Telit Wireless Solutions SL871 Specification sheet

SL871 Family
Product User Guide
1VV0301170 Rev. 6
2018-03-13

SL871 Family Product User Guide NOTICES
1VV0301170 Rev. 6 Page 2 of 85 2018-03-13
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
NOTICES
While reasonable efforts have been made to ensure the accuracy of this document, Telit
assumes no liability resulting from any inaccuracies or omissions in this document, or from use
of the information obtained herein. The information in this document has been carefully checked
and is believed to be reliable, however no responsibility is assumed for inaccuracies or
omissions. Telit reserves the right to make changes to any products described herein and
reserves the right to revise this document and to make changes from time to time in content
hereof with no obligation to notify any person of revisions or changes. Telit does not assume
any liability arising out of the application or use of any product, software, or circuit described
herein; neither does it convey license under its patent rights or the rights of others.
It is possible that this publication may contain references to, or information about Telit products
(machines and programs), programming, or services that are not announced in your country.
Such references or information must not be construed to mean that Telit intends to announce
such Telit products, programming, or services in your country.
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This manual and the Telit products described herein may be, include or describe copyrighted
Telit material, such as computer programs stored in semiconductor memories or other media.
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copied, reproduced, distributed, merged or modified in any manner without the express written
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either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents
or patent applications of Telit, as arises by operation of law in the sale of a product.
COMPUTER SOFTWARE COPYRIGHTS
The Telit and Third Party supplied Software (SW) products described in this manual may
include copyrighted Telit and other Third Party supplied computer programs stored in
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other Third Party supplied SW certain exclusive rights for copyrighted computer programs,
including the exclusive right to copy or reproduce in any form the copyrighted computer
program. Accordingly, any copyrighted Telit or other Third Party supplied SW computer
programs contained in the Telit products described in this manual may not be copied (reverse
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grant either directly or by implication, estoppel, or otherwise, any license under the copyrights,
patents or patent applications of Telit or other Third Party supplied SW, except for the normal
non-exclusive, royalty-free license to use that arises by operation of law in the sale of a product.

SL871 Family Product User Guide NOTICES
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USAGE AND DISCLOSURE RESTRICTIONS
I. License Agreements
The software described in this document is the property of Telit and its licensors. It is furnished
by express license agreement only and may be used only in accordance with the terms of such
an agreement.
II. Copyrighted Materials
Software and documentation are copyrighted materials. Making unauthorized copies is
prohibited by law. No part of the software or documentation may be reproduced, transmitted,
transcribed, stored in a retrieval system, or translated into any language or computer language,
in any form or by any means, without prior written permission of Telit
III. High Risk Materials
Components, units, or third-party products used in the product described herein are NOT fault-
tolerant and are NOT designed, manufactured, or intended for use as on-line control equipment
in the following hazardous environments requiring fail-safe controls: the operation of Nuclear
Facilities, Aircraft Navigation or Aircraft Communication Systems, Air Traffic Control, Life
Support, or Weapons Systems (High Risk Activities"). Telit and its supplier(s) specifically
disclaim any expressed or implied warranty of fitness for such High Risk Activities.
IV. Trademarks
TELIT and the Stylized T Logo are registered in the Trademark Office. All other product or
service names are the property of their respective owners.
V. Third Party Rights
The software may include Third Party Right software. In this case you agree to comply with all
terms and conditions imposed on you in respect of such separate software. In addition to Third
Party Terms, the disclaimer of warranty and limitation of liability provisions in this License shall
apply to the Third Party Right software.
TELIT HEREBY DISCLAIMS ANY AND ALL WARRANTIES EXPRESS OR IMPLIED FROM
ANY THIRD PARTIES REGARDING ANY SEPARATE FILES, ANY THIRD PARTY
MATERIALS INCLUDED IN THE SOFTWARE, ANY THIRD PARTY MATERIALS FROM
WHICH THE SOFTWARE IS DERIVED (COLLECTIVELY “OTHER CODE”), AND THE USE OF
ANY OR ALL THE OTHER CODE IN CONNECTION WITH THE SOFTWARE, INCLUDING
(WITHOUT LIMITATION) ANY WARRANTIES OF SATISFACTORY QUALITY OR FITNESS
FOR A PARTICULAR PURPOSE.
NO THIRD PARTY LICENSORS OF OTHER CODE SHALL HAVE ANY LIABILITY FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
WHETHER MADE UNDER CONTRACT, TORT OR OTHER LEGAL THEORY, ARISING IN
ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE OTHER CODE OR THE
EXERCISE OF ANY RIGHTS GRANTED UNDER EITHER OR BOTH THIS LICENSE AND
THE LEGAL TERMS APPLICABLE TO ANY SEPARATE FILES, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.

SL871 Family Product User Guide NOTICES
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PRODUCT APPLICABILITY TABLE
PRODUCT
SL871
SL871L
SL871-S
SL871L-S
Table 0-1 Product Applicability Table

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CONTENTS
NOTICES....................................................................................................................................2
COPYRIGHTS ............................................................................................................................2
COMPUTER SOFTWARE COPYRIGHTS..................................................................................2
USAGE AND DISCLOSURE RESTRICTIONS ...........................................................................3
PRODUCT APPLICABILITY TABLE..........................................................................................4
CONTENTS ................................................................................................................................5
TABLES .....................................................................................................................................9
FIGURES..................................................................................................................................10
1INTRODUCTION...........................................................................................................11
Purpose ....................................................................................................................11
Contact and Support Information...............................................................................11
Text Conventions ......................................................................................................11
Related Publications and Downloads ........................................................................12
Related Documents and downloads........................................................................12
Related Documents Requiring a Non-Disclosure Agreement ..................................12
2PRODUCT DESCRIPTION ...........................................................................................13
Product Overview......................................................................................................13
Product Naming ........................................................................................................14
Product Variants .......................................................................................................14
SL871-S and SL871L-S Features ...........................................................................14
SL871 Product Features Table ...............................................................................15
Block Diagrams.........................................................................................................16
SL871 (Gen 2) Block Diagram ................................................................................16
SL871L Block Diagram ...........................................................................................17
SL871-S Block Diagram..........................................................................................18
SL871L-S Block Diagram........................................................................................19
Module Photo............................................................................................................20
3EVALUATION KIT ........................................................................................................21
Evaluation Unit..........................................................................................................22
4PRODUCT FEATURES ................................................................................................23
Multi-Constellation Navigation (SL871 and SL871L only) .........................................23
Quasi-Zenith Satellite System (QZSS) ......................................................................23
Satellite-Based Augmentation System (SBAS)..........................................................23
SBAS Corrections...................................................................................................23

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SBAS Ranging........................................................................................................23
Differential GPS (DGPS) (SL871 and SL871L only) .................................................23
Assisted GPS (AGPS)...............................................................................................24
Locally-generated AGPS - Embedded Assist System (EASY) ................................24
Server-generated AGPS - Extended Prediction Orbit (EPO) ...................................24
Host EPO................................................................................................................24
10 Hz Navigation.......................................................................................................24
Elevation Mask Angle................................................................................................24
Static Navigation .......................................................................................................25
Jamming Rejection – Active Interference Cancellation (AIC).....................................25
Internal LNA (SL871L and SL871L-S only)..............................................................26
1PPS.........................................................................................................................26
Power Management Modes ......................................................................................27
Full Power Continuous Mode ..................................................................................27
Backup Mode (Perpetual) (SL871 and SL871L only) .............................................28
Standby Modes.......................................................................................................28
GLP Mode (SL871 and SL871L modules only) ......................................................28
Periodic Modes (SL871 and LS871L only) .............................................................29
AlwaysLocate™ Modes ..........................................................................................30
5DATA RETENTION.......................................................................................................31
6PRODUCT PERFORMANCE........................................................................................32
Performance - SL871 and SL871L ............................................................................32
Horizontal Position Accuracy - SL871 and SL871L .................................................32
Time to First Fix - SL871 and SL871L.....................................................................33
Sensitivity - SL871 (Gen 2) and SL871L .................................................................34
Performance - SL871-S and SL871L-S .....................................................................35
Position Accuracy - SL871-S and SL871L-S...........................................................35
Time to First Fix - SL871-S and SL871L-S..............................................................35
Sensitivity - SL871-S and SL871L-S .......................................................................35
Jamming Mitigation Performance example................................................................36
7SOFTWARE INTERFACE.............................................................................................37
NMEA Output Messages...........................................................................................37
Standard Messages................................................................................................37
Proprietary Output Messages .................................................................................38
NMEA Input Commands............................................................................................39
NMEA Commands List............................................................................................39
8FLASH UPGRADABILITY ............................................................................................40
9ELECTRICAL INTERFACE ..........................................................................................41
Pinout diagrams and tables.......................................................................................41
SL871 (Gen 2) and SL871L Pin-out diagram and table...........................................41
SL871-S and SL871L-S Pin-out diagram and table.................................................43

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DC Power Supply......................................................................................................45
VCC........................................................................................................................45
VBATT ....................................................................................................................45
VCC_RF .................................................................................................................45
DC Power Requirements ........................................................................................46
DC Power Consumption - SL871 (Gen 2) ...............................................................46
DC Power Consumption – SL871L .........................................................................47
DC Power Consumption - SL871-S.........................................................................48
DC Power Consumption - SL871L-S.......................................................................48
Digital Interface Signals ............................................................................................49
I/O Signal Levels.....................................................................................................49
Antenna Related Signals ........................................................................................51
Control (Input) Signals ............................................................................................52
Output (Status) Signals...........................................................................................52
Serial I/O Ports..........................................................................................................53
Serial Port Usage....................................................................................................53
UART Port Operation..............................................................................................53
I2C Port Operation (SL871 and SL871L only).........................................................54
Antenna RF Interface ................................................................................................55
RF-IN......................................................................................................................55
Frequency Plan.......................................................................................................55
Burnout Protection ..................................................................................................55
Jamming Rejection – Active Interference Cancellation............................................55
10 RF FRONT-END DESIGN .............................................................................................56
RF Signal Requirements ...........................................................................................56
GNSS Antenna Polarization ......................................................................................57
Active versus Passive Antenna .................................................................................57
GNSS Antenna Gain .................................................................................................58
System Noise Floor...................................................................................................58
RF Trace Losses.......................................................................................................59
PCB Stack and Trace Impedance .............................................................................59
Input to the Pre-select SAW Filter (SL8721 Gen 2 and SL871-S only) ......................60
Input to the LNA (SL871L AND SL871L-S only) ........................................................60
Powering an External LNA (or active antenna)..........................................................60
RF Interference .........................................................................................................61
Shielding ...................................................................................................................61
11 REFERENCE DESIGN..................................................................................................62
12 MECHANICAL DRAWING ............................................................................................63
13 PCB FOOTPRINT .........................................................................................................64
14 PACKAGING & HANDLING .........................................................................................65
Product Marking and Serialization.............................................................................65

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Product Packaging....................................................................................................66
Moisture Sensitivity ...................................................................................................68
ESD Sensitivity .........................................................................................................70
Assembly Considerations..........................................................................................70
Washing Considerations ...........................................................................................70
Reflow.......................................................................................................................71
Disposal ....................................................................................................................72
Safety........................................................................................................................72
15 ENVIRONMENTAL REQUIREMENTS..........................................................................73
Operating Environmental Limits ................................................................................73
Storage Environmental Limits ...................................................................................73
16 COMPLIANCES............................................................................................................74
RoHS compliance .....................................................................................................74
EU (RED) Declarations of Conformity .......................................................................75
EU (RED) Declaration of Conformity – SL871.........................................................75
EU (RED) Declaration of Conformity – SL871L.......................................................76
EU RED Declaration of Conformity – SL871-S........................................................77
EU RED Declaration of Conformity – SL871L-S......................................................78
17 SAFETY RECOMMENDATIONS ..................................................................................79
18 GLOSSARY AND ACRONYMS....................................................................................80
19 DOCUMENT HISTORY.................................................................................................83

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TABLES
Table 0-1 Product Applicability Table ........................................................................................ 4
Table 2-1 SL871 Family Product Features................................................................................15
Table 2-2 ROM Features (-S modules only).............................................................................15
Table 4-1 Power Management - Command summary ...............................................................27
Table 5-1 Data Retention ..........................................................................................................31
Table 6-1 SL871 and SL871L Horizontal Position Accuracy......................................................32
Table 6-2 SL871 and SL871L Time to First Fix .........................................................................33
Table 6-3 SL871 (Gen 2) and SL871L Receiver Sensitivity.......................................................34
Table 6-4 SL871-S and SL871L-S Position Accuracy ...............................................................35
Table 6-5 SL871-S and SL871L-S Time to First Fix ..................................................................35
Table 6-6 SL871-S and SL871L-S Sensitivity ...........................................................................35
Table 7-1 Default NMEA output messages ...............................................................................37
Table 7-2 Available Messages ..................................................................................................37
Table 7-3 NMEA Talker IDs ......................................................................................................38
Table 7-4 Proprietary Output Messages....................................................................................38
Table 7-5 NMEA Input Commands............................................................................................39
Table 9-1 SL871 (Gen 2) & SL871L Pin-out Table ....................................................................42
Table 9-2 SL871-S & SL871L-S Pin-out Table..........................................................................44
Table 9-3 DC Supply Voltage....................................................................................................46
Table 9-4 SL871 (Gen 2) Power Consumption..........................................................................46
Table 9-5 SL871L Power Consumption.....................................................................................47
Table 9-6 SL871-S Power Consumption ...................................................................................48
Table 9-7 SL871L-S Power Consumption .................................................................................48
Table 9-8 Input Logic Levels: RX and Reset-N, & Ant Sense....................................................49
Table 9-9 Input Logic Levels: Force-On ....................................................................................49
Table 9-10 Output Logic Levels: TX and 1PPS .........................................................................50
Table 9-11 Output Logic Levels: ANT_ON ................................................................................50
Table 9-12 Frequency Plan.......................................................................................................55
Table 10-1 Inductor Loss ..........................................................................................................61
Table 14-1 Product Label Description .......................................................................................65
Table 15-1 Operating Environmental Limits ..............................................................................73
Table 15-2 Storage Environmental Limits..................................................................................73

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FIGURES
Figure 2-1 SL871 (Gen 2) Block Diagram .................................................................................16
Figure 2-2 SL871L Block Diagram ............................................................................................17
Figure 2-3 SL871-S - Block Diagram.........................................................................................18
Figure 2-4 SL871L-S - Block Diagram.......................................................................................19
Figure 2-5 SL871 Family Module – Photo ................................................................................20
Figure 3-1 Evaluation Kit contents............................................................................................21
Figure 3-2 SL871 Evaluation Unit.............................................................................................22
Figure 4-1Jamming Rejection ...................................................................................................25
Figure 4-2 GNSS Low Power (GLP) mode diagram ..................................................................28
Figure 4-3 Periodic Modes diagram ..........................................................................................29
Figure 4-4 Periodic Mode example 1.........................................................................................29
Figure 4-5 Periodic Mode example 2.........................................................................................29
Figure 6-1 Jamming with AIC Disabled .....................................................................................36
Figure 6-2 Jamming with AIC Enabled ......................................................................................36
Figure 9-1 SL871 (Gen 2) and SL871L Pin-out diagram ...........................................................41
Figure 9-2 SL871-S and SL871L-S Pin-out diagram .................................................................43
Figure 10-1 RF Trace Examples ...............................................................................................59
Figure 11-1 SL871 Family Reference Design............................................................................62
Figure 12-1 SL871 Family Mechanical Drawing .......................................................................63
Figure 13-1 SL871 Family PCB Footprint.................................................................................64
Figure 14-1 Product Label........................................................................................................65
Figure 14-2 Tape and Reel Packaging......................................................................................66
Figure 14-3 Tape and Reel Detail .............................................................................................67
Figure 14-4 Moisture Sensitive Devices Label...........................................................................69
Figure 14-5 Recommended Reflow Profile...............................................................................71
Figure 16-1 EU RED Declaration of Conformity - SL871 ...........................................................75
Figure 16-2 EU RED Declaration of Conformity - SL871L .........................................................76
Figure 16-3 EU RED Declaration of Conformity - SL871-S .......................................................77
Figure 16-4 EU RED Declaration of Conformity - SL871L-S......................................................78
EQUATIONS
Equation 10-1 Carrier to Noise Ratio.........................................................................................58