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xE70-915 RF Module User Guide

1VV0301106

rev.3 – 2015-03-04

Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
Reserved.

Page 14 of 34

3.7.

Radio Specifications

Measured on DIP interface at T = 25°C, Vdd = 3.6V, 50

Ω

impedance and default power

Frequency Band

902 MHz - 928 MHz

RF data rate

9.6 kbps

19.2 kbps

38.4 kbps

57.6 kbps

Number of channels

Channel spacing

250 kHz

First Channel

915.375 MHz

Transmission

Duty cycle

≤

10%

Modulation Format

2GFSK

Technology

Frequency Hopping

Table of channels

Dwell time

350 ms

Deviation

± 7 kHz

± 10 kHz

± 20 kHz

± 30 kHz

Frequency tolerance
at 25°C

± 2.5 kHz

RF Output Power

at 3.6V

+27dBm ± 1dB

Reception

Rx filter BW

27 kHz

44 kHz

81 kHz

122 kHz

Sensitivity

for PER < 0.8 (1)

-114 dBm

-113 dBm

-110.5 dBm

-108.5 dBm

(1) 20 bytes Data Packet not including preamble length

Содержание xE70-915

Страница 1: ...xE70 915 RF Module User Guide 1VV0301106 rev 3 2015 03 04...

Страница 2: ...15 RF Module User Guide 1VV0301106 rev 3 2015 03 04 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 2 of 34 APPLICABILITY TABLE PRODUCT LE...

Страница 3: ...ve 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 mat...

Страница 4: ...translated into any language or computer language in any form or by any means without prior written permission of Telit High Risk Materials Components units or third party products used in the produc...

Страница 5: ...2 1 1 915 MHz band Requirements 9 2 2 Other Regulatory Requirements 9 3 General Features 10 3 1 Main Functionalities 10 3 2 Software 10 3 3 Temperature Requirements 10 3 4 Mechanical Specifications 11...

Страница 6: ...Soldering pad pattern 23 5 4 Solder paste 24 5 5 Placement 24 5 6 Soldering Profile RoHS Process 24 6 Board Mounting Recommendation 26 6 1 Electrical environment 26 6 2 Power supply decoupling on xE70...

Страница 7: ...ty L LE70 915 FH Star Network xE70 915 is pin to pin compatible with LE NE and ME modules working at different frequencies in particular xE50 868 and xE70 868 xE70 915 is also pin to pin compatible wi...

Страница 8: ...the users of our information 1 5 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...

Страница 9: ...cy hopping RF devices and gives the following requirements Frequency Band Channel spacing Maximum radiated power Hopping cycle 902 928 MHz 25 20dB BW 250kHz 1W 0 4s each 20s 0 4s each 20s 50 hop Freq...

Страница 10: ...rectional link The digital part has the following functionalities Communication interface I O management Micro controller with embedded Telit Software Stack The RF part has the following functionaliti...

Страница 11: ...4 3 4 Mechanical Specifications Size Rectangular 25 8 x 15 mm Height 3 mm Weight 1 7 g PCB thickness 0 8 mm Cover Mounted above SMD components for EMI reduction and automatic placement Dimensions 25 x...

Страница 12: ...E70 915 RF Module User Guide 1VV0301106 rev 3 2015 03 04 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 12 of 34 3 5 Mechanical dimension...

Страница 13: ...under 50 impedance connected to RF port and default power register setting if nothing else stated Max limits apply over the entire operating range T 40 C to 85 C Vdd 2 3V to 3 6V and all channels Cha...

Страница 14: ...902 MHz 928 MHz RF data rate 9 6 kbps 19 2 kbps 38 4 kbps 57 6 kbps Number of channels 50 Channel spacing 250 kHz First Channel 915 375 MHz Transmission Duty cycle 10 Modulation Format 2GFSK Technolo...

Страница 15: ...e flashed o Customization capability o Embedded bootloader for firmware download through serial link or over the air 3 9 Absolute Maximum Ratings Voltage applied to Vcc VDD 0 3V to 3 6V Voltage applie...

Страница 16: ...ev 3 2015 03 04 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 16 of 34 Equipment and Part Number SMD Version B LE70 915 SMD DIP Version...

Страница 17: ...ions S p A All Rights Reserved Page 17 of 34 4 Pin out and Signals Description 4 1 Module Pin out Top View CAUTION reserved pins must not be connected CAUTION In case you want to use in the same appli...

Страница 18: ...GND Gnd Ground J16 PROG I TTL Signal for serial C flashing Active high with internal pull down J15 GND Gnd Ground J14 PDI_DATA I O TTL Program and Debug Interface DATA J13 GND Gnd Ground J12 GND Gnd G...

Страница 19: ...ll Rights Reserved Page 19 of 34 J2 IO2_P I O TTL Logic I O N 2 with interrupt RX LED O TTL See reference document 2 Frequency Hopping Star Network Protocol Stack User Guide J1 IO1_P I O TTL Logic I O...

Страница 20: ...ND 3 P1 J5 IO5_A 4 P2 J9 Status TX RX Reserved Pin 5 P3 J2 RX LED 6 P4 J1 TX LED 7 P5 J4 IO4_A 8 P6 J3 IO3_A 9 GND GND 10 VDD J25 VDD J2 11 PROG J16 PROG 12 RTS J22 RTS 13 CTS J24 CTS 14 RESET J23 RES...

Страница 21: ...utput See reference document 2 for LE70 915 STANDBY Input signal which indicates to the module to switch to pre selected low power mode See reference document 2 for LE70 915 TX LED Output signal set t...

Страница 22: ...All Rights Reserved Page 22 of 34 5 Process Information 5 1 Delivery xE70 915 modules are delivered in plastic tray packaging each tray including 50 units The dimensions of the tray are the following...

Страница 23: ...ior to the reflow soldering process in order to prevent a popcorn effect After being submitted to the drying bake modules must be soldered on host boards within 168 hours Also it must be noted that du...

Страница 24: ...c and made of 95 5 of SN 4 of Ag and 0 5 of Cu The recommended solder paste height is 180 m 5 5 Placement The xE70 915 module can be automatically placed on host boards by pick and place machines like...

Страница 25: ...served Page 25 of 34 The barcode label located on the module shield is able to withstand the reflow temperature CAUTION It must also be noted that if the host board is submitted to a wave soldering af...

Страница 26: ...ongly decrease module performances Therefore it is recommended to put a metallic shield covering DC conversion function Switching components circuits especially RS 232 TTL interface circuit power supp...

Страница 27: ...achieve a good RF layout It is recommended to fill all unused PCB area around the module with ground plane The radio module ground pin must be connected to solid ground plane If the ground plane is o...

Страница 28: ...the antenna or connector must be 50 ohms following the tables below Ground lines should be connected to the ground plane with as many vias as possible but not too close to the signal line PCB materia...

Страница 29: ...3 2015 03 04 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 29 of 34 6 5 xE70 868 915 Interfacing Example of a full RS 232 connection bet...

Страница 30: ...e 1VV0301106 rev 3 2015 03 04 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 30 of 34 Example of minimum connections for communication be...

Страница 31: ...Module User Guide 1VV0301106 rev 3 2015 03 04 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 31 of 34 Example for sensor connection with...

Страница 32: ...to the following two conditions 1 this device may not cause interference and 2 this device must accept any interference including interference that may cause undesired operation of the device Le pr se...

Страница 33: ...If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference...

Страница 34: ...l Rights Reserved Page 47 of 50 module d mission du mot Contient ou d une formulation similaire exprimant le m me sens comme suit Contains FCC ID RI7LE70FH Contains IC 5131A LE70FH 7 6 CAN ICES 3 B NM...

Страница 35: ...to the security and fire prevention regulations The product has to be handled with care avoiding any contact with the pins because electrostatic discharges may damage the product itself The system int...

Страница 36: ...ETSI European Telecommunication Standard Institute FCC FH GFSK Federal Communications Commission Frequency Hopping Gaussian Frequency Shift Keying I Input ISM Industrial Scientific and Medical kB Kilo...

Страница 37: ...ges 0 2013 10 11 First Release 1 2014 04 02 Updated LE70 915 Demo Kit content 2 2014 07 21 Corrected partname for L1 on page 26 updated sensitivity and current consumption values 3 2015 03 04 Updated...

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