Telit Wireless Solutions LE915A P Series User manual

[01.2017]
Mod. 0805 2017-01 Rev.6
LE915Ax-P
HW User Guide
1VV0301680 Rev.0 –2020-09-16

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SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
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arises by operation of law in the sale of a product.

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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.
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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.
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V. Third Party Rights
The software may include Third Party Right software. In this case you agree to comply with
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License shall apply to the Third-Party Right software.
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ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

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APPLICABILITY TABLE
PRODUCTS
LE915A6-P
LE915A4-P

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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

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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

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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]
•[e-mail]
•[e-mail]
•[e-mail]
For detailed information about where you can buy the Telit modules or for recommendations
on accessories and components visit:
http://www.telit.com

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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

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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
42
3500
3400 - 3600
TDD
43
3700
3600 - 3800
TDD
48
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