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GPS/GLONASS Receiver Module A5100-A User Guide

29

7

Mounting

This chapter describes the suggested mounting process for the

A5100-A

receiver

modules. In a RoHS compliant product with a RoHS compliant process it is recom-
mended to use chemical tin as the counter-pa

rt to the module’s pins. This will guar-

antee highest resistance against shocks.

7.1 Proposed Footprint for Soldering

Following soldering footprint parameters are recommended:

•

Copper and solder paste footprint are identical

•

Pad-shape / -size, inner pads: 1.2 mm x 1.2 mm

•

Pad-shape / -size, outer pads: 1.5 mm x 0.8 mm

•

Stencil thickness of 120

– 150 µm

Figure 13: Recommended Solder PAD Layout

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Summary of Contents for A5100-A

Page 1: ...GPS GLONASS Receiver Module A5100 A User Guide Part Number PMD 00033 Revision A November 2019 ...

Page 2: ...ter Drive Suite 100 Irvine CA 92618 USA Toll Free 800 526 8766 Phone 949 453 3990 Fax 949 453 3995 Technical Support Online www lantronix com support Sales Offices For a current list of our domestic and international sales offices go to the Lantronix web site at www lantronix com about us contact Disclaimer All information contained herein is provided AS IS Lantronix undertakes no obligation to up...

Page 3: ...thon License is available at http cmpt165 csil sfu ca Python Docs license html Your use of each Open Source com ponent or software is subject to the terms of the applicable license OPEN SOURCE SOFTWARE IS DISTRIBUTED WITHOUT ANY WARRANTY INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE SEE THE APPLICABLE LICENSE AGREEMENT FOR ADDITIONAL INFORMATION You may requ...

Page 4: ..._____________11 1 5 2 Mechanical Characteristics ________________________________________11 1 6 Handling Precautions _________________________________________________11 2 Ordering Information 12 2 1 GPS GLONASS Receiver A5100 A ______________________________________12 2 2 Packing of the A5100 A _______________________________________________12 2 3 Additional Equipment _____________________________...

Page 5: ..._________________________34 10 Applications and Hints 35 10 1 Initial Module Start __________________________________________________35 10 2 Proper Shutdown ___________________________________________________35 10 3 SiRFawareTM Support________________________________________________35 10 4 Push to Fix Mode ___________________________________________________35 10 5 Hibernate Mode __________________...

Page 6: ...0 A 19 Figure 9 Self start configuration A5100 A with Vbak 20 Figure 10 Mechanical outline component side A5100 A 21 Figure 11 Mechanical outline solder side A5100 A 22 Figure 12 Pin out information bottom view A5100 A 23 Figure 13 Recommended Solder PAD Layout 29 Figure 14 Antenna connector strip line A5100 A 31 Figure 15 Strip line parameters A5100 A 31 Figure 16 Strip line parameters A5100 A 37...

Page 7: ...ions and weight 11 Table 3 Additional equipment 14 Table 4 Set Serial Port Data Format 18 Table 5 Pin description A5100 A 25 Table 6 A5100 A electrical characteristics 26 Table 7 Absolute maximum ratings 27 Table 8 DC electrical characteristic A5100 A 28 Table 9 Reflow soldering profile A5100 A 30 Table 10 Environmental conditions 34 ...

Page 8: ...customers It is housed in a 15 0 x 10 2 x 2 5 mm 22 pins SMD package with castellated edge that includes the SiRFStarV CSRG05e chipset referred to later as SS5e built in SPI Flash all RF matching elements antenna DC control RF SAW filtering various thermal and pe ripheral components and the TCXO crystal reference A very easy implementation power serial ON_OFF and antenna allows receiving position ...

Page 9: ...han A2200 A but they are drop in replaceable Supported temperature range 40 C to 85 C Single sided SMT component for reflow soldering Tape reel packaging The A5100 A receiver modules is available as off the shelf components 100 tested and shipped in standard tape and reel package 1 3 RoHS and Lead Free Information Lantronix s products marked with the lead free symbol either on the module or the pa...

Page 10: ...ber Representing Fac tory code Product Number Part Number Patch Release Hard ware Re lease Assembly Year Week Serial Number Number of dig its 27 XX XXXXXX XXXXX XX XX XXXX XXXXXX 2 6 5 2 2 4 6 Example TF A5100A 30B01 01 01 1332 000005 Meaning TF Given Given Given Given Year 13 Week 32 Incre ment from 000001 up to 999999 Example of MID TFA5100A30B0101011332000005 NOTE Hardware revision rr of the se...

Page 11: ...enna see also paragraph 3 2 Antennas 2 The calibrated clock of the receiver has not stopped thus it knows precise time to the µs level 3 The receiver has estimates of time date position and valid almanac and ephemeris data 4 The receiver has estimates of time date position and recent almanac 5 The receiver has no estimate of time date position and no recent almanac Note Performance sensitivity and...

Page 12: ...xxx A5100 A is the model name The xxxxxxx refers to the current chipset and patch if appropriate versions on the module The latest version will be provided if no version number is specified 2 2 Packing of the A5100 A The A5100 A GPS GLONASS module comes in a tape and reel package suitable for pick and place machines Figure 2 A5100 A tape specifications 1 ...

Page 13: ...tions 2 Figure 4 A5100 A tape specifications 3 One complete reel holds 1300 PCS A5100 A modules There are 1 kinds of packaging for shipment One box holds 1 reel Reel diameter 33 cm Inner box dimensions 36 W x 36 L x 4 5 H cm Box dimensions 38 8 W x 38 8 L x 5 7 H cm Gross weight 2 58 Kg Net weight 0 78 Kg ...

Page 14: ...dditional Equipment EVA5100 A Evaluation Kit including one module A5100 A Table 3 Additional equipment A detailed description of the EVA5100 A Evaluation Kit can be found in the appropri ate manual The evaluation boards are always shipped with latest ROM version and patch loaded ...

Page 15: ...nnected to output of a microprocessor For a wake up including the initial one after power on a LOW HIGH transmission is mandatory 3 1 Minimum Configuration Figure 5 shows the minimum configuration for NMEA outputs and commands sent via an RS232 interface based on the GPS GLONASS module A5100 A using a pas sive antenna It s recommended to supply Vcc continuously for normal operation the module can ...

Page 16: ...ing Vcc it is highly recommended to put A5100 A into hibernation mode either by ON_OFF pin or soft ware command Otherwise high current drain will die out the backup battery in a short period of time Figure 6 Minimum configuration A5100 A with VBak Remarks External antenna input impedance is 50 Match as close as possible A battery back up circuit for the RTC Real Time Clock should be consid ered se...

Page 17: ...vity of the GPS GLONASS system Losses through a bad antenna long cables or tracks or a bad antenna position can t be compensated afterwards 3 2 1 Passive Antennas The A5100 A supports passive antennas via an integrated LNA directly 3 2 2 Active Antennas The A5100 A also supports active antennas directly i e by offering an antenna volt age feed pin VANT pin 9 It is recommended to use an active ante...

Page 18: ... after a reset the receiver re sumes using the saved parameters Table 4 contains the input values for the following example Switch to Serial Port Band rate at 4800 Example PSRF100 1 4800 8 1 0 0E CR LF Name Example Description MID PSRF100 PSRF100 Protocol header Protocol 1 0 SiRF binary 1 NMEA Baud 4800 1200 2400 4800 9600 19200 38400 57600 or 115200 DataBits 8 8 only StopBits 1 1 only Parity 0 0 ...

Page 19: ... pulse requires The following picture shows the recommended connection for self start configuration with UART host port enabled Figure 8 Self start configuration A5100 A Remarks For self start mode full power operation will be activated once Vcc applied No power save mode PTF MPM TP will be supported If customer acci dentally configuring A5100 A into hibernation mode Vcc has to be discon nected an...

Page 20: ... the RTC Real Time Clock should be consid ered see chapter Error Reference source not found Error Reference source not found For self start mode full power operation will be activated once Vcc applied No power save mode PTF MPM TP will be supported Customer can toggle the ON_OFF pin so as to put the module into hibernation and then re move the Vcc A5100 A will be self started again in full power m...

Page 21: ...GPS GLONASS Receiver Module A5100 A User Guide 21 4 Mechanical Outline 4 1 Details Component Side A5100 A All dimensions in mm inch Figure 10 Mechanical outline component side A5100 A ...

Page 22: ...PS GLONASS Receiver Module A5100 A User Guide 22 4 2 Details Solder Side A5100 A Solder pad size outer pads 1 0 x 0 8 Solder pad size inner pads 1 2 x 1 2 All dimensions in mm Figure 11 Mechanical outline solder side A5100 A ...

Page 23: ...NASS Receiver Module A5100 A User Guide 23 5 Pin out Information 5 1 Layout A5100 A Pin 1 marker Figure 12 Pin out information bottom view A5100 A Center Ground pins are for shock vibration resistance purpose ...

Page 24: ...nd power supply 8 GND Power Supply Ground power supply 9 VANT Antenna Supply Voltage Input Power supply input for external active antenna provide ac cording voltage up to 5 0 VDC switched internally 10 ANT_GND RF GND Antenna Ground 11 ANT_IN Antenna Input Antenna signal Z 50 Ohm antenna input must not exceed 30dB gain including cable loss 12 N C None Leave open 13 N C None Leave open 14 TM_GPIO5 O...

Page 25: ...5 Pin out Information GPS GLONASS Receiver Module A5100 A User Guide 25 22 nRST Input Reset input active low Table 5 Pin description A5100 A ...

Page 26: ...ode Tracking Average Current 3 31mA TricklePower Mode 27mA Push to Fix Mode 600uA Micro Power Mode SiRFaware TM 300uA Hibernate Status 60uA Table 6 A5100 A electrical characteristics 1 Peak searching current is characterized by millisecond bursts above average searching current 2 Average searching current is typically only the first two seconds of TTFF 3 Tracking current typically includes trackin...

Page 27: ...Tst Storage temperature 40 85 C Vant Antenna supply voltage 0 5 5 V Iant Antenna supply current 0 50 mA Table 7 Absolute maximum ratings Stresses beyond those listed under Absolute Maximum Ratings may cause perma nent damage to the device This is a stress rating only Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this speci...

Page 28: ...00 A User Guide 28 6 3 DC Electrical Characteristics Symbol Parameter Min Max Unit TX0 WAKEUP Voh 4mA 2 6 Vcc V Vol 4mA 0 45 V RX0 Vih 2 0 Vcc V Vil 0 8 V nRST for safe reset 0 2 V ON_OFF Vih 1 35 Vcc V Vil 0 3 0 45 V Table 8 DC electrical characteristic A5100 A ...

Page 29: ...mended to use chemical tin as the counter part to the module s pins This will guar antee highest resistance against shocks 7 1 Proposed Footprint for Soldering Following soldering footprint parameters are recommended Copper and solder paste footprint are identical Pad shape size inner pads 1 2 mm x 1 2 mm Pad shape size outer pads 1 5 mm x 0 8 mm Stencil thickness of 120 150 µm Figure 13 Recommend...

Page 30: ... from min to max preheat temperature 60 120 seconds Temperature maintained above 217 C 60 150 seconds Time within 5 C of actual peak temperature 30 seconds Ramp down rate 6 C second max Time 25 C to peak temperature 8 minutes max Table 9 Reflow soldering profile A5100 A The solder pads hold solder of a thickness of about 150 µm for improved solder pro cess results As results of soldering may vary ...

Page 31: ...ound ANT_GND should be routed to the ground plane of the PCB the ground plane is on a lower PCB layer by vias as demonstrated in the drawing Figure 14 Antenna connector strip line A5100 A In order to achieve the impedance of 50 the width of the strip line needs to be calculated It depends on the thickness or height of the PCB layer both parameters are shown in following drawing For the calculation...

Page 32: ...S GLONASS Antennas GPS GLONASS Receiver Module A5100 A User Guide 32 In this case the width should be about 1 8 times the height of the PCB W 1 8 x H In the example one would get a width of W 1 8 x 0 8 mm 1 44 mm ...

Page 33: ... GPS GLONASS active antenna specification Limitations Supply voltage voltage fed into VANT pin 5V max Supply current 50mA max Recommendations Gain 15dB should not exceed 30 dB including cable loss Noise figure 1 5dB The recommendations apply to the majority of active antennas that can be found in the market Anyhow the quality of the GPS GLONASS antenna chosen is of para mount importance for the ov...

Page 34: ...ditioned accord ing to EIA JEDEC standard JESD22 A113 B Level 3 Basic qualification tests MSL Classification according to J STD 020C MSL3 245 C MSL Rework Compatibility according to J STD 020C Temperature Cycling 40 C 85 C Temperature Humidity Bias 70 C 85 RH Low High Temperature Operating 40 C 85 C High Temperature Operating Life 85 C Vibration Variable Frequency Mechanical Shock Please contact L...

Page 35: ...urrent Ephemeris using either data collected from satellites in view or Extended Ephemeris methods The SiRFawareTM mode is entered using the One Socket Protocol an extension of the SiRF Binary Protocol Please refer to the appropriate manual In order to request a fix and to exit SiRFawareTM it is necessary to toggle the ON_OFF pin Toggling is done by pulling the signal to HIGH for about 200ms 10 4 ...

Page 36: ...100 A User Guide 36 a short delay the module will switch into hibernate mode The RTC will keep on run ning and SRAM is backed with the typical current of 20 μA drawn from Vcc To wake the module up again toggling the ON_OFF pin is necessary 200ms pulse width ...

Page 37: ...s providing a back up power sup ply by using a separate battery or a Super cap While the Super cap is charged through the module during normal operation the battery primary cell is decoupled thru a diode Figure 16 Strip line parameters A5100 A An alternative to this solution is to switch the supply voltage from the Vcc pin to the Vbak pin Care needs to be taken that there is no voltage outage duri...

Page 38: ...ceiver and are then loaded into the receiver These data can be valid for up to seven days The second version is the internal extrapolation of available natural Ephemeris data This is done automatically and no external support is required The internally calcu lated EE data are valid for up to 3 days The receiver firmware will define which set of EE data to use or will neglect those in case natural ...

Page 39: ...ow when Iant 16mA 10 8 1 Antenna Sensor The following circuit is a proposal on how you can feed an antenna with 3 3V and provide an output for the ANTSTAT pin The value of the components may need an adaptation in the final application For example the input current of the chosen com parator goes into that equation The thresholds defined in this circuit are quite close to the ones described above Th...

Page 40: ...ments and notes as above apply We strongly recommend simulating and testing the GPS GLONASS receiver integrated in your product design before implementing the finalized product in the appropriate mar ket application In any case it is the responsibility of the designer to test and verify the implementation Figure 18 Application note Antenna sensor adaptation with current limiter Current Limiter ...

Page 41: ...tage for an active GPS GLONASS antenna on the ANT input has to be fed into the Vant pin The easiest way to do that is to connect Vcc to VANT The maximum current is 50 mA Note Shortcut between ANT and GND may damage the A5100 A GPS GLONASS receiver module This should be avoided by using an antenna current limiter The circuit chapter 0 ...

Page 42: ...PS GLONASS re ceiver Under good signal conditions the 1PPS signal comes between 620ns and 710ns after the full GPS GLONASS system second which is accurately around 10ns synchro nized to UTC Therefore the 1 second clock can be derived and maintained within around 90ns under good signal conditions Note The 1PPS clock accuracy directly depends on the position accuracy The GPS GLONASS signals travel a...

Page 43: ...ion and improves accuracy on sport related applica tions 1Hz is the default Navigation Update Rate If the user want to change to 5Hz Navigation Update Rate Please refer to command below Enable 5Hz Navigation Update Rate command NMEA command MID103 PSRF103 00 6 00 0 23 OSP command MID136 A0 A2 00 0E 88 00 00 04 04 00 00 00 00 00 00 00 0F 02 00 A1 B0 B3 Disable 5Hz and return to 1Hz Navigation Updat...

Page 44: ... PC The USB interface is an extension of the serial port 0 therefore sending NMEA sentences or binary information and accepting commands At the same time it provides power to the mod ule Accompanied by both an active and passive antenna it offers a ready to go set For the development of new software and applications the Evaluation Kit also provides NMEA and binary messages on CMOS level via a term...

Page 45: ... User Guide 45 12 Related Information 12 1 Related Documents GPS Evaluation Kit EVA5100 A Lantronix SSV NMEA Reference Guide SiRF One Socket Protocol Interface Control Document SiRF 12 2 Related Tools GPS Cockpit Lantronix SiRFLive SiRF ...

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