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GL865-DUAL V3 Hardware User Guide 

1vv0301018  Rev.5 – 2013-08-05 

 

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

Page 33 of 76 

Mod. 0805 2011-07 Rev.2

 

7.2.

 

PCB Design Guidelines 

 

This section explains the suggested design for the transmission line on the customer’s 

application board. 

7.2.1.

 

Transmission line design 

During the design of the GL865-DUAL V3 interface board, the placement of components has 

been chosen properly, in order to keep the line length as short as possible, thus leading to 

lowest power losses possible. A Grounded Coplanar Waveguide (G-CPW) line has been 

chosen, since this kind of transmission line ensures good impedance control and can be 

implemented in an outer PCB layer as needed in this case. A SMA female connector has been 

used to feed the line. 

The interface board is realized on a FR4, 4-layers PCB. Substrate material is characterized by 

relative permittivity ε

r

 = 4.6 ± 0.4 @ 1 GHz, TanD= 0.019 ÷ 0.026 @ 1 GHz. 

A characteristic impedance of nearly 50 Ω is achieved using trace width = 1.1 mm, clearance 

from coplanar ground plane = 0.3 mm each side. The line uses reference ground plane on 

layer 3, while copper is removed from layer 2 underneath the line. Height of trace above 

ground plane is 1.335 mm. Calculated characteristic impedance is 51.6 Ω, estimated line loss 

is less than 0.1 dB. The line geometry is shown below: 

 

Содержание GL865-DUAL V3

Страница 1: ...GL865 DUAL V3 Hardware User Guide 1vv0301018 Rev 5 2013 08 05...

Страница 2: ...User Guide 1vv0301018 Rev 5 2013 08 05 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 2 of 76 Mod 0805 2011 07 Rev 2 APPLICABILITY TABLE...

Страница 3: ...untries 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 c...

Страница 4: ...val system or 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...

Страница 5: ...Dimensions 13 4 GL865 DUAL V3 module connections 14 4 1 PIN OUT 14 4 2 Pin Layout 17 5 Hardware Commands 18 5 1 Auto Turning ON the GL865 DUAL V3 18 5 2 Turning OFF the GL865 DUAL V3 20 5 3 Resetting...

Страница 6: ...MIC connection 43 10 2 LINE IN connection 44 10 3 EAR connection 46 10 4 Electrical Characteristics 48 10 4 1 Input Lines 48 10 4 2 Output Lines 49 11 General Purpose I O 50 11 1 GPIO Logic levels 51...

Страница 7: ...ion 60 12 2 2 Using ADC Converter 60 13 Mounting the GL865 DUAL V3 on your Board 61 13 1 General 61 13 2 Module finishing dimensions 61 13 3 Recommended foot print for the application 62 13 4 Stencil...

Страница 8: ...L865 DUAL V3 Hardware User Guide 1vv0301018 Rev 5 2013 08 05 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 8 of 76 Mod 0805 2011 07 Rev...

Страница 9: ...r general contact technical support to report documentation errors and to order manuals contact Telit Technical Support Center TTSC at TS EMEA telit com TS NORTHAMERICA telit com TS LATINAMERICA telit...

Страница 10: ...na connection and board layout design are the most important parts in the full product design Chapter 8 Logic Level specifications Specific values adopted in the implementation of logic levels for thi...

Страница 11: ...ating the module if these 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 m...

Страница 12: ...tions shall not be considered mandatory the information given shall be used as a guide and a starting point for properly developing your product with the Telit GL865 DUAL V3 module For further hardwar...

Страница 13: ...ion forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 13 of 76 Mod 0805 2011 07 Rev 2 3 GL865 DUAL V3 Mechanical Dimensions The GL865 DUAL V3 overall dim...

Страница 14: ...5 TXD_AUX O Auxiliary UART TX Data CMOS 1 8V Prog Data HW Flow Control 1 C109 DCD GPO O Output for Data carrier detect signal DCD to DTE GP output CMOS 1 8V 2 C125 RING GPO O Output for Ring indicator...

Страница 15: ...Disable DVI_CLK I O GPIO04 Configurable GPIO TX Disable input Digital Audio Interface CLK CMOS 1 8V 29 GPIO_05 RFTXMON I O GPIO05 Configurable GPIO Transmitter ON monitor CMOS 1 8V 28 GPIO_06 ALARM I...

Страница 16: ...rom Telit Communications S p A All Rights Reserved Page 16 of 76 Mod 0805 2011 07 Rev 2 NOTE If not used almost all pins should be left disconnected The only exceptions are the following pins Pin sign...

Страница 17: ...on forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 17 of 76 Mod 0805 2011 07 Rev 2 4 2 Pin Layout TOP VIEW NOTE The pins defined as NC RFU shall be con...

Страница 18: ...A after 1000 m seconds the V_AUX PWRMON pin will be at the high logic level and the module can be considered fully operating When the power supply voltage is between 3 22V and 3 4V after 5000 m second...

Страница 19: ...e sequence shall be avoided The reverse procedure applies for powering down the module first disconnect VBATT then VBATT_PA or both at once NOTE In order to prevent a back powering effect it is recomm...

Страница 20: ...FF condition no power consumption is present Processor turn OFF disconnect the power supply only from the power pin VBATT the power pin VBATT_PA can be connected to power supply in this case a low abo...

Страница 21: ...G POWERMON can be used to monitor only the power on but it cannot be used to monitor the power off because it remains high Instead AT SYSHALT works in the same way as previous GL865 DUAL V2 NOTE In or...

Страница 22: ...itionally reboot the GL865 DUAL V3 the pad RESET must be tied low for at least 200 milliseconds and then released The maximum current that can be drained from the ON pad is 0 15 mA NOTE Do not use any...

Страница 23: ...ll Rights Reserved Page 23 of 76 Mod 0805 2011 07 Rev 2 NOTE In order to prevent a back powering effect it is recommended to avoid having any HIGH logic level signal applied to the digital pins of the...

Страница 24: ...ng Voltage Range 3 40 V 4 20 V Extended Operating Voltage Range 3 10 V 4 50 V NOTE The Operating Voltage Range MUST never be exceeded care must be taken when designing the application s power supply s...

Страница 25: ...00 DCS1800 CSD PL0 150 GPRS class 1 1TX 1RX GPRS Sending data mode GSM900 PL5 200 DCS1800 PL0 140 GPRS class 10 2TX 3RX GPRS Sending data mode GSM900 PL5 330 DCS1800 PL0 250 The GSM system is made in...

Страница 26: ...input Source Power Supply Design Guidelines The desired output for the power supply is 3 8V hence there s not a big difference between the input source and the desired output and a linear regulator c...

Страница 27: ...peaks absorption In any case the frequency and Switching design selection is related to the application to be developed due to the fact the switching frequency could also generate EMC interferences Fo...

Страница 28: ...e for the GL865 DUAL V3 and damage it NOTE DON T USE any Ni Cd Ni MH and Pb battery types directly connected with GL865 DUAL V3 Their use can lead to overvoltage on the GL865 DUAL V3 and damage it USE...

Страница 29: ...vel at which the device is requested to transmit by the network The average current consumption hence varies significantly Considering the very low current during idle especially if Power Saving funct...

Страница 30: ...line at the current peaks frequency of approx 217 Hz that will reflect on all the components connected to that supply introducing the noise floor at the burst base frequency For this reason while a v...

Страница 31: ...t GL865 DUAL V3 device shall fulfill the following requirements ANTENNA REQUIREMENTS Frequency range 880 960 MHz GSM900 band 1710 1885MHz MHz DCS1800 band Gain 1 4dBi GSM900 and 3dBi DCS1800 Impedance...

Страница 32: ...n avoid meanders and abrupt curves Keep if possible one layer of the PCB used only for the Ground plane Surround on the sides over and under the antenna line on PCB with Ground avoid having other sign...

Страница 33: ...lanar Waveguide G CPW line has been chosen since this kind of transmission line ensures good impedance control and can be implemented in an outer PCB layer as needed in this case A SMA female connecto...

Страница 34: ...NA Full 2 port calibration has been used in this measurement session A calibrated coaxial cable has been soldered at the pad corresponding to GL865 DUAL V3 RF output a SMA connector has been soldered...

Страница 35: ...ritten authorization from Telit Communications S p A All Rights Reserved Page 35 of 76 Mod 0805 2011 07 Rev 2 Line input impedance in Smith Chart format once the line has been terminated to 50 load is...

Страница 36: ...of 76 Mod 0805 2011 07 Rev 2 7 3 GSM Antenna Installation Guidelines Install the antenna in a place covered by the GSM signal Antenna shall not be installed inside metal cases Antenna shall be instal...

Страница 37: ...s work at 1 8V CMOS logic levels The following table shows the logic level specifications used in the GL865 DUAL V3 interface circuits Absolute Maximum Ratings Not Functional Parameter Min Max Input l...

Страница 38: ...t signal must not be used to normally shutting down the device but only as an emergency exit in the rare case the device remains stuck waiting for some network response The RESET is internally control...

Страница 39: ...3V or other voltages different from 1 8V microcontroller UART 5V or other voltages different from 1 8V Depending from the type of serial port on the OEM hardware a level translator circuit may be nee...

Страница 40: ...ule is ready 7 RTS rts_uart 5 Request to Send Input to the GL865 DUAL V3 that controls the Hardware flow control 8 CTS cts_uart 6 Clear to Send Output from the GL865 DUAL V3 that controls the Hardware...

Страница 41: ...signal voltage must be less than 0V and hence some sort of level translation is always required The simplest way to translate the levels and invert the signal is by using a single chip level translat...

Страница 42: ...Reserved Page 42 of 76 Mod 0805 2011 07 Rev 2 An example of RS232 level adaptation circuitry could be done using a MAXIM transceiver MAX218 In this case the chipset is capable to translate directly f...

Страница 43: ...preferable since the residual Vmic noise is fed into the input as common mode and therefore rejected while the ground noise is blocked by the high impedance of the microphone electret mike is a curren...

Страница 44: ...nce the J FET transistor inside the microphone acts as RF detector amplifier ask vendor for a microphone with anti EMI capacitor usually a 33pF or a 10pF capacitor placed across the output terminals i...

Страница 45: ...e following connections can be done Place a 1Kohm resistor to ground on the negative input in order to get balanced the input than connect the source via 1uF capacitor so the DC current is blocked Sin...

Страница 46: ...NOTE When the loudspeaker is connected with a long cable an L C filter is recommended When the EAR are feeding some electronic circuitry an R C filter is recommended TIP in order to get the maximum a...

Страница 47: ...en without written authorization from Telit Communications S p A All Rights Reserved Page 47 of 76 Mod 0805 2011 07 Rev 2 L C filtering for LOW impedance load R C filtering for HIGH impedance load EAR...

Страница 48: ...l input voltage MIC Gain 0dB 290mVrms MIC Gain 6dB 145mVrms MIC Gain 12dB 72mVrms MIC Gain 18dB 36mVrms MIC Gain 24dB 18mVrms MIC Gain 30dB 9mVrms MIC Gain 36dB 4 5mVrms MIC Gain 42dB 2 25mVrms 0 dBfs...

Страница 49: ...B with default filter max differential output voltage 1120 mVpp 3 14dBm0 differential output voltage 550mVrms 0dBm0 volume increment 2dB per step volume steps 0 10 in default condition Output Volume 2...

Страница 50: ...the available GPIO on the GL865 DUAL V3 Pin Signal I O Function Type Input output current Default State ON_OFF state State during Reset Note 42 GPIO_01 I O Configurable GPIO CMOS 1 8V 1uA 1mA INPUT 0...

Страница 51: ...GPI_E I Configurable GPI CMOS 1 8V 1uA 1mA INPUT 0 0 Alternate function C108 DTR 5 GPI_F I Configurable GPI CMOS 1 8V 1uA 1mA INPUT 0 0 Alternate function C105 RTS 6 GPO_D O Configurable GPO CMOS 1 8...

Страница 52: ...reference or and for ON monitoring 11 3 Using a GPIO Pad as OUTPUT The GPIO pads when used as outputs can drive 1 8V CMOS digital devices or compatible hardware When set as outputs the pads have a pu...

Страница 53: ...s output can be used to controlling microcontroller or application at the alarm time 11 7 Using the Buzzer Output GPIO7 The GPIO7 pad when configured as Buzzer Output is controlled by the GL865 DUAL V...

Страница 54: ...ng device with a coil located in the magnetic circuit consisting of a permanent magnet an iron core a high permeable metal disk and a vibrating diaphragm Drawing of the Magnetic Buzzer The disk and di...

Страница 55: ...by lowering the amplitude of the driving signal the response bandwidth tends to become narrow and vice versa Summarizing Vpp fo Vpp fo The risk is that the fo could easily fall outside of new bandwidt...

Страница 56: ...tion on the network service availability and Call status In the GL865 DUAL V3 modules the STAT_LED usually needs an external transistor to drive an external LED Therefore the status indicated in the f...

Страница 57: ...ommon profile For full details see AT Commands Reference Guide 80000ST10025a NOTE Don t use the SIM IN function on the same pin where the GPIO function is enabled and vice versa 11 11 RTC Bypass out T...

Страница 58: ...n 15 of the GL865 DUAL V3 The on board DAC is a 10 bit converter able to generate an analogue value based on a specific input in the range from 0 up to 1023 However an external low pass filter is nece...

Страница 59: ...DAC An AT command is available to use the DAC function The command is AT DAC enable value value scale factor of the integrated output voltage 0 1023 10 bit precision it must be present if enable 1 Ref...

Страница 60: ...ge of 0 2 volts applied on the ADC pin input store and convert it into 11 bit word Min Max Units Input Voltage range 0 1 2 Volt AD conversion 10 bits Resolution 1 mV The GL865 DUAL V3 module provides...

Страница 61: ...A All Rights Reserved Page 61 of 76 Mod 0805 2011 07 Rev 2 13 Mounting the GL865 DUAL V3 on your Board 13 1 General The GL865 DUAL V3 modules have been designed to be compliant with a standard lead f...

Страница 62: ...of 76 Mod 0805 2011 07 Rev 2 13 3 Recommended foot print for the application In order to easily rework the GL865 DUAL V3 is suggested to consider on the application a 1 5 mm placement inhibited area...

Страница 63: ...05 2011 07 Rev 2 Stencil s apertures layout can be the same of the recommended footprint 1 1 we suggest a thickness of stencil foil 120 m 13 5 PCB pad design Non solder mask defined NSMD type is recom...

Страница 64: ...commendations for PCB pad surfaces Finish Layer thickness m Properties Electro less Ni Immersion Au 3 7 0 05 0 15 good solder ability protection high shear force values The PCB must be able to resist...

Страница 65: ...mmunications S p A All Rights Reserved Page 65 of 76 Mod 0805 2011 07 Rev 2 13 7 Solder paste Lead free Solder paste Sn Ag Cu We recommend using only no clean solder paste in order to avoid the cleani...

Страница 66: ...mperature tp 10 30 seconds Ramp down Rate 6 C second max Time 25 C to Peak Temperature ttp 8 minutes max NOTE All temperatures refer to topside of the package measured on the package body surface WARN...

Страница 67: ...thout written authorization from Telit Communications S p A All Rights Reserved Page 67 of 76 Mod 0805 2011 07 Rev 2 14 Packing system 14 1 Packing on tray The GL865 DUAL V3 modules are packaged on tr...

Страница 68: ...865 DUAL V3 Hardware User Guide 1vv0301018 Rev 5 2013 08 05 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 68 of 76 Mod 0805 2011 07 Rev...

Страница 69: ...08 05 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 69 of 76 Mod 0805 2011 07 Rev 2 14 2 Packing on reel The GL865 V3 can be packaged o...

Страница 70: ...uide 1vv0301018 Rev 5 2013 08 05 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 70 of 76 Mod 0805 2011 07 Rev 2 14 2 1 Carrier tape detai...

Страница 71: ...er has to take care of the following conditions a The shelf life of the Product inside of the dry bag must be 12 months from the bag seal date when stored in a non condensing atmospheric environment o...

Страница 72: ...hin uetele ja nimetatud direktiivist tulenevatele teistele asjakohastele s tetele German Hiermit erkl rt Telit Communications S p A dass sich das Ger t Dual Band GSM GPRS module in bereinstimmung mit...

Страница 73: ...ual Band GSM GPRS module est conforme com os requisitos essenciais e outras disposi es da Directiva 1999 5 CE Slovak Telit Communications S p A t mto vyhlasuje e Dual Band GSM GPRS module sp a z kladn...

Страница 74: ...the following marking is included in the product The full declaration of conformity can be found on the following address http www telit com There is no restriction for the commercialisation of the GL...

Страница 75: ...product itself Same cautions have to be taken for the SIM checking carefully the instruction for its use Do not insert or remove the SIM when the product is in power saving mode The system integrator...

Страница 76: ...07 Rev 2 17 Document History Revision Date Changes 0 2012 06 28 First issue 1 2012 11 09 Updated power consumption and audio section 2 2013 01 30 Updated power consumption and Conformity Assessment se...

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