Telit Wireless Solutions LE915A P Series Manuale utente

[01.2017]

Mod. 0805 2017-01 Rev.6

LE915Ax-P

HW User Guide

1VV0301680 Rev.0 –2020-09-16

LE915Ax-P HW User Guide

1VV0301680 Rev. 0 Page 2of 38 2020-09-16

SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE

NOTICE

While reasonable efforts have been made to assure 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 obligationto 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.

COPYRIGHTS

This instruction manual and the Telit products described in this instruction manual may be,

include or describe copyrighted Telit material, such as computer programs stored in

semiconductor memories or other media. Laws in the Italy and other countries preserve for

Telit and its licensors certain exclusive rights for copyrighted material, including the

exclusive right to copy, reproduce in any form, distribute and make derivative works of the

copyrighted material. Accordingly, any copyrighted material of Telit and its licensors

contained herein or in the Telit products described in this instruction manual may not be

copied, reproduced, distributed, merged or modified in any manner without the express

written permission of Telit. Furthermore, the purchase of Telit products shall not be deemed

to grant 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 3rd Party supplied Software (SW) products described in this instruction

manual may include copyrighted Telit and other 3rd Party supplied computer programs

stored in semiconductor memories or other media. Laws in the Italy and other countries

preserve for Telit and other 3rd 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 3rd Party

supplied SW computer programs contained in the Telit products described in this instruction

manual may not be copied (reverse engineered) or reproduced in any manner without the

express written permission of Telit or the 3rd Party SW supplier. Furthermore, the purchase

of Telit products shall not be deemed to grant either directly or by implication, estoppel, or

otherwise, any license under the copyrights, patents or patent applications of Telit or other

3rd 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.

LE915Ax-P HW User Guide

1VV0301680 Rev. 0 Page 3of 38 2020-09-16

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 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.

LE915Ax-P HW User Guide

1VV0301680 Rev. 0 Page 4of 38 2020-09-16

APPLICABILITY TABLE

PRODUCTS

LE915A6-P

LE915A4-P

LE915Ax-P HW User Guide 
1VV0301680 Rev. 0 Page 5of 38 2020-09-16 
 
CONTENTS 
1. INTRODUCTION............................................................................................7 
 Scope.............................................................................................................7 
 Audience.........................................................................................................7 
 Contact Information, Support..........................................................................7 
 Text Conventions............................................................................................8 
 Related Documents........................................................................................8 
2. GENERAL PRODUCT DESCRIPTION ..........................................................9 
 Main features..................................................................................................9 
 Cellular Frequency bands and CA combinations.............................................9 
2.2.1. Frequency bands.............................................................................................9
2.2.2. Carrier Aggregation (LE915A6-P only)...........................................................10 
 Target market...............................................................................................10 
 Block Diagram ..............................................................................................10 
 Pin Assignment.............................................................................................11 
3. POWER SUPPLY.........................................................................................13 
 Power Supply Requirement ..........................................................................13 
 Power Consumption .....................................................................................13 
 1.8V power output.........................................................................................13 
 General Design Rules...................................................................................14 
3.4.1. Electrical Design Guidelines ..........................................................................14 
3.4.1.1. + 5V Input Source Power Supply –Design Guidelines...................................14 
3.4.2. Thermal Design Guidelines............................................................................14 
3.4.3. Power Supply PCB layout Guidelines............................................................14 
3.4.4. PCB pad design.............................................................................................15 
4. INTERFACE DETAILS.................................................................................16 
 Power and Ground........................................................................................16 
 Power On/Off and reset control.....................................................................16 
4.2.1. Power on sequence.......................................................................................16 
4.2.2. Power off sequence.......................................................................................17 
 USB 2.0 interface..........................................................................................17 
 UART interface.............................................................................................18 
 LED Indication..............................................................................................21 
 SIM interface ................................................................................................22 
 Reserved pads .............................................................................................23 
5. ANTENNA INTERFACE AND RADIO PERFORMANCE .............................24 

LE915Ax-P HW User Guide 
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 Antenna ports...............................................................................................24 
 Antenna specification recommended............................................................24 
 Transmission line design guidelines..............................................................24 
 Antenna installation guidelines......................................................................25 
 RF performance............................................................................................26 
5.5.1. RF power output............................................................................................26 
5.5.2. RX Sensitivity ................................................................................................26 
6. ENVIRONMENT REQUIREMENT................................................................27 
 Temperature range.......................................................................................27 
7. MECHANICAL SPECIFICATIONS...............................................................28 
 Weight..........................................................................................................28 
 Dimension and pad numbering.....................................................................28 
8. REFLOW INFORMATION............................................................................29 
9. PACKAGING................................................................................................30 
10. REGULATORY APPROVAL........................................................................32 
11. SAFETY RECOMMENDATIONS..................................................................35 
 READ CAREFULLY......................................................................................35 
12. ACRONYMS.................................................................................................36 
13. DOCUMENT HISTORY................................................................................37 
 
 

LE915Ax-P HW User Guide

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1. INTRODUCTION

Scope

This document introduces the Telit LE915Ax-P family and presents possible and

recommended hardware solutions for developing a product based on the LE915Ax-P

modules.

In this document all the basic functions of the module will be considered; for each one of

them a proper hardware solution will be suggested and eventually the wrong solutions and

common errors to be avoided will be evidenced. Obviously, this document cannot embrace

the whole hardware solutions and products that may be designed. The wrong solutions to

be avoided shall be considered as mandatory, while the suggested hardware configurations

shall not be considered mandatory, instead the information given shall be used as a guide

and a starting point for properly developing your product with the Telit LE915Ax-P modules.

Information –Integration of the single mode LTE/CBRS LE915Ax-P

cellular modules within a user application must be performed

according to the design rules described in this manual.

The information presented in this document is believed to be accurate and reliable.

However, no responsibility is assumed by Telit Communications S.p.A. for its use, nor any

infringement of patents or other rights of third parties which may result from its use. No

license is granted by implication or otherwise under any patent rights of Telit

Communications S.p.A. other than for circuitry embodied in Telit products. This document

is subject to change without notice.

Audience

This document is intended for Telit customers, especially system integrators, about to

implement their applications using the Telit LE915Ax-P family.

Contact Information, Support

For general contact, technical support services, technical questions and report

documentation errors contact Telit Technical Support at:

•TS[email protected]

•TS-AMERICAS@telit.com

•TS-APAC@telit.com

•TS-SRD@telit.com

For detailed information about where you can buy the Telit modules or for recommendations

on accessories and components visit:

http://www.telit.com

LE915Ax-P HW User Guide

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Our aim is to make this guide as helpful as possible. Keep us informed of your comments

and suggestions for improvements.

Telit appreciates feedback from the users of our information.

Text Conventions

Danger –This information MUST be followed, or catastrophic

equipment failure or bodily injury may occur.

Caution or Warning –Alerts the user to important points about

integrating the module, ifthese points are not followed, the module and

end user equipment may fail or malfunction.

Tip or Information –Provides advice and suggestions that may be

useful when integrating the module.

All dates are in ISO 8601 format, i.e. YYYY-MM-DD.

Related Documents

•LE915Ax-P family AT command reference guide, 80671STxxxxxA

LE915Ax-P HW User Guide

1VV0301680 Rev. 0 Page 9of 38 2020-09-16

2. GENERAL PRODUCT DESCRIPTION

The LE915Ax-P family consists of an LTE CAT-6 and CAT-4 modules and is specifically

designed to enable cellular data connectivity on CBRS networks operating on TDD LTE

band 48 in US. It can also operate on other networks operating on LTE bands 42 and 43.

This document provides technical information about LE915Ax-P LCC modules.

Main features

Main features of the LE915Ax-P are listed below.

Table 2.1-1 LE915Ax-P Feature Summary

Feature

Description

Physical

LCC (32 x 29 x2.4mm),

134 pads carrying useful signals

Power supply

Nominal 3.8V single power supply

Operating voltage

recommended

-30 ~ +60 °C ambient

Serial interface

USB 2.0,

1 UART with HW flow control and 2 UART w/o flow control

Cellular technology

LE915A6-P: LTE CAT.6, TDD, 200Mbps on DL, 3GPP release 10

LE915A4-P: LTE CAT.4, TDD, 100Mbps on DL, 3GPP release 9

Diversity/2nd Rx

4G: all operating on all supported frequency bands

SIM interface

Single interface for 1.8V and 3.0V

Antenna ports

1 main and 1 auxiliary antenna ports

Cellular Frequency bands and CA combinations

2.2.1. Frequency bands

Following the list of operating frequencies on LTE mode.

Table 2.2.1-1 LTE Bands supportive

E-UTRA

BAND

Frequency

(MHz)

Uplink

Frequency

UE Receive

(MHz)

Downlink

Frequency

UE Receive

(MHz)

Duplex

Mode

3500

3400 - 3600

TDD

3700

3600 - 3800

TDD

3500

3550 –3700

TDD

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2.2.2. Carrier Aggregation (LE915A6-P only)

The following tables list the 2CC configurations available on LE915A6-P.

Table 2.2.2-1 Two Carrier Component Carrier Aggregation Configurations

Applicable model

2CC DL CA Combinations

LE915A6-P

CA_42A-42A; CA_43A-43A; CA_48A-48A; CA_42A-43A;

CA_42C; CA_43C; CA_48C

Target market

The LE915Ax-P family is specifically designed to enable cellular data connectivity on CBRS

networks operating on LTE band 48 in US. It can also operate on other networks operating

on LTE band 42 and 43.

It meets also the requirements for M2M application such as metering, tracking system,

security solutions, routers, wireless POS, among others.

Block Diagram

Figure 2.4-1 LE915A6-P block daigram

Figure 2.4-2 LE915A4-P block diagram

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