Telit Wireless Solutions GE866-QUAD Hardware User'S Manual Download Page 49

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GE866-QUAD Hardware User Guide

1VV0301051 Rev. 11

–

2019-12-05

Page 49 of 82

Mod. 0805 2011-07 Rev.2

100n

100

33pF

100n

100

33pF

MIC+

MIC-

GND

Vmic

÷10K

2÷5v

÷10u

TELIT MODULE

INPUT

ADC

TIP: Since 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 inside the case).

10.2.

LINE-IN connection

100n

100

33pF

100n

100

33pF

MIC+

MIC-

GND

1
Remote_GND

TELIT MODULE

INPUT

ADC

Summary of Contents for GE866-QUAD

Page 1: ...GE866 QUAD Hardware User Guide 1VV0301051 Rev 11 2019 12 05...

Page 2: ...User Guide 1VV0301051 Rev 11 2019 12 05 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 2 of 82 Mod 0805 2011 07 Rev 2 APPLICABILITY TABLE...

Page 3: ...ntries 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 co...

Page 4: ...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 in...

Page 5: ...2 3 GE866 QUAD Mechanical Dimensions 13 4 GE866 QUAD module connections 14 4 1 PIN OUT 14 4 2 Pin Layout 17 5 Hardware Commands 18 5 1 Auto Turning ON the GE866 QUAD 18 5 2 Turning OFF the GE866 QUAD...

Page 6: ...al 43 9 Serial Ports 44 9 1 Modem Serial Port 44 9 2 RS232 levels translation 46 10 Audio Section Overview 48 10 1 MIC Connection 48 10 2 LINE IN connection 49 10 3 EAR Connection 51 10 4 Electrical C...

Page 7: ...1 2 Enabling DAC 64 12 1 3 Low Pass Filter Example 65 12 2 ADC Converter 65 12 2 1 Description 65 12 2 2 Using ADC Converter 66 13 Mounting the GE866 on your Board 67 13 1 General 67 13 2 Module fini...

Page 8: ...ardware User Guide 1VV0301051 Rev 11 2019 12 05 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 8 of 82 Mod 0805 2011 07 Rev 2 17 Document...

Page 9: ...neral 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 com...

Page 10: ...a 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 this...

Page 11: ...grating 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...

Page 12: ...the wrong solutions shall be considered as mandatory While the suggested hardware configurations shall not be considered mandatory the information given shall be used as a guide and a starting point...

Page 13: ...on forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 13 of 82 Mod 0805 2011 07 Rev 2 3 GE866 QUAD Mechanical Dimensions The GE866 QUAD overall dimensions...

Page 14: ...med SIMIN I Presence SIM input CMOS 1 8V Trace C2 RXD_AUX I Auxiliary UART RX Data CMOS 1 8V C1 TXD_AUX O Auxiliary UART TX Data CMOS 1 8V Prog Data HW Flow Control B2 C109 DCD GPO O Output for Data...

Page 15: ...TX I O GPIO03 GPIO I O pin Digital Audio Interface TX CMOS 1 8V D5 GPIO_04 TX Disable DVI_CLK I O GPIO04 Configurable GPIO TX Disable input Digital Audio Interface CLK CMOS 1 8V B5 GPIO_05 RFTXMON I O...

Page 16: ...when voltage translation to 1V8 CMOS is needed When its use is necessary it is strongly recommended to connect VAUX through a series resistor as closed as possible to the module in order to reduce the...

Page 17: ...CD RXD_AUX GND VABTT GND ANT 3 C107 DSR C125 RING GND RESERVED GND GND GND 4 C103 TXD GPIO_06 ALRM BUZZER GPIO_07 STAT_LED RESERVED DAC_OUT ADC_IN RESET 5 C104 RXD GPIO_05 RFTXMON GPIO_01 DVI_WAO GPIO...

Page 18: ...ter 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 seconds th...

Page 19: ...te 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 recom...

Page 20: ...E866 QUAD Hardware User Guide 1VV0301051 Rev 11 2019 12 05 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 20 of 82 Mod 0805 2011 07 Rev 2...

Page 21: ...is case all parts of the module are in OFF 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 connecte...

Page 22: ...can be used to monitor only the power on but it cannot be used to monitor the power off because it remains high NOTE In order to prevent a back powering effect it is recommended to avoid having any H...

Page 23: ...current consumption and the time to power SYSHALT to minimum values NOTE Refer to AT command reference guide Fast Sys Halt FASTSYSHALT in order to set up detailed AT command 5 3 1 Fast SYSHALT by Hard...

Page 24: ...halt and 0 5V is the minimum voltage margin from threshold of hardware reset NOTE Verify carefully the timings and failure voltages levels during system verifications WARNING Ctank associated with low...

Page 25: ...hat can be drained from the ON pad is 0 15 mA NOTE Do not use any pull up resistor on the RESET line nor any totem pole digital output Using pull up resistor may bring to latch up problems on the GE86...

Page 26: ...805 2011 07 Rev 2 A simple circuit to do it is NOTE Since the GE866 is a miniaturized form factor device and it is often integrated into small applications with embedded antenna placed close to the mo...

Page 27: ...ll Rights Reserved Page 27 of 82 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...

Page 28: ...g 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 se...

Page 29: ...200 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 i...

Page 30: ...utomotive Battery 6 3 1 1 5V 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 out...

Page 31: ...This allows the regulator to respond quickly to the current peaks absorption In any case the frequency and Switching design selection is related to the application to be developed due to the fact the...

Page 32: ...of 82 Mod 0805 2011 07 Rev 2 An example of switching regulator with 12V input is in the below schematic 6 3 1 3 Battery Source Power Supply Design Guidelines The desired nominal output for the power...

Page 33: ...to the power input in order to save the GE866 QUAD from power polarity inversion Otherwise the battery connector should be done in a way to avoid polarity inversions when connecting the battery The b...

Page 34: ...n forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 34 of 82 Mod 0805 2011 07 Rev 2 This generated heat will be mostly conducted to the ground plane unde...

Page 35: ...ss but especially to avoid the voltage drops on the power line at the current peaks frequency of approx 217 Hz that will reflect on all the components connected to that supply introducing the noise fl...

Page 36: ...Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 36 of 82 Mod 0805 2011 07 Rev 2 The power supply input cables should be kept separate fro...

Page 37: ...NTS Frequency range 824 894 MHz GSM850 band 880 960 MHz GSM900 band 1710 1885MHz DCS1800 band 1850 1990MHz PCS1900 band Gain 1 4dBi GSM900 and 3dBi DCS1800 1 4dBi GSM850 and 3dBi PCS1900 Impedance 50...

Page 38: ...nna line loss shall be less than 0 3 dB Antenna line must have uniform characteristics constant cross section avoid meanders and abrupt curves Keep if possible one layer of the PCB used only for the G...

Page 39: ...nar 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...

Page 40: ...session A calibrated coaxial cable has been soldered at the pad corresponding to GE866 QUAD RF output a SMA connector has been soldered to the board in order to characterize the losses of the transmi...

Page 41: ...rtion Loss of G CPW line plus SMA connector is shown below 7 3 GSM Antenna installation Guidelines Install the antenna in a place covered by the GSM signal Antenna shall not be installed inside metal...

Page 42: ...Where not specifically stated all the interface circuits work at 1 8V CMOS logic levels The following table shows the logic level specifications used in the GE866 QUAD interface circuits Parameter Min...

Page 43: ...on the Reset 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 interna...

Page 44: ...er UART 1 8V Universal Asynchronous Receive Transmit microcontroller UART 3V or other voltages different from 1 8V microcontroller UART 5V or other voltages different from 1 8V Depending from the type...

Page 45: ...e GE866 QUAD that indicates the module is ready 7 RTS rts_uart A1 Request to Send Input to the GE866 QUAD that controls the Hardware flow control 8 CTS cts_uart B1 Clear to Send Output from the GE866...

Page 46: ...ignal 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 translator...

Page 47: ...Reserved Page 47 of 82 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 fr...

Page 48: ...This sounds strange usually the connection to use in order to reject the common mode is the balanced one In this situation we have to recall that the microphone is a sound to current transducer so the...

Page 49: ...33pF 100n 100 33pF 33pF 1K 1u MIC MIC GND Vmic 10K 2 5v 10u TELIT MODULE INPUT ADC TIP Since the J FET transistor inside the microphone acts as RF detector amplifier ask vendor for a microphone with a...

Page 50: ...N LINE_IN If the audio source is not a mike but a different device the following connections can be done Place 100nF capacitor in series with both inputs so the DC current is blocked Place the 33pF 10...

Page 51: ...iency and thus a big power budget 0 7W being a class D architecture please use some caution see the NOTE below NOTE When the loudspeaker is connected with a long cable an L C filter is recommended Whe...

Page 52: ...Rev 2 WARNING This The audio output hardware of the GE866 QUAD is based on a Class D amplifier so any singled end output configuration MUST NOT BE USED otherwise the presence of GSM buzzing and low l...

Page 53: ...ical Characteristics 10 4 1 Input lines Microphone Line in path Line Type Differential Coupling capacitor 100nF Differential input resistance 50k Levels To have 0 dBfs 1KHz Differential input voltage...

Page 54: ...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 20...

Page 55: ...to chapter 8 The following table shows the available GPIO on the GE866 QUAD Pin Signal I O Function Type Input output current Default State ON_OFF state State during Reset Note C5 GPIO_01 I O Configu...

Page 56: ...1 8V 1uA 1mA INPUT 0 0 Alternate function C107 DSR A2 GPI_E I Configurable GPI CMOS 1 8V 1uA 1mA INPUT 0 0 Alternate function C108 DTR A1 GPI_F I Configurable GPI CMOS 1 8V 1uA 1mA INPUT 0 0 Alternate...

Page 57: ...order to avoid a back powering effect it is recommended to avoid having any HIGH logic level signal applied to the digital pins of the GE866 QUAD when the module is powered OFF or during an ON OFF tr...

Page 58: ...ed the line will be HIGH during all the conversation and it will be again LOW after hanged up The line rises up 300ms before first TX burst and will became again LOW from 500ms to 1s after last TX bur...

Page 59: ...square waves This permits to your application to easily implement Buzzer feature with ringing tones or melody played at the call incoming tone playing on SMS incoming or simply playing a tone or melo...

Page 60: ...g 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 dia...

Page 61: ...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...

Page 62: ...tion on the network service availability and Call status In the GE866 QUAD modules the STAT_LED usually needs an external transistor to drive an external LED Therefore the status indicated in the foll...

Page 63: ...mmon 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 10 RTC Bypass out Th...

Page 64: ...ver an external low pass filter is necessary Min Max Units Voltage range filtered 0 1 8 Volt Range 0 1023 Steps The precision is 10 bits so if we consider that the maximum voltage is 2V the integrated...

Page 65: ...r must not be used during POWERSAVING 12 1 3 Low Pass Filter Example 12 2 ADC Converter 12 2 1 Description The on board A D converter is a 11 bit converter It s able to read a voltage level in the ran...

Page 66: ...unications S p A All Rights Reserved Page 66 of 82 Mod 0805 2011 07 Rev 2 Available on pin F4 12 2 2 Using ADC Converter An AT command is available to use the ADC function The command is AT ADC 1 2 Th...

Page 67: ...t Communications S p A All Rights Reserved Page 67 of 82 Mod 0805 2011 07 Rev 2 13 Mounting the GE866 on your Board 13 1 General The GE866 modules have been designed in order to be compliant with a st...

Page 68: ...V0301051 Rev 11 2019 12 05 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 68 of 82 Mod 0805 2011 07 Rev 2 13 3 Recommended foot print for...

Page 69: ...E866 QUAD Hardware User Guide 1VV0301051 Rev 11 2019 12 05 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 69 of 82 Mod 0805 2011 07 Rev 2...

Page 70: ...2 In order to easily rework the GE866 is suggested to consider on the application a 1 5 mm placement inhibit area around the module It is also suggested as common rule for an SMT component to avoid ha...

Page 71: ...rved Page 71 of 82 Mod 0805 2011 07 Rev 2 13 4 Stencil 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...

Page 72: ...ea of 0 3 mm around the pads unless it carries the same signal of the pad itself see following figure Holes in pad are allowed only for blind holes and not for through holes Recommendations for PCB pa...

Page 73: ...lder paste on the described surface plating is better compared to lead free solder paste It is not necessary to panel the application PCB however in that case it is suggested to use milled contours an...

Page 74: ...5 2011 07 Rev 2 13 8 GE866 Solder reflow Recommended solder reflow profile Profile Feature Pb Free Assembly Average ramp up rate TL to TP 3 C second max Preheat Temperature Min Tsmin Temperature Max T...

Page 75: ...Temperature 8 minutes max NOTE All temperatures refer to topside of the package measured on the package body surface WARNING The GE866 module withstands one reflow process only WARNING The above solde...

Page 76: ...Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 76 of 82 Mod 0805 2011 07 Rev 2 14 Packing system 14 1 Packing on reel The GE866 modules...

Page 77: ...ithout written authorization from Telit Communications S p A All Rights Reserved Page 77 of 82 Mod 0805 2011 07 Rev 2 14 2 Packing on tray The GE866 modules are packaged on trays of 98 pieces each see...

Page 78: ...01051 Rev 11 2019 12 05 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 78 of 82 Mod 0805 2011 07 Rev 2 WARNING These trays can withstand...

Page 79: ...stomer has to take care of the following conditions a The shelf life of the Product inside of the dry bag is 12 months from the bag seal date when stored in a non condensing atmospheric environment of...

Page 80: ...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...

Page 81: ...9 12 05 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 81 of 82 Mod 0805 2011 07 Rev 2 16 Conformity assessment issues 16 1 ANATEL Regula...

Page 82: ...on your Board Rev 4 2014 12 18 Updated Weight Updated Section 6 2 Power Consumption Updated Section 10 1 MIC Connection Updated Section 13 3 Updated Section 14 Packing system Rev 5 2015 01 08 Updated...

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