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Telit Wireless Solutions ME910G1, Руководство по конструкции

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ME910G1 Hardware Design Guide 
 

 

 
1VV0301593 Rev.12

 

Page 24 of 93 

2021-09-24

 

 

Not  Subject to NDA 

4.

 

POWER SUPPLY 

The power supply circuit and board layout are an important part of the product design. 
Make sure to follow the guidelines and requirements for optimal performance . 

 

Power Supply Requirements 

The external power supply must be connected to VBATT and VBATT_PA pads and must 
fulfil the following requirements: 

Power Supply 

Value 

Nominal Supply Voltage 

3.8V 

Operating Voltage Range 

3.2 V - 4.2 V 

Extended Voltange Range 

2.6 V - 4.5 V 

VBATT

min 

2.7V 

Table 11: Power Supply Requirements 

 

Warning: The range 2.6V - 3.2V can be used only if both USB and 2G 
are disabled. 

 

 

Warning:

 

The modem supply voltage must never exceed the 

Extended Operating Voltage Range.  

Inaccurate implementation of power supply guidelines described in 
this document can cause a faulty module.

 

 

 

Note:  For  PTCRB  approval  on  the  final  products  the  power  supply 
must 

be within the “Operating Voltage Range”

. 

 

 

Note: The  power supply section of the application must be carefully 
designed to avoid excessive voltage drop during peak transmission 
current  absorptions.  If  the  voltage  drops  beyond  the  limits  of  the 
Extended Operating Voltage range, an unintentional module power 
off can occur. 

Содержание ME910G1

Страница 1: ...ME910G1 HW Design Guide 1VV0301593 Rev 12 2021 09 24 Telit Technical Documentation...

Страница 2: ...ME910G1 Hardware Design Guide 1VV0301593 Rev 12 Page 2 of 93 2021 09 24 Not Subject to NDA APPLICABILITY TABLE PRODUCTS ME910G1 W1 ME910G1 WW ME910G1 WWV...

Страница 3: ...Documents 9 2 GENERAL PRODUCT DESCRIPTION 10 Overview 10 Product Variants and Frequency Bands 10 Target Market 11 Main Features 11 TX Output Power 12 ME910G1 W1 12 ME910G1 WW 12 ME910G1 WWV 13 RX Sens...

Страница 4: ...29 Battery Source Power Supply Design Guidelines 29 Thermal Design Guidelines 30 Power Supply PCB Layout Guidelines 30 VAUX Power Output 32 RTC Supply 32 5 DIGITAL SECTION 33 Logic Levels 33 Power On...

Страница 5: ...Transmission Line Measurements 56 Antenna Installation Guidelines 58 7 AUDIO SECTION 59 Electrical Characteristics 59 8 GNSS SECTION 60 GNSS Signals Pin out 60 RF Front End Design 60 Guidelines of PC...

Страница 6: ...Conformity 77 RED Antennas 77 FCC and ISED Approval FCC et ISDE Approbation 78 FCC Certificates 78 ISED Certificate ISDE Certificates 78 Applicable FCC and ISED Rules Liste des R gles FCC et ISDE App...

Страница 7: ...gulatory Notices 85 13 PRODUCT AND SAFETY INFORMATION 86 Copyrights and Other Notices 86 Copyrights 86 Computer Software Copyrights 86 Usage and Disclosure Restrictions 87 License Agreements 87 Copyri...

Страница 8: ...can understand the Telit ME910G1 module well and quickly develop various products Audience This document is intended system integrators who use the Telit ME910G1 module in their products Contact Info...

Страница 9: ...static Discharge Notifies the user to take proper grounding precautions before handling the product Table 1 Symbol Conventions All dates are in ISO 8601 format that is YYYY MM DD Related Documents 80...

Страница 10: ...n and making it even more ideal for application with battery powered and wearable device Product Variants and Frequency Bands Product HW Rev 2G Band MHz LTE CATM1 NBIoT CS Voice VoLTE External Antenna...

Страница 11: ...band it means the following U S FCC 900MHz that employs 39MHz duplexing UL range 897 5 900 5MHz DL range 936 5 939 5 It is available only in module where AT BNDOPTIONS command contains the string B8_...

Страница 12: ...8 B12 B13 B14 B18 B19 B20 B25 B26 B27 B28 B66 B85 B8_39d LTE CAT M1 5 21 B1 B2 B3 B4 B5 B8 B12 B13 B18 B19 B20 B25 B26 B28 B66 B71 B85 B86 B8_39d LTE CAT NB2 5 21 Table 4 Transmission Output power ME9...

Страница 13: ...LTE CAT NB2 5 21 Table 6 Transmission Output power ME910G1 WWV Max output power tolerance range according to 3GPP TS 36 521 1 and 3GPP TS 51 010 1 or better RX Sensitivity ME910G1 W1 Band REFsens dBm...

Страница 14: ...nd12 116 8 108 2 CAT NB2 Band13 116 8 108 2 CAT NB2 Band18 116 8 108 2 CAT NB2 Band19 116 8 108 2 CAT NB2 Band20 116 6 108 2 CAT NB2 Band25 116 8 CAT NB2 Band26 116 8 108 2 CAT NB2 Band28 116 9 108 2...

Страница 15: ...8 100 8 CAT M1 Band66 106 7 CAT M1 Band85 105 3 CAT NB2 Band1 115 4 108 2 CAT NB2 Band2 116 2 108 2 CAT NB2 Band3 116 4 108 2 CAT NB2 Band4 115 6 CAT NB2 Band5 116 5 108 2 CAT NB2 Band8 115 9 108 2 CA...

Страница 16: ...W1 is 3 5 gr The nominal weight of the ME910G1 WW and ME910G1 WW is 4 gr Temperature Range Temperature Range Note Operating Temperature Range 40 C to 85 C The module is fully functional and compliant...

Страница 17: ...nput for DTR from DTE CMOS 1 8V internal PU 100k L14 C105 RTS I Input for Request to send signal RTS from DTE CMOS 1 8V internal PU 100k P15 C106 CTS O Output for Clear to Send signal CTS to DTE CMOS...

Страница 18: ...LED CMOS 1 8V STAT LED is alternate function internal PD 100K C9 GPIO_02 I O GPIO_02 CMOS 1 8V internal PD 100K C10 GPIO_03 I O GPIO_03 CMOS 1 8V internal PD 100K C11 GPIO_04 I O GPIO_04 CMOS 1 8V int...

Страница 19: ...FORCED_USB_BOOT I Debug pin connect to test point CMOS 1 8V Active high internal PD 100K Power Supply M1 VBATT Main power supply Baseband Power M2 VBATT Main power supply Baseband Power N1 VBATT_PA M...

Страница 20: ...GND Ground Power R3 GND Ground Power D4 GND Ground Power M4 GND Ground Power N4 GND Ground Power P4 GND Ground Power R4 GND Ground Power N5 GND Ground Power P5 GND Ground Power R5 GND Ground Power N6...

Страница 21: ...RESERVED F3 RESERVED RESERVED G3 RESERVED RESERVED K3 RESERVED RESERVED Only on HW0 0 L3 RESERVED RESERVED Only on HW0 0 B4 RESERVED RESERVED C4 RESERVED RESERVED B5 RESERVED RESERVED C5 RESERVED RES...

Страница 22: ...RESERVED RESERVED B11 RESERVED RESERVED B10 RESERVED RESERVED A9 RESERVED RESERVED A8 RESERVED RESERVED E13 RESERVED RESERVED D13 RESERVED RESERVED D14 RESERVED RESERVED A14 RESERVED RESERVED A12 RES...

Страница 23: ...SIMIO RES RES GND GND GND 6 SIMCLK DVI_RX RES GND GND GND 7 SIMRST DVI_TX RES RES RES GNSS_LNA _EN 8 RES DVI_CLK GPIO_01 RES GND GND 9 RES DVI_WA0 GPIO_02 RES GND ANT_GNSS 10 RES RES GPIO_03 RES GND...

Страница 24: ...2 6 V 4 5 V VBATTmin 2 7V Table 11 Power Supply Requirements Warning The range 2 6V 3 2V can be used only if both USB and 2G are disabled Warning The modem supply voltage must never exceed the Extend...

Страница 25: ...mode CATM mA NBIoT mA 2G mA AT CFUN 1 9 5 9 2 9 0 Normal mode full functionality of the module AT CFUN 4 7 5 Disabled TX and RX module is not registered on the network AT CFUN 5 1 20 0 95 Paging cycl...

Страница 26: ...ion ME910G1 W1 Connected Mode Table 14 ME910G1 W1 Connected Mode Mode Measure Typical Mode Description GPS mA Active State GNSS ON CFUN 4 Acquisition 69 3 GPS GLO DPO off Navigation 22 GPS GLO DPO on...

Страница 27: ...500 850 3 75KHz 1 SC RU 32ms TBS 0 BPSK 23dBm Band 13 26 5 18 19 20 8 430 750 3 75KHz 1 SC RU 32ms TBS 0 BPSK 23dBm Band 3 2 25 4 1 66 68 300 15KHz 12 SC RU 1ms TBS 5 QPSK 21dBm Band 71 88 950 15KHz...

Страница 28: ...red output for the power supply is 3 8V since the difference between the input source and the desired output is negligible a linear regulator can be used A switching power supply will not be suitable...

Страница 29: ...n since the switching frequency could also generate EMC interferences For a PB car battery the input voltage may rise up to 15 8V and this must be considered when selecting components all components i...

Страница 30: ...m primary batteries Thermal Design Guidelines Worst case as reference values for thermal design of ME910G1 are Average current consumption 700 mA LTE CAT M1 and NB1 modes Average current consumption 7...

Страница 31: ...h involved very small then the input capacitor the output diode if not embodied into the IC and the regulator will form a very small loop This is done to reduce the radiated field noise at the switchi...

Страница 32: ...and The Host can detect deep sleep mode only by monitoring the VAUX PWRMON output pin since there is no dedicated pin for the PSM status indicator The characteristics of the operating range of the sup...

Страница 33: ...switched ON and AT commands can be processed with some latency ME910G1 is idle with low current consumption Deep sleep mode state PSM defined in 3GPP Release 12 Baseband is switched OFF most of the t...

Страница 34: ...t to LOW for at least 5 seconds Figure 5 Power on Circuit illustrates a simple circuit to power on the module using an inverted buffer output Note Do not use any pull up resistor on the ON_OFF WAKE li...

Страница 35: ...chart showing the proper turn on procedure is displayed below Figure 6 Turn on procedure flow chart Modem ON Proc START VBATT VBATTmin ON_OFF WAKE LOW PWRMON ON Delay 5 sec ON_OFF WAKE HIGH GO TO HW...

Страница 36: ...commands managing procedure flow chart Note To avoid a back powering it is recommended to prevent any HIGH logic level signal from being applied to the digital pins of the ME910G1 when the module is p...

Страница 37: ...pad directly with an ON OFF button Warning It is recommended to set the ON_OFF WAKE line LOW to power on the module only after VBATT is higher than 3 20V If this condition is not satisfied it is possi...

Страница 38: ...ing that the device will no longer be reachable Note To check if the device has been powered off or IN PSM mode the hardware line PWRMON must be monitored The device is powered off when PWRMON goes lo...

Страница 39: ...following flow chart shows the proper turn off procedure Figure 8 turn off procedure flow chart Modem OFF Proc START ON_OFF WAKE LOW PWRMON ON Delay 3 sec ON_OFF WAKE HIGH PWRMON ON GO TO HW SHUTDOWN...

Страница 40: ...down because any cellular device is requested to issue a disconnection request on turn off The HW_SHUTDOWN is internally controlled on start up to always achieve a proper power on reset sequence so t...

Страница 41: ...e 41 of 93 2021 09 24 Not Subject to NDA A typical circuit is the following Figure 9 typical circuit For example Let us assume you need to drive the HW_SHUTDOWN pad with a totem pole output of a 3 5 V...

Страница 42: ...ctioning of the module To proper power on again the module please refer to the related paragraph Power ON The unconditional hardware shutdown must always be implemented on the boards and should be use...

Страница 43: ...ementing the Fast Shut Down feature Fast Shut Down feature permits to reduce the current consumption and the time to poweroff to minimum values Note Refer to ME910G1 series AT command reference guide...

Страница 44: ...on Test points for UART or USB are fine however it is recommend to place the pads for a suitable connector on the port for convenient access for network certification testing and access during early d...

Страница 45: ...must be used SPI The ME910G1 Module is provided by a standard 3 wire master SPI interface chip select control The following table lists the available signals PAD Signal I O Function Type NOTE D15 SPI_...

Страница 46: ...h all the 7 RS232 signals It differs from the PC RS232 in the signal polarity RS232 is reversed and levels The following table lists the available signals RS232 Pin Signal PAD Name Usage 1 C109 DCD N1...

Страница 47: ...he ME910G1 when the module is powered off or during an ON OFF transition Modem serial port 2 USIF1 The auxiliary serial port on the ME910G1 is a CMOS1 8V with only the RX and TX signals The signals of...

Страница 48: ...of level translation is always required The easiest way to translate levels and invert the signal is to use a single chip level translator There are a multitude of them which differ in the number of...

Страница 49: ...n or queried and set the value of the pad output An alternate function pad is controlled internally by the ME910G1 firmware and acts depending on the function implemented The following table shows the...

Страница 50: ...G1 series AT command reference guide for GPIO pins configuration Using a GPIO as OUTPUT GPIO pads when used as outputs can drive 1 8V CMOS digital devices or compatible hardware When set as outputs th...

Страница 51: ...onverter The ME910G1 is includes one AD converter It can read a voltage level in the range of 0 1 8 volts applied on the ADC pin input store it and convert it into 10 bit word The input line is named...

Страница 52: ...o AT command AT ATUNERSEL AT Commands Reference Guide Telit code 80617ST10991A to select GPIO or MIPI interfaces on ATC1 ATC2 pins GPIO ATC1 Pin ATC2 Pin Band Uplink Freq Range MHz 0 0 B1 B2 B3 B4 B25...

Страница 53: ...or the customer shall use the most suitable antenna for that those band s Bandwidth 250 MHz in LTE Band 1 140 MHz in LTE Band 2 PCS1900 170 MHz in LTE Band 3 DCS1800 445 MHz in LTE Band 4 70 MHz in LT...

Страница 54: ...The line geometry should have uniform characteristics constant cross section avoid meanders and sharp curves Any type of suitable geometry structure Microstrip Stripline Coplanar Grounded Coplanar Wav...

Страница 55: ...ries such as Microstrip or Grounded Coplanar Waveguide as they typically ensure less attenuation than a Stripline of the same length The following image is showing the suggested layout for the Antenna...

Страница 56: ...1 mm clearance from a coplanar ground plane 0 3 mm each side The line uses the reference ground plane on layer 3 while copper is removed from layer 2 below the line The height of the trace from the gr...

Страница 57: ...24 Not Subject to NDA Return Loss plot of line under test is shown below Figure 19 Return Loss plot of line under test Line input impedance in Smith Chart format once the line has been terminated to 5...

Страница 58: ...e Antenna integration should not perturb the radiation pattern described in the documentation of the Antenna manufacturer It is preferable to obtain an omnidirectional radiation pattern The Antenna Ga...

Страница 59: ...using digital interface or via one of the several compliant codecs in case an analog audio is needed Electrical Characteristics The product is providing the DVI on the following pins Pin Signal I O Fu...

Страница 60: ...uilt in low noise amplifier must be used and must be supplied with a proper bias tee circuit Guidelines of PCB Line for GNSS Antenna Make sure that the antenna line impedance is 50ohm Keep the antenna...

Страница 61: ...e superficial copper layer for the antenna line The line attenuation will be lower than a buried one Hardware based Solution for GNSS and LTE Coexistence When a stand alone GNSS receiver is present in...

Страница 62: ...cturer s instructions for maximum performance of the GNSS receiver The position of the antenna must be carefully evaluated when operating in conjunction with any other antenna or transmitter The anten...

Страница 63: ...ecoupling inductor could be damaged In case of LNA with 1 8V supply the VAUX POWERMON pin can be used to supply the active GNSS antenna GNSS Characteristics The table below specifies the GNSS characte...

Страница 64: ...ME910G1 Hardware Design Guide 1VV0301593 Rev 12 Page 64 of 93 2021 09 24 Not Subject to NDA 9 MECHANICAL DESIGN Drawing Figure 24 ME910G1 Mechanical Drawing...

Страница 65: ...Rev 12 Page 65 of 93 2021 09 24 Not Subject to NDA 10 APPLICATION PCB DESIGN The ME910G1 modules have been designed to be compliant with a standard lead free SMT process Recommended footprint for the...

Страница 66: ...Hardware Design Guide 1VV0301593 Rev 12 Page 66 of 93 2021 09 24 Not Subject to NDA SOLDER RESIST PATTERN dimensions in mm Figure 26 Solder resist pattern TOP TRANSPARENT VIEW Figure 27 Top transpare...

Страница 67: ...older mask opening is smaller than the metal pad and overlaps the metal on all sides The opening of the solder mask defines the solderable area of the pad In NSMD pads the opening of the solder mask i...

Страница 68: ...mmendations for PCB pad surfaces The PCB must be able to withstand the higher temperatures that occur during the lead free process This issue should be discussed with the PCB supplier In general the w...

Страница 69: ...this choice is the combination of cost performance and manufacturability According to several PCB manufacturers 10 mil holes and 25 mil spacing are reasonable and repeatable production choice A unifo...

Страница 70: ...e modules after assembly Solder Reflow Recommended solder reflow profile Figure 30 Recommended solder reflow profile Profile Feature Pb Free Assembly Free Average ramp up rate TL to TP 3 C second max...

Страница 71: ...r s application throughout the temperature range The customer must optimize the reflow profile based on the overall system considering such factors as thermal mass and warpage Inspection An inspection...

Страница 72: ...irst Marketing and Engineering samples of the ME910G1 series will be shipped with the current packaging of the xE910 modules on trays of 20 pieces each Please note that Telit is going to introduce a n...

Страница 73: ...ME910G1 Hardware Design Guide 1VV0301593 Rev 12 Page 73 of 93 2021 09 24 Not Subject to NDA Figure 32 Tray dimensions...

Страница 74: ...age 74 of 93 2021 09 24 Not Subject to NDA Reel The ME910 can be packaged on reels of 200 pieces each See figure for module positioning into the carrier Figure 33 Module positioning into the carrier C...

Страница 75: ...ME910G1 Hardware Design Guide 1VV0301593 Rev 12 Page 75 of 93 2021 09 24 Not Subject to NDA Reel Detail Figure 35 Reel detail Figure 36 Detail...

Страница 76: ...r the customer must take care of the following conditions a Calculated shelf life in sealed bag 12 months at 40 C and 90 relative humidity RH b Environmental condition during production 30 C 60 RH acc...

Страница 77: ...WW and ME910G1 WWV Modules are in compliance with Directive 2014 53 EU The full text of the EU declaration of conformity is available at the following internet address http www telit com red Text of 2...

Страница 78: ...robation FCC Certificates The FCC Certificate is available here https www fcc gov oet ea fccid ISED Certificate ISDE Certificates The ISED Certificate is available here Le certificat ISDE est disponib...

Страница 79: ...uire de brouillage et 2 l utilisateur de l appareil doit accepter tout brouillage radio lectrique subi m me si le brouillage est susceptible d en compromettre le fonctionnement Wireless notice Wireles...

Страница 80: ...Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experience...

Страница 81: ...te with the antenna types listed below with the maximum permissible gain indicated Antenna types not included in this list having a gain greater than the maximum gain indicated for that type are stric...

Страница 82: ...8 6 5 6 5 6 Table 44 Gain maximum for ISED dBi FCC Label and Compliance Information The product has an FCC ID label on the device itself Also the OEM host end product manufacturer will be informed to...

Страница 83: ...un module d ISDE devra tre appos e sur le produit h te un endroit bien en vue en tout temps En l absence d tiquette le produit h te doit porter une tiquette sur laquelle figure le num ro d homologatio...

Страница 84: ...r compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification If the grantee markets their product as being Part 15 Subpart B compliant when...

Страница 85: ...module NCC logo NCC ID CCAF20NB0050T0 NCC safety warning statement NCC Note 2G 106 6 2G JRL JTBL Regulatory Notices According to Japanese JRL JTBL requirements the module and the packaging shall disp...

Страница 86: ...do not necessarily mean that Telit intends to announce such Telit products programming or services in your country Copyrights This instruction manual and the Telit products described herein may includ...

Страница 87: ...this document is owned by Telit and its licensors It is furnished by express license agreement only and shall be used exclusively in accordance with the terms of such agreement Copyrighted Materials...

Страница 88: ...A PARTICULAR PURPOSE NO THIRD PARTY LICENSORS OF OTHER CODES MUST BE LIABLE FOR ANY DIRECT INDIRECT INCIDENTAL SPECIAL EXEMPLARY OR CONSEQUENTIAL DAMAGES INCLUDING WITHOUT LIMITATION LOST OF PROFITS H...

Страница 89: ...nstruction for its use Do not insert or remove the SIM when the product is in power saving mode The system integrator is responsible for the functioning of the final product Therefore the external com...

Страница 90: ...Speed Downlink Packet Access HSIC High Speed Inter Chip HSUPA High Speed Uplink Packet Access I O Input Output MISO Master Input Slave Output MOSI Master Output Slave Input PCB Printed Circuit Board...

Страница 91: ...2021 02 22 Section 3 2 LGA pads layout correction 7 2021 02 02 Reviewed template design and styles Section 2 4 update Chapter 4 update Sections 6 1 6 2 6 3 removed redundant Section 7 2 removed Sectio...

Страница 92: ...2 2020 01 23 Conformity assessment update Power consumption figures update RX Sensitivity figures update RF Section update Pull up down values update 1 2019 08 29 Bands support updating Added ME910G1...

Страница 93: ......

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