 1.3

4. Hardware Interface Power supply

Parameter

Leadtek 9101X GPS Module

Input voltage

3.2~ 5.0 VDC

Current (typ.) at full power (3.3V)

33mA

Battery backup voltage

1.5~5.0 VDC

4.1. Power Consumption

Status

Power Consumption

Acquisitioning

33 mA

Tracking

33 mA

LR9101X Specifications Sheet Rev. 1.3

4.2. Specifications

4.2.1. Pin Positions

LR9101X Specifications Sheet Rev. 1.3

4.2.2. Pin Assignment

Name

Type

Description

1

RF_Gnd

PWR

RF Ground

2

RF_IN

RF

RF input

3

VSS

PWR

Ground

4

RESETN

I

System reset (active low); In normal operation this pad should be left floating. Active pull-up is not recommended

5

VCC_IN

PWR

3.2 ~ 5.0 VDC input

6

VSTBY

PWR

1.5 ~ 5.0 VDC RTC backup battery supply

7

RXB

I

TTL level asynchronous input for UART B. If not used, keep floating

8

TXB

O

TTL level asynchronous output for UART B. If not used, keep floating

9

GND

PWR

Ground

10

TXA

O

TTL level asynchronous output for UART A

11

RXA

I

TTL level asynchronous input for UART A

12

NC

Not connected, keep floating

13

NC

Not connected, keep floating

14

TIMEMARK

O

1 PPS time mark output. If not used, keep floating

15

NC

Not connected, keep floating

16

GPS Status

O

*Please refer to the diagram below. If not used, keep floating

LR9101X Specifications Sheet Rev. 1.3

5. Software interface

The host serial I/O port of the module’s serial data interface supports full duplex communication between the module and the user. The default serials are shown in Table 5-1.

Port

Protocol

Description

Port A

NMEA 0183 4800 bps

GGA(1s), GSA(5s), GSV(5s), RMC(5s), VTG(1s)

Port B

N/A

Table 5-1 Leadtek 9101X GPS module default baud rates

5.1. NMEA output messages

The output NMEA (0183 v3.0) messages for the receiver are listed in Table 5-2. A complete

description of each message is contained in the SiRF NMEA reference manual.

Option

Description

GGA

Time, position, and fix related data for a GPS receiver.

GLL

Latitude and longitude of present position, time of position fix and status.

GSA

GPS receiver operating mode, satellites used in the position solution, and DOP values.

GSV

The number of GPS satellites in view satellite ID numbers, elevation, azimuth, and SNR values.

RMC

Time, date, position, course and speed data provided by the GPS receiver.

VTG

The actual course and speed relative to the ground.

Table 5-2 NMEA-0183 Output messages

5.2. SiRF binary

A complete description of each binary message is contained in the Leadtek SiRF Binary

Protocol reference manual.

LR9101X Specifications Sheet Rev. 1.3

6. Mechanical drawing and footprint

Items

Description

Length

15.0 ± 0.3 mm (590.6 ± 12 mil)

Width

14.0 ± 0.3 mm (551.2 ± 12 mil)

Height

2.80 ± 0.3 mm (110.2 ± 12 mil)

6.1. Outline Drawing

LR9101X Specifications Sheet Rev. 1.3

6.2. Recommended footprint ( Top view )

.

Note: 1. Tolerance of recommended pad: 1.87 * 0.92 (+/- 0.1 mm )

2. Recommended pad for pin 9 is 2.3 * 1.5 mm ( +/- 0.1 mm )

7. Application Notes

 LR9101X is a compact-sized GPS module, specific for patch antenna design. It has the

pin- to-pin compatibility with LR9102, which is specific for active antenna design.

 It requires additional power supply with 3.3V externally, in case of using active antenna.

LR9101X Specifications Sheet Rev. 1.3

8. Automated manufacturing components

8.1. 8.1 Reel and taping specifications

(Unit: mm)

LR9101X Specifications Sheet Rev. 1.3

8.2. Polystyrene Alloy Taping Specifications

10 sprocket hole pitch cumulative tolerance ±0.20mm Carrier camber is within 1mm in 100mm A0 and B0 measured on a plane 0.3mm above the bottom of the pocket K0 measured from a plane on the inside bottom of the pocket to the top surface of the

carrier All dimensions meet EIA-481-2 requirements 22” 1R= 63M 3000PCS 13”21M 1000PCS

8.3. Polystyrene Alloy Taping Drawing

LR9101X Specifications Sheet Rev. 1.3

9. RoHS soldering profile

9.1 Reflow profile

High quality, low defect soldering requires identifying the optimum temperature profile for reflowing the solder paste. To have the correct profile assures components, boards, and solder joints are not damaged and reliable solder connection is achievable. Profiles are essential for establishing and maintaining processes. You must be able to repeat the profile to achieve process consistency. The heating and cooling rise rates must be compatible with the solder paste and components. The amount of time that the assembly is exposed to certain temperatures must first be defined and then maintained.

Average ramp-up rate

3℃/second max.

Preheat (Tsmax – Tsmin, ts)

150~200℃ ; 60~180seconds

Time maintained above ( TL, tL)

217℃ ; 60~150seconds

Peak Temperature (Tp)

255~260℃ ; 10~20seconds

Ramp-down rate

6℃/second max.

Time 25℃ to Peak Temperature

8 minutes max.

Maximum number of reflow cycles

≤3

LR9101X Specifications Sheet Rev. 1.3

9.2 Storage & baking condition

1. Calculated shelf life in sealed bag: 6 months at <40℃ and <90% relative humidity(RH).

2. After bag is opened, devices that will be subjected to reflow soldering or other high

temperature process must be:

a. Mounted within: 24 hours of factory conditions ≤30℃ /60% RH, or b. Stored at <10% RH under the protection against humidity and static electricity

3. Devices require bake before mounting, if: a. Humidity indicator Card is >60% when read at 23±5℃

b. 2a or 2b not met

4. If baking is required, devices may be baked for 24 hours at 125±5℃ Note: if device containers cannot be subjected to high temperature or if shorter bake times

are desired, reference IPC/JEDEC J-STD-020 for bake procedure

TCXO

16.369M Hz

Leadtek LR9101X Specification Sheet

Specifications and Main Features

Frequently Asked Questions

User Manual