Lantronix A5135-H User manual

GNSS Receiver Module A5135-H
User Guide
Part Number PMD-00034
Revision B May 2020

GNSS Receiver Module A5135-H User Guide 2
Intellectual Property
© 2019-2020 Lantronix, Inc. All rights reserved. No part of the contents of this publication may
be transmitted or reproduced in any form or by any means without the written permission of
Lantronix.
Lantronix is a registered trademark of Lantronix, Inc. in the United States and other countries.
Patented: www.lantronix.com/legal/patents/. Additional patents pending.
Windows and Internet Explorer are registered trademarks of Microsoft Corporation. Firefox is
a registered trademark of the Mozilla Foundation. Chrome is a trademark of Google Inc. All
other trademarks and trade names are the property of their respective holders.
Warranty
For details on the Lantronix warranty policy, please go to our web site at
www.lantronix.com/support/warranty/
Contacts
Lantronix, Inc.
7535 Irvine Center Drive, Suite 100
Irvine, CA 92618, USA
Toll Free: 800-526-8766
Phone: [phone]
Fax: [phone]
Technical Support
Online: www.lantronix.com/support
Sales Offices
For a current list of our domestic and international sales offices, go to the Lantronix web
site at www.lantronix.com/about-us/contact/
Disclaimer
All information contained herein is provided “AS IS.” Lantronix undertakes no obligation to
update the information in this publication. Lantronix does not make, and specifically dis-
claims, all warranties of any kind (express, implied or otherwise) regarding title, non-in-
fringement, fitness, quality, accuracy, completeness, usefulness, suitability or performance
of the information provided herein. Lantronix shall have no liability whatsoever to any user
for any damages, losses and causes of action (whether in contract or in tort or otherwise) in
connection with the user’s access or usage of any of the information or content contained
herein. The information and specifications contained in this document are subject to
change without notice.

GNSS Receiver Module A5135-H User Guide 3
Open Source Software
Some applications are Open Source software licensed under the Berkeley Software Distri-
bution (BSD) license, the GNU General Public License (GPL) as published by the Free
Software Foundation (FSF), or the Python Software Foundation (PSF) License Agreement
for Python 2.7.3 (Python License). Lantronix grants you no right to receive source code to
the Open Source software; however, in some cases, rights and access to source code for
certain Open Source software may be available directly from Lantronix’ licensors. Your use
of each Open Source component or software is subject to the terms of the applicable li-
cense. The BSD license is available at http://opensource.org/licenses. The GNU General
Public License is available at http://www.gnu.org/licenses/. The Python License is available
at http://cmpt165.csil.sfu.ca/Python-Docs/license.html. Your use of each Open Source
component or software is subject to the terms of the applicable license.
OPEN SOURCE SOFTWARE IS DISTRIBUTED WITHOUT ANY WARRANTY,
INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. SEE THE APPLICABLE LICENSE AGREEMENT FOR
ADDITIONAL INFORMATION.
You may request a list of the open source components and the licenses that apply to them.
Contact your regional Lantronix sales associate. www.lantronix.com/about-us/contact/
Revision History
Date Rev. Comments
April 2014 0.1 First release
January 2015 0.2 Pin assignment updated
February 2015 0.3 Updated figures
February 2017 0.4 Update the description about the ON_OFF pin
May 2017 0.5
•Updated some sentence for easier understanding
•Fixed pin7/8 in the pin descriptions
•Added picture for label
•Edited picture to 3.3V
November 2019 A Added Lantronix document part number, Lantronix logo, branding,
contact information, and links.
May 2020 B
•Updated Table 4 pin descriptions for pins 7, 8, 16.
•Updated schematics (Figure 5 and 7), pins 17 and 18 to NC.
For the latest revision of this product document, please check our online documentation at
www.lantronix.com/support/documentation.

GNSS Receiver Module A5135-H User Guide 4
Table of Contents
Intellectual Property _______________________________________________________2
Warranty _______________________________________________________________2
Contacts________________________________________________________________2
Disclaimer ______________________________________________________________2
Open Source Software ____________________________________________________3
Revision History__________________________________________________________3
Table of Contents ________________________________________________________4
List of Figures ___________________________________________________________6
List of Tables ____________________________________________________________7
1 Introduction 8
1.1 Feature Overview _____________________________________________________8
1.2 Characteristics Overview________________________________________________9
1.3 RoHS and Lead-Free Information _________________________________________9
1.4 Label ______________________________________________________________10
1.5 Characteristics_______________________________________________________11
1.5.1 GNSS Characteristics ____________________________________________11
1.5.2 Mechanical Characteristics ________________________________________11
1.6 Handling Precautions _________________________________________________11
2 Ordering Information 12
2.1 GNSS Receiver A5135-H ______________________________________________12
2.2 Packing ____________________________________________________________12
2.3 Additional Equipment__________________________________________________14
3 Quick Start 15
3.1 Minimum Configuration ________________________________________________15
3.2 Antenna ____________________________________________________________17
3.3 Serial Port Settings ___________________________________________________17
3.4 Improved TTFF ______________________________________________________17
3.5 Self-start configuration_________________________________________________17
4 Mechanical Outline 18
4.1 Detailed Component Side A5135-H ______________________________________18
4.2 Detailed Solder Side A5135-H __________________________________________19
5 Pin-out Information 20
5.1 Layout A5135-H______________________________________________________20
5.2 Description A5135-H Signals____________________________________________21
6 Electrical Characteristics 22
6.1 Operating Conditions__________________________________________________22
6.2 Absolute Maximum Ratings_____________________________________________22

GNSS Receiver Module A5135-H User Guide 5
6.3 DC Electrical Characteristics____________________________________________23
7 Mounting 24
7.1 Proposed Footprint for Soldering ________________________________________24
7.2 PCB Design Guide ___________________________________________________24
7.3 Recommended Profile for Reflow Soldering ________________________________25
8 Use of External Antenna 26
8.1 Connection of RF Signal _______________________________________________26
8.2 External Antenna _____________________________________________________27
8.2.1 Recommended Parameters ________________________________________27
8.2.2 Hints __________________________________________________________27
9 Quality and Reliability 28
9.1 Environmental Conditions ______________________________________________28
9.2 Product Qualification __________________________________________________28
9.3 Production Test ______________________________________________________28
10 Applications and Hints 29
10.1 Initial Module Start___________________________________________________29
10.2 Proper Shutdown____________________________________________________29
10.3 SiRFawareTM Support ________________________________________________29
10.4 Push-to-Fix Mode ___________________________________________________29
10.5 Hibernate Mode _____________________________________________________29
10.6 Extended Ephemeris _________________________________________________30
10.7 TM_GPIO5 pin (1 pulse per second pin)__________________________________30
10.8 5 Hz Navigation Update Rate __________________________________________31
11 Evaluation Kit EVA5135-H 32
12 Related Information 33
12.1 Related Documents __________________________________________________33
12.2 Related Tools ______________________________________________________33

GNSS Receiver Module A5135-H User Guide 6
List of Figures
Figure 1: A5135-H label ............................................................................................10
Figure 2: A5135-H tape specifications (1) .................................................................12
Figure 3: A5135-H tape specifications (2) .................................................................13
Figure 4: A5135-H tape specifications (3) .................................................................13
Figure 5: Minimum configuration A5135-H ................................................................15
Figure 6: RS232 level shifter for minimum configurations .........................................16
Figure 7: Self-start configuration A5135-H ................................................................17
Figure 8: Mechanical outline component side A5135-H ............................................18
Figure 9: Mechanical outline solder side A5135-H ....................................................19
Figure 10: Pin-out information (top view) A5135-H ...................................................20
Figure 11: Proposal of Soldering footprint.................................................................24
Figure 12: Proposal (1) of the PCB design...............................................................24
Figure 13: Proposal (2) of the PCB design................................................................25
Figure 14: Antenna connector strip line A5135-H......................................................26
Figure 15: Strip line parameters A5135-H.................................................................26
Figure 16: 1PPS waveform (reference).....................................................................31
Figure 17: Evaluation kit EVA5135-H........................................................................32

GNSS Receiver Module A5135-H User Guide 7
List of Tables
Table 1: A5135-H GNSS characteristics ...................................................................11
Table 2: A5135-H dimensions and weight.................................................................11
Table 3: Additional equipment...................................................................................14
Table 4: Pin description A5135-H..............................................................................21
Table 5: A5135-H electrical characteristics ...............................................................22
Table 6: Absolute maximum ratings ..........................................................................22
Table 7: DC electrical characteristics ........................................................................23
Table 8: Reflow soldering profile A5135-H ................................................................25
Table 9: Environmental conditions ............................................................................28

GNSS Receiver Module A5135-H User Guide 8
1 Introduction
A5135-H is an antenna module with SiRFstarV™ Flash based chip and an on-board
patch antenna (15mm x 15mm x 4mm). It is a new version of our existing A2035-H &
A2235-H with new GNSS support. To support an easier migration for existing cus-
tomers, we kept the same pin assignment.
Please take care that since there is a RF feed point underneath the module, special
PCB design is required on user’s application.
The A5135-H is a module designed for a 3.3V environment.
1.1 Feature Overview
The A5135-H is a new module with the following outstanding features.
•Fast, responsive location experience
oHigh-sensitive navigation engine with tracking down to -165dBm
o52 track verification channels
oSBAS (WAAS, EGNOS, MSAS, GAGAN)
oConcurrent tracking of multiple constellations of the GPS and
GLONASS systems
•Breakthrough micro power technology
oRequires only 50 – 500µA to maintain hot start capability
•Active jammer remover
oRemoves in-band jammers up to 80dB/Hz
oTracks up to eight CW (continuous wave) jammers
•Size: 17.8mm (L) x 16.5mm (W) x 7.1mm (H)
•Operating voltage: 3V3
•Extremely low power consumption by using DC/DC converter
•No back-up battery required
•TCXO is used for providing stable 26MHz system clock
•Support external active antenna
•Support SGEE and CGEE
•Build-in LNA with close to 20dB for the patch antenna

1: Introduction
GNSS Receiver Module A5135-H User Guide 9
1.2 Characteristics Overview
The module’s most important characteristics are:
•A5135-H
oOperable at 3.3V / 34mA @ 1fix per second
oUART interface at CMOS level
oV_BAK at 3.0V / 60uA (typ.)
•Internal Power-On-Reset (POR) reset chipset to prevent memory corruption
if main power removal abruptly
•Internal 4 Mb SPI Flash
•Small form factor of 17.78 x 16.51 mm² (0.7” x 0.65”)
•Supported temperature range: -40°C to +85°C
•Single-sided SMT component, for reflow soldering
•RoHS compliant, lead-free
•Tape & reel packaging
•Excellent antenna support
oOn-module patch antenna
oAntenna input for direct connection of external active antenna
oRF switch to select between antennas
The antenna receiver module is available as an off-the-shelf component, 100%
tested and shipped in tape-and-reel packaging.
1.3 RoHS and Lead-Free Information
Lantronix’s products marked with the lead-free symbol either on the module or the
packaging comply with the "Directive 2002/95/EC of the European Parliament and
the Council on the Restriction of Use of certain Hazardous Substances in Electrical
and Electronic Equipment" (RoHS).
All Lantronix GNSS receiver modules, GNSS antenna receiver module and telemat-
ics units are RoHS compliant.

1: Introduction
GNSS Receiver Module A5135-H User Guide 10
1.4 Label
The A5135-H label (size: 12.0x 4.0 mm²) contains the following information:
Figure 1: A5135-H label
The label is placed on the side of the GNSS antenna. The data matrix code holds the
product type, part number, software release, hardware release, factory code, year &
week of assembly and a 6-digit serial number. Due to limited space on module label,
only product type, year & week of assembly and 6-digit serial number will be printed
on it.
Representing
Factory
loca-
tion
Product
Number
Part
Number
Software
Release
Hardware
Release
Assembly
Year/Week
Serial
Number
Number of
digits
(16)
XX
XXXXXXX
XXXX
XX
XX
XXXX
XXXXXX
2
6
4
2
2
4
6
Example
TF
A5135H
9333
01
01
1211
000005
Meaning
TF
Given
Given
Given
Given
Year=12
Week=11
Increment
from
000001 up
to 999999
Example of MID#: TFA5135H933301011211000005