A2200-A Manual
Contents
1. GPS receiver 9 Quality and Reliability 9 1 Environmental Conditions Operating temperature 40 85 C Operating humidity Max 85 r H non condensing at 85 C MSL JEDEC Moisture Sensitivity Level 3 Storage 6 months in original package Table 10 Environmental conditions 9 2 Product Qualification Prior to product qualification the GPS receiver is preconditioned according 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 8596 RH Low High Temperature Operating 40 C 85 C High Temperature Operating Life 85 C Vibration Variable Frequency Mechanical Shock Please contact Maestro for detailed information 9 3 Production Test Each module is electrically tested prior to packing and shipping to ensure state of the art GPS receiver performance and accuracy V1 5 Oct 13 User s Manual Page 30 of 39 maestro GPS receiver 10 Applications and Hints 10 1 Initial Module Start After initially applying power to the module it is necessary to start the internal firm ware by toggling the ON_OFF pin Toggling is done by pulling the signal to HIGH for about 200ms This first toggling can be done after a LOW HIGH transmission is detected at the WAKEUP pin or by simply waiting f2. W 1 8xH In the example one would get a width of W 1 8 x 0 8 mm 1 44 mm V1 5 Oct 13 User s Manual Page 28 of 39 maestro 3 GPS receiver 8 2 Antenna Connections 8 2 1 Passive Antennas A passive antenna connected to ANT IN input pin 11 should be placed as close as possible to the GPS receiver The signal power lost by the antenna cable or lost by the strip line on the PCB can not be recovered by the LNA Low Noise Amplifier integrated in the GPS receiver A suitable Ground Plane design should be considered depending on the antenna type connected to ANT IN input pin 11 8 2 2 Active Antennas General GPS active antenna specification Limitations e Supply voltage voltage fed into VANT pin 5V max e Supply current 50mA max Recommendations e Gain 2 15dB should not exceed 30 dB including cable loss e Noise figure lt 1 5dB The recommendations apply to the majority of active antennas that can be found in the market Anyhow the quality of the GPS antenna chosen is of paramount im portance for the overall sensitivity of the GPS system The system design needs to reflect the supply voltage of the antenna If the supply voltage is equal to Vcc Vcc can be connected to VANT If the antenna requires a different supply voltage the antenna bias can be provided through the VANT pin VANT is switched by the module so current is only drawn when required V1 5 Oct 13 User s Manual Page 29 of 39 maestro
3. on board the values above should be considered as a starting point for further optimi zation V1 5 Oct 13 User s Manual Page 26 of 39 maestro GPS receiver 8 Use of GPS Antennas 8 1 Connecting a GPS antenna to the GPS receiver The ANT pin is used to connect a GPS antenna to the receiver The design of the antenna connection has to be done strictly according to RF design rules A 50 Q PCB strip line is required The following drawings shall explain the guidelines A major rule is to keep the strip line as short as possible Additionally antenna ground 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 Top view Motherboard Bottom Layer Motherboard Top Layer EE A 1 ANT GND ANT INT ANT GND ANT INT _ Vias to Top Layer vs to GND Layer GPS receiver solder pads Figure 12 Antenna connector strip line A2200 A In order to achieve the impedance of 50 Q 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 it is assumed that the PCB material is FR4 W m 509 strip line GPS Module Motherboard AntGND Figure 13 Strip line parameters A2200 A V1 5 Oct 13 User s Manual Page 27 of 39 maestro GPS receiver In this case the width should be about 1 8 times the height of the PCB
4. 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 data are available need add an external EEPROM part Both ver sions of EE data will help to further lower power consumption in SiRFaware mode V1 5 Oct 13 User s Manual Page 32 of 39 maestro GPS receiver 10 7 Antenna Status Adaptation This chapter shall give assistance in designing a circuit for detecting if an active antenna is connected to the module The information about the antenna status can be derived from the ANTSTAT signal generated by this circuit The examples use values for components that roughly result in the following ANTSTAT output e Logic low when lant lt 9mA e Logic high when 9mA gt lant lt 16mA e Logic low when lant 16mA 10 7 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 comparator goes into that equation The thresholds defined in this circuit are quite close to the ones described abo
5. x 38 8 L x 5 7 H cm Gross weight 2 58 Kg Net weight 0 78 Kg B One box holds 3 reels Reel diameter 33 cm V1 5 Oct 13 User s Manual Page 11 of 39 maestro GPS receiver Inner box dimensions 36 W x 36 L x 4 5 H cm Outer box dimensions 38 W x 38 L x 16 H cm Gross weight 4 92 Kg Net weight 2 34 Kg V1 5 Oct 13 User s Manual Page 12 of 39 maestro GPS receiver 2 3 Additional Equipment EVA2200 A Evaluation Kit including one module A2200 A Table 3 Additional equipment A detailed description of the EVA2200 A Evaluation Kit can be found in the appro priate manual V1 5 Oct 13 User s Manual Page 13 of 39 maestro GPS receiver 3 Quick Start In order to allow an easy and quick start with the A2200 A module this chapter pro vides a short overview on the important steps to be taken to receive NMEA mes sages with position information on a serial port UART NOTE 1 The A2200 A needs an external pull up resistor to be configured for UART operation Please consider the pull up resistor in your design or pull the GPIO up right after reset by other means NOTE 2 The ON OFF input of the A2200 A needs to be connected 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 The following picture shows the minimum configuration for NMEA or binary outputs received an
6. Configure the baud rate Baud rate and protocol selection can be set upon start up through GPIO configuration A2200 A can be configured to output NMEA at standard baud rates if the A2200 A is using the UART host interface maestro GPS receiver Table 4 lists the settings for GPIO 0 and GPIO 1 to configure the baud rate at start up After start up the GPIOs can be used for other purposes GPIO 0 I2C DIO GPIO 1 I2C_CLK Protocol Baud Rate Pull high Pull high NMEA 4800 Pull high Pull low NMEA 9600 Pull low Pull high NMEA 38400 Pull low Pull low OSP 115200 Remark Pull high low 2 2K Table 4 GPIO 0 and GPIO 1 Settings Note This feature is not available if any MEMS or non volatile memory devices are attached to the auxiliary serial bus The internal software default baud rate is NMEA 4800 when an EEPROM is connected V1 5 Oct 13 User s Manual Page 17 of 39 maestro GPS receiver 4 Mechanical Outline 4 1 Details Component Side A2200 A IW 10 20C0 40in 0 55in d 14 00 All dimensions in mm inch Figure 8 Mechanical outline component side A2200 A V1 5 Oct 13 User s Manual Page 18 of 39 maestro GPS receiver 4 2 Details Solder Side A2200 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 9 Mechanical outline solder side A2200 A V1 5 Oct 13 User s
7. GS 1126 The label is placed on the shield of the module The data matrix code holds the product type part number software release hardware release factory code year amp week of assembly and a 6 digit serial number Representing Factory Product Part Software Hardware Assembly Serial code Number Number Release Release Year Week Number Number of XX XXXXXXX XXXX XX XX XXXX XXXXXX digits 2 6 4 2 2 4 6 25 Example GS A2200A 9322 01 01 1126 000005 Meaning GSL Given Given Given Given Year 11 Increment Week 26 from 000001 up to 999999 Example of MID GSA2200A932201011126000005 V1 5 Oct 13 User s Manual Page 8 of 39 maestro GPS receiver 1 5 Characteristics The module are characterized by the following parameters 1 5 1 GPS Characteristics Channels 48 parallel tracking Correlators Doo 400 000 Frequency PLA 1 575 MHz Tracking Sensitivity O 72163 dBm Horizontal Position Accurac lt 2 5 m CEP SA off Time To First Fix TTFF 0 15 theoretical minimum values 1s values in real world may differ 85s Cold 35s Table 1 A2200 A GPS characteristics 1 Typical with good antenna see also paragraph 3 2 Antennas 2 The calibrated clock of the receiver has not stopped thus it knows precise time to the us level 3 The receiver has estimates of time date position and valid almanac and ephemeris data 4 The rec
8. High ON operational mode Connect it to ON OFF pin for self start mode 20 Vcc Power Supply 3 0 3 6 VDC power supply V1 5 Oct 13 User s Manual Page 21 of 39 maestro GPS receiver 21 NC None Leave open 22 nRST Input Reset input active low Table 5 Pin description A2200 A V1 5 Oct 13 User s Manual Page 22 of 39 6 Electrical Characteristics 6 1 Operating Conditions maestro GPS receiver N g Pin Description Min Typical Max 3 Vcc 3 0V 3 3V 3 6V Full power mode Searching Peak Current 1 69mA Full power mode Searching Average Current 2 52 mA Full power mode Tracking Average Current 3 41 mA TricklePower Mode 12 7 mA Push to Fix Mode 325 uA Micro Power Mode SiRFawareTM 35 uA Hibernate Status 25 uA Table 6 A2200 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 tracking and the post searching portion of TTFF 6 2 Absolute Maximum Ratings Symbol Parameter Min Max Unit Vcc A2200 A Power supply 0 3 43 6 V Vin Voltage to I O pins 0 3 43 6 V lov Input current on I O pins 10 10 mA Itdv Absolute sum of all input currents during overload condition 200 mA Tst Storage tempe
9. Manual Page 19 of 39 5 Pin out Information 5 1 Layout A2200 A maestro S GPS receiver nRST pa O lc GP NC m S Vout Vcc3 3V 20 3C TX0 WAKEUP EP E od S Ir Run GPIO7 7 BC Extint2 GPIO8 cos 57 Lo GN GN Ei mom DC DIO 16 A EL E C GND bc ck 53 Di EN BN 8C GND TM GPIO5 14 96 VANT Extlnt m 10C ANT_GND GPIO3 2 ILC ANT IN O Pin 1 marker Figure 10 Pin out information bottom view A2200 A Center Ground pins are for shock vibration resistance purpose V1 5 Oct 13 User s Manual Page 20 of 39 maestro GPS receiver A 5 2 Description A2200 A Signals Pin Symbol Function Description 1 GPIO2 Input Output Leave open 2 Vout Voltage output Permanent 1 8V voltage output for up to 20mA current max 3 TXO Output Serial output 0 NMEA out if configured for UART SPI DO SPI data out pin when module works in SPI mode 4 RXO Input Serial input 0 NMEA in if configured for UART SPI DI SPI data in pin when module works in SPI mode 5 Extlnt Input Interrupt input 2 If ExtInt 2 is not going to be used it is rec 2 GPIO8 ommended that this pin be tied directly to ground Otherwise a 100K pull down resistor to ground should be connected to the Extlnt 2 pin 6 ON OFF Input Connect to push pull output This is mandatory Set to LOW by default Toggle to HIGH and back to LOW for fi
10. N 36 11 Evaluation Kit EVA2200 A opas eege 37 12 Related Information c cccssccessseseseeeesseeeceseeeeeseeeeaseeeaseennseeeeeeseneeeseneees 38 A ia delle OT 38 122 Related Doc Tre S o Enc cx Re Eu ERE Rc CHER S cr nec nido eene neo rev 38 12 3 R lat d HOGS EEN 38 13 List OF Eu 39 14 List of Tables EE 39 V1 5 Oct 13 User s Manual Page 5 of 39 maestro 3 GPS receiver 1 Introduction The GPS module A2200 A is Maestro s first implementation of CSR s SiRFstarlV ROM chip on GPS module This is highly integrated GPS receivers that can be used as SMT components A very easy implementation power serial ON OFF and antenna allows receiving position velocity and time information The A2200 A is a module designed for a 3 3V environment 1 1 Feature Overview The A2200 A is new module with the following outstanding features e Fast responsive location experience o High sensitive navigation engine with tracking down to 163dBm o 48track verification channels o SBAS WAAS EGNOS MSAS GAGAN e Breakthrough micro power technology o Requires only 50 500p 4A to maintain hot start capability e Active jammer remover o Removes in band jammers up to 80dB Hz o Tracks up to eight CW continuous wave jammers V1 5 Oct 13 User s Manual Page 6 of 39 maestro GPS receiver 1 2 Characteristics Overview The module s most important characteristics are
11. Push to Fix mode is designed for the application that requires infrequent position reporting The receiver generally stays in a low power mode up to 2 hours but wakes up periodically to refresh position time ephemeris data and RTC calibration The push to fix mode is initialized and entered using the SiRF Binary Protocol Please refer to the appropriate manual paying particular attention to the paragraph titled Set TricklePower Parameters In order to request a fix outside the specified V1 5 Oct 13 User s Manual Page 31 of 39 maestro GPS receiver duty cycles it is necessary to toggle the ON OFF pin Toggling is done by pulling the signal to HIGH for about 200ms 10 5 Hibernate Mode In order to enter Hibernate Mode it is necessary to send a shutdown command or to toggle to ON_OFF pin by pulling the signal to HIGH for about 200ms Starting with firmware version 4 0 1 the according command is supported in NMEA and SiRF Binary mode After a short delay the module will switch into hibernate mode The RTC will keep on running and SRAM is backed with the typical current of 20 pA drawn from Vcc To wake the module up again toggling the ON_OFF pin is neces sary 200ms pulse width 10 6 Extended Ephemeris The receiver is capable of supporting two versions of using Extended Ephemeris EE data The first one is the version where the EE data are calculated on a server are transmitted to device incorporating the receiver and are
12. R ANY INACCURACIES OR THE CONSEQUENCES THEREOF NOR FOR ANY LIABILITY ARISING FROM THE USE OR APPLICATION OF ANY CIRCUIT PRODUCT OR EXAMPLE SHOWN IN THE DOCUMENT THE PRODUCT HARD AND SOFTWARE DESCRIBED IN THIS DOCUMENTATION IS NOT AUTHORIZED FOR USE IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF MAESTRO THIS DOCUMENT MAY PROVIDE LINKS TO OTHER WORLD WIDE WEB SITES OR RESOURCES BECAUSE MAESTRO HAS NO CONTROL OVER SUCH SITES AND RESOURCES MAESTRO SHALL NOT BE RESPONSIBLE FOR THE AVAILABILITY OF SUCH EXTERNAL SITES OR RESOURCES AND DOES NOT ENDORSE AND IS NOT RESPONSIBLE OR LIABLE FOR ANY CONTENT ADVERTISING PRODUCTS OR OTHER MATERIALS ON OR AVAILABLE FROM SUCH SITES OR RESOURCES MAESTRO SHALL NOT BE RESPONSIBLE OR LIABLE DIRECTLY OR INDIRECTLY FOR ANY DAMAGE OR LOSS CAUSED OR ALLEGED TO BE CAUSED BY OR IN CONNECTION WITH USE OF OR RELIANCE ON ANY SUCH CONTENT GOODS OR SERVICES AVAILABLE ON OR THROUGH ANY SUCH SITE OR RESOURCE MAESTRO RESERVES THE RIGHT TO CHANGE MODIFY OR IMPROVE THIS DOCUMENT OR THE PRODUCT DESCRIBED HEREIN AS SEEN FIT BY MAESTRO WITHOUT FURTHER NOTICE V1 5 Oct 13 User s Manual Page 3 of 39 maestro GPS receiver Table of Contents 1 MERE OCC e EE 6 11 Feat re e 6 1 2 Characteristics OVERVIEW cesnisesdndscssndecnansseactessasnestasnsnnbenesestacaendaubinseesiatacatacarsunce 7 1 3 RoHS and Lead Free Information cccccccessseceecceeeeeeeeceeeeeeese
13. 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 cur rent is 50 mA Note Shortcut between ANT and GND may damage the A2200 A GPS receiver module This should be avoided by using an antenna current limiter The circuit chapter 10 7 2 Antenna Sensor with Current Limiter works for Vcc from 3V to 5V The antenna current will be limited to 50 mA approximately If other transistors are used other resistor values may be necessary as well We strongly recommend simulating and testing your realized version before using it 10 9 TM_GPIO5 pin 1 pulse per second pin The 1PPS pin is an output pin In addition to precise positioning GPS also allows for accurate timing due to the synchronized atomic clocks in the GPS satellites While the current date and time is transmitted in NMEA sentences UTC an exact and accurate timing signal is pro vided via the 1PPS pin of the A2200 GPS receiver Under good signal conditions the 1PPS signal comes between 620ns and 710ns after the full GPS system second which is accurately around 10ns synchronized 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 signals travel at the speed of light therefore a position inaccuracy directly translates into 1PPS inaccuracies 10m position d
14. ct 13 User s Manual Page 36 of 39 maestro GPS receiver 11 Evaluation Kit EVA2200 A For demonstration and easy evaluation of GPS performance Maestro offers an evaluation kit including one GPS A2200 A module It contains a USB interface with according drivers to connect easily to a 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 module 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 terminal plug F GPS Receiver A2200 8 e we Maestro Wireless Solutions Limited www maestro wireless com w GPS Receiver A220 Evalution Bocgd an e w ns m Frisverer Figure 17 Evaluation kit EVA2200 A For further information please contact Maestro V1 5 Oct 13 User s Manual Page 37 of 39 maestro GPS receiver 12 Related Information 12 1 Contact This manual is created with due diligence We hope that it will be helpful to the user to get the most out of the GPS module Inputs regarding errors or mistaken verbalizations and comments or proposals to Maestro Hongkong for further improvements are highly appreciated Maestro Wireless Solutions Limited Address Unit 3603 09 36 F 118 Connaught Road West HK Ma
15. d commands sent via an RS232 interface based on the GPS module A2200 A using a passive antenna Vcc 3 3V WAKEUP GPIO7 GPIO6 z I2C DIO DC CLK 10 VANT TM GPIO5 ANT GND Extint ANT_IN GPIO3 Figure 5 Minimum configuration A2200 A NOTE It is recommended to supply Vcc continuously Use SiRFaware or other low power modes to reduce power consumption of the module while no position information is required V1 5 Oct 13 User s Manual Page 14 of 39 maestro GPS receiver RS232 Out DB9 female Figure 6 RS232 level shifter Remarks e Place C1 to C5 here 0 1uF close to MAX3232 For capacity values see datasheet of actual component used e Use 3 3V level shifter MAX3232 or equivalent e External antenna input impedance is 50 Q Match as close as possible 3 2 Antennas Generally the quality of the GPS antenna chosen passive or active is of paramount importance for the overall sensitivity of the GPS system Losses through a bad an tenna long cables or tracks or a bad antenna position can t be compensated after wards 3 2 1 Passive Antennas The A2200 A supports passive antennas via an integrated LNA directly 3 2 2 Active Antennas The A2200 A also supports active antennas directly i e by offering an antenna voltage feed pin VANT pin 9 It is recommended to use an active antenna with a supply voltage of 3 to 5 VDC and a maximum current draw of 50 mA The antenna should have a gain 2 15dB b
16. e A2200 A o Operable at 3 3V 41mA 1 fix per second o UART interface at 3 3V CMOS level o SPISIave support at 3 3V CMOS level Direct passive antenna support Switched antenna voltage for active antenna support Small form factor of 10 2 mm x 14 mm 0 40 x 0 55 Supported temperature range 40 C to 85 C Single sided SMT component for reflow soldering Tape amp reel packaging The A2200 A receiver module is available as off the shelf components 100 tested and shipped in standard tape and reel package 1 3 RoHS and Lead Free Information Maestro s products marked with the lead free symbol either on the module or the packaging comply with the Directive 2002 95 EC of the European Parliament and the Council on the Restriction of Use of certain Hazardous Substances in Electrical and Electronic Equipment RoHS RoHS 2002 95 EC All Maestro GPS receiver modules smart GPS antenna modules and telematics units are RoHS compliant V1 5 Oct 13 User s Manual Page 7 of 39 1 4 Label The A2200 A labels hold the following information Maestro tt rr General description YYWW XXXXXX GS 1126 Software ssss part number tt software release Hardware rr hardware release A2200 Assss Factory and date code GS Factory code yy assembly year ww assembly week xxxxxx serial number pin 1 mark Figure 1 A2200 A label maestro N GPS receiver Example Maestro A2200 A9322 01 01 1126 000005
17. eiver 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 TTFF might slightly decrease below 30 C 1 5 2 Mechanical Characteristics A2200 A Mechanical Length 14x0 20 mm 0 55 0 008 dimensions Width 10 2 0 20 mm 0 40 0 008 Height 2 5 mm 0 1 Max A2200 A Weight 0 6 g 0 022 oz Table 2 A2200 A dimensions and weight 1 6 Handling Precautions The GPS receiver module A2200 A is sensitive to electrostatic discharge ESD Please handle with appropriate care V1 5 Oct 13 User s Manual Page 9 of 39 maestro GPS receiver 2 Ordering Information 2 1 GPS Receivers A2200 A The order number is built as follows e A2200 Axxxx A2200 A is the model name The xxxx refers to the current part number on the module 2 2 Packing of the A2200 A The A2200 A GPS module come in a tape and reel package suitable for pick and place machines 4 10 X02 Figure 2 A2200 A tape specifications 1 V1 5 Oct 13 User s Manual Page 10 of 39 maestro GPS receiver SECTION A A Figure 3 A2200 A tape specifications 2 Figure 4 A2200 A tape specifications 3 One complete reel holds 1300 pcs A2200 A modules There are 2 kinds of packaging for shipment A 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
18. ensions and weight 9 Table 3 Additional SQUIDMEN E 13 Table 4 GPIO 0 and GPIO 1 Settings EE 17 Table 5 lat eer s sire coe cetceieies th ote ctt eipece cts eit eee ei eh ieee chen 22 Table 6 A2200 A electrical characteristics cceeeeeeeeeeeeeeeeeeeeeeeeeeeneeeeeeeeeeeeeeeee 23 Table 7 Absolute maximum ratings EE 23 Table 8 DC electrical characteristic A2200 A 24 Table 9 Reflow soldering profile AZ200 A en 26 Table 10 Environmental conditions ieuiiinuc oriretur ront ce tame tette Sene rne bebe ceni zeeg 30 V1 5 Oct 13 User s Manual Page 39 of 39
19. eseeeeeeenseeeeees 7 TALABERA T 8 TEE Te 9 1 5 1 GPS Charachertetlce a 9 1 5 2 Mechanical Characteristics cccccccccecccceeeeeceeeesesceeeeeeeeeeeeeeseeeeeaeeeeseeaeaeeeseaeaeeeeees 9 1 6 Handling Precautions ENEE 9 2 Ordering Informalloh E 10 2 1 GPS Receivers A2200 A eneen ee e a aia i 10 2 2 Packing of the A2200 A kee 10 cess episc icici id ca dnreecretidasc ed tale uetOenudneatnnnnes 13 S QUICK SEAEE s ob sctwontusninencwansdadewansdeddusnsdadimanteeoiwanstieiannsdidemsnsueaiesmiaedauansaadeuanians 14 3 1 Minimum Configuration EE 14 3 2 WE TEE 15 3 2 1 Passive Antennas cute ite dee e Ex veste ve eve n ex eee se egene e EO 15 3 2 2 Active Antennas coiere edd EE 15 3 3 Serial Port Settings RE o o T 16 3 4 Improved TTFF 16 3 5 Self start Configuration EEN 16 3 6 Configure the baud rate e 17 4 Mechanical Outline eese eeeeee eene e enne nnn nn nnn nhan nan n hannah 18 4 1 Details Component Side A2 200 A 18 4 2 Details Solder Side A2200 A nennen 19 5 Pin out Information uus ccce aun vadurkauv a knP Ege b ga VE Ovv aw EK RENE DEF NEM XS FEVER div VERI N 20 5 1 Layout AZ ZOO Pa EE 20 5 2 Description A2200 A Signals E 21 6 Electrical Characteristics e eese eeeeee eene nnne nenne nana nnns 23 6 1 Operating ere Tun ul TE 23 6 2 Absolute Maximum Ratings oii sicot pedem ae peu esca EES NEESS 23 6 3 DC Electrical CharsactellslieBi escono Gr taa ch ot oa oc
20. eviation 33ns 1PPS deviation typically 100m position deviation 333ns 1PPS deviation typically The NMEA messages containing absolute timing information UTC time are pro vided around 300ms after the 1PPS signal typically This may change with the GPS receiver setup The 1PPS signal is provided on a as is basis with no accuracy specification It s NOT recommended to use 1PPS signal for accurate timing application The given values are based on a 10 satellite static GPS simulator scenario V1 5 Oct 13 User s Manual Page 35 of 39 maestro GPS receiver Tek PL Stop M Pos 60 00ms e LE a L Jenene CH1 200mVv M 500ms CH1 7 Figure 16 1PPS waveform reference 10 10 5 Hz Navigation Update Rate User can select 1Hz or 5Hz output rate of navigation computation and message it supports rapid change of direction 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 e OSP command MID136 A0 A2 00 OE 88 00 00 04 04 00 00 00 00 00 00 00 OF 02 00 A1 BO B3 Disable 5Hz and return to 1Hz Navigation Update Rate command NMEA command MID103 PSRF103 00 7 00 0 22 e OSP command MID136 A0 A2 00 OE 88 00 00 04 00 00 00 00 00 00 00 00 OF 02 00 9D BO B3 V1 5 O
21. ic C e o cc as 24 T MOUNUNG aisi pn cinis NN UOCE RUIN dU MUERE RUE METODI 25 7 1 Proposed Footprint for Soldering AAA 25 7 2 Recommended Profile for Reflow Soldering sssssssessss 26 8 Use of GPS Antennas rennen su nnn ah nu unu kk R RR nun RRRRR ER ERR SERERE REN RR EREERR R RR RR RR KK 27 8 1 Connecting a GPS antenna to the GPS receiver nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnna 27 8 2 Antenna COnrnecollgIi8 qasssexet b bvad ama eege Ad IU M E DPI E I ROEDEI OUI DE RUE UENE 29 8 2 Passive Antennas css ui E Exe EAR 29 8 2 2 Active Antennas ee eene e nnn enhn nn a n ns n aa nnns na ann rns n nnns 29 V1 5 Oct 13 User s Manual Page 4 of 39 maestro GPS receiver 9 Quality and RE Ee Tu E 30 9 1 Environmental Conditions 30 9 2 eil ei ERT ET el 30 9 3 Producton RE EE 30 10 Applications and Hints qua cri aad da a eui Cw G ri ba I DE 31 10 1 Initial Module Start E 31 10 2 Proper Shutdown EE 31 10 3 SiRFaware EE 31 10 4 Push to Fix lee EE 31 10 5 Hibernate ee EEN 32 10 6 Extend d Ephe meri S sss rtt ur eren putt Ee eek tus ex t td aenieei keen 32 10 7 Antenna Status Adaptation ce ecce eere rper reete bedee 33 10 71 Antenna Sensor ocu ett ee te terio xt ooh buen iovis Doe ERU tu eC Ee BO DH US 33 10 7 2 Antenna Sensor with Current Limiter sseeeeeeee 34 10S VANT PIM eege 35 10 9 TM GPIOS pin 1 pulse per second pm 35 10 10 5 Hz Navigation Update Hate EE
22. in Line 852 28690688 Fax 852 25254701 support gps 2maestro wireless com www maestro wireless com 12 2 Related Documents GPS Evaluation Kit EVA2200 A Maestro GSD4e NMEA Manual SiRF GSD4e OSP Manual SiRF Maxim MAX809SEUR T http datasheets maxim ic com en ds MAX803 MAX81 0Z pdf 12 3 Related Tools e GPS Cockpit Maestro e SiRFLive SIRF V1 5 Oct 13 User s Manual Page 38 of 39 maestro GPS receiver 13 List of Figures Figure 1 A2200 A EE 8 Figure 2 A2200 A tape specifications 1 ENEE 10 Figure 3 A2200 A tape specifications 2 11 Figure 4 A2200 A tape specifications OO 11 Figure 5 Minimum configuration AZ200 A 14 Figure 6 RS232 level shifter AEN 15 Figure 7 Self start configuration A2200 A 16 Figure 8 Mechanical outline component side A2200 A ssssssssseenesessesrrrrrrrreeeees 18 Figure 9 Mechanical outline solder side A2200 A 19 Figure 10 Pin out information bottom view A2200 A 20 Figure 11 Recommended Solder PAD Layout 25 Figure 12 Antenna connector strip line A2200 A 27 Figure 13 Strip line parameters A2200 A EE 27 Figure 14 Application note Antenna sensor adaptation ccccceeceeeeseeeeeeeeees 33 Figure 15 Application note Antenna sensor adaptation with current limiter 34 Figure 16 1PPS waveform reierencel EE 36 Figure 17 Evaluation kit EVAZZOU A een 37 14 List of Tables Table 1 A2200 A GPS characherstces 9 Table 2 A2200 A dim
23. maestro 5 GPS receiver GPS Receivers A2200 A A Description of Maestro s GPS Receiver Module A2200 A User Manual Version 1 5 maestro GPS receiver Revision History Rev Date Description 0 1 07 11 11 First draft based on A2200 1 0 12 12 11 Updated photo Pin out Information Packing 1 1 05 24 12 1 Updated of the antenna Gain 2 link to 1PPS application note and 1PPS timing accuracy remarks added 3 Recommended Solder PAD Layout drawing added 1 2 06 01 12 Update nRST pin description 1 3 07 25 12 Add 5Hz Navigation Update Rate 1 4 04 01 13 1 Update DC interface description 2 Add self start description 1 5 10 16 13 1 Add GPIO 0 amp 1 description and section 3 6 2 Update photographs of the section 3 1 amp 3 5 mm dd yy Name Date Signature Written by Happy wen 10 16 13 HW Checked by Sam Law Matthieu 10 16 13 S L M Approval by Frank Tang Calvin Yau 10 16 13 FT CY V1 5 Oct 13 User s Manual Page 2 of 39 maestro GPS receiver Disclaimer THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF MAESTRO WIRELESS SOLUTIONS LIMITED IT MAY NOT BE COPIED OR TRANSMITTED BY ANY MEANS PASSED TO OTHERS OR STORED IN ANY RETRIEVAL SYSTEM OR MEDIA WITHOUT PRIOR CONSENT OF MAESTRO OR ITS AUTHORIZED AGENTS THE INFORMATION IN THIS DOCUMENT IS TO THE BEST OF OUR KNOWLEDGE ENTIRELY CORRECT HOWEVER MAESTRO CAN NEITHER ACCEPT LIABILITY FO
24. or 1s after power up In case of configuration for UART mode messages should be transmitted afterwards If no messages should appear a new toggling should be applied 10 2 Proper Shutdown The A2200 A module requires an orderly shutdown process to properly stop internal operation and complete any writes of critical data to BBRAM or EEPROM data area Abrupt removal or drop of main power while the system is running has risks ranging from minor impact on TTFF to fatal permanent corruption of EEPROM code area on the module A controlled and orderly shutdown while the A2200 A is running in full power mode can be initiated by e A200ms pulse on the ON_OFF pin or e According messages either in NMEA or OSP mode The shutdown is completed after maximum 1s Therefore the module should be supplied with voltage for that time after the shutdown sequence was initiated 10 3 SiRFaware Support SiRFaware is a low power operating mode that seeks to maintain low uncertainty in position time and frequency and to maintain valid current Ephemeris using either data collected from satellites in view or Extended Ephemeris methods The SiRFaware 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 SiRFaware it is necessary to toggle the ON OFF pin Toggling is done by pulling the signal to HIGH for about 200ms 10 4 Push to Fix Mode
25. rature 40 85 C Vant Antenna supply voltage 0 5 5 V lant Antenna supply current 0 50 mA Table 7 Absolute maximum ratings Stresses beyond those listed under Absolute Maximum Ratings may cause per manent 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 specification is not implied Exposure to absolute maximum rating conditions for extended periods may affect device reliability V1 5 Oct 13 User s Manual Page 23 of 39 maestro GPS receiver 6 3 DC Electrical Characteristics Symbol Parameter Min Max Unit TX0 WAKEUP Voh 4mA 2 6 Vcc V Vol 4mA 0 45 V RXO Vih 2 0 Vcc V Vil 08 V nRST for safe reset 02 V ON OFF Vih 1 35 Vcc V Vil 0 3 0 45 V Table 8 DC electrical characteristic A2200 A V1 5 Oct 13 User s Manual Page 24 of 39 d maestro GPS receiver g 7 Mounting This chapter describes the suggested mounting process for the A2200 A receiver module In a RoHS compliant product with a RoHS compliant process it is recom mended to use chemical tin as the counter part to the module s pins This will guarantee highest resistance against shocks 7 1 Proposed Footprint for Soldering Following soldering footprint parameters are recommended Copper and solder paste footprint are identical Pad
26. rst start up after power on to request a fix in SiRFaware or PTF mode to go into or wake up out of hibernate mode Connect it to WAKEUP pin for self start mode GND Power Supply Ground power supply GND Power Supply Ground power supply 9 VANT Antenna Supply Power supply input for external active antenna provide ac Voltage Input 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 GPIO3 Input Output Leave open 13 Extint Input Output Interrupt input for MEMS interface 14 TM_GPIO5 Output Time Mark 1PPS signal 15 GPIO 1 Output Configuration pin for the baud rate 2 2K to 1 8V for the DC CLK baud rate 4800 bps see also Configure the baud rate DC clock output to MEMS interface 16 GPIOO Input Output Configuration pin for the baud rate 2 2K to 1 8V for the DC DIO baud rate 4800 bps see also Configure the baud rate 12C I O to MEMS interface 17 GPIO6 Input Configuration pin to run in UART mode 10k pull up to 1 8V e g CTS to Vout pin 2 SPI CLK SPI clock pin when module works in SPI mode 18 GPIO7 Input Unused configuration pin reserved for future use leave open RTS SPI chip select pin when module works in SPI mode SPI CS 19 WAKEUP Output Status of digital section Push Pull output Low OFF KA Keep Alive only Hibernate or Standby mode
27. 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 um 1 500 10 oe d 8 LCIS LI CS HE s LJ T 1 20 0 05 C S 8 mmm Ld I CC i pi EE EH L EE EH EH E LJ pig LE SS E ES 1 e S EH EL um EE 200 200 11 20 MIN Figure 11 Recommended Solder PAD Layout V1 5 Oct 13 User s Manual Page 25 of 39 maestro GPS receiver 7 2 Recommended Profile for Reflow Soldering Typical values for reflow soldering of the module in convection or IR convection ovens are as follows according to IPC JEDEC J STD 020D Parameter Value Peak temperature ROHS compliant process 245 C Average ramp up rate to peak 217 C to Peak 3 C second max Preheat temperature min 150 C max 200 C Ramp up time 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 A2200 A The solder pads hold solder of a thickness of about 150 um for improved solder process results As results of soldering may vary among different soldering systems and types of solder and depend on additional factors like density and types of components
28. ut the total gain antenna gain minus cable loss at the antenna input of the module should not exceed 30 dB The noise figure should be lt 1 5dB V1 5 Oct 13 User s Manual Page 15 of 39 maestro 3 GPS receiver 3 3 Serial Port Settings In UART operation defined by the external pull up resistor as outlined in Minimum Configuration the default settings are e NMEA 4800 baud 8 data bits no parity 1 stop bit no flow control 3 4 Improved TTFF In order to improve the TTFF Time To First Fix it is recommended to keep Vcc supplied at all times This will allow taking advantage of sophisticated low power mode features of the SiRFstarlV ROM chip set 3 5 Self start Configuration In order to minimize the GPIO required for operating A2200 A WAKEUP pin 19 and ON OFF pin 6 can be tied together for entering the self start mode such that no ON OFF pulse requires The following picture shows the recommended connection for self start configuration with UART host port enabled VCC O pur AX809SEUR T TM_GPIO5 Extint Figure 7 Self start configuration A2200 A For self start mode full power operation will be activated once Vcc applied No power save mode PTF MPM Hibernation will be supported While using external EEPROM or SPI Flash power supervision chip Maxim MAX809SEUR T is mandatory in order to prevent any memory corruption if the Vcc removes abruptly V1 5 Oct 13 User s Manual Page 16 of 39 3 6
29. ve Their value is determined by resistors R4 R5 and R3 We strongly recommend simulating and testing the GPS receiver integrated in your product design before implementing the finalized product in the appropriate market application U1 U2 rail to rail single supply Common node on PCB comperator with open drain output open drain with pullup R2 High for 9mA lt lant lt 18mA Low for lant lt 9mA or lant gt 18mA Figure 14 Application note Antenna sensor adaptation V1 5 Oct 13 User s Manual Page 33 of 39 maestro 3 GPS receiver 10 7 2 Antenna Sensor with Current Limiter This proposal is similar to the first one but includes a current limiter Comments and notes as above apply We strongly recommend simulating and testing the GPS receiver integrated in your product design before implementing the finalized product in the appropriate market ap plication In any case it is the responsibility of the designer to test and verify the implementation Current Limiter U1 U2 rail to rail single supply comperator with open drain output Common node on PCB open drain with pullup R2 High for 9mA lt lant lt 18mA Low for lant 9mA or lant 18mA Figure 15 Application note Antenna sensor adaptation with current limiter V1 5 Oct 13 User s Manual Page 34 of 39 maestro GPS receiver 10 8 VANT Pin The VANT pin is an input pin The supply voltage for an active GPS
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