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TIM-5H

Hardware

Integration

Manual

Design-In

GPS.G5-MS5-07015-A-1

u-blox

proprietary

Page 25

your position is our focus

u-blox 5 Module

GND

RF_IN

GND

Active Antenna

V_ANT

VCC_RF

LNA

AADET0_N

Antenna

Supervisor

Circuitry

external
antenna

voltage

supply

Figure 14: External antenna power supply with full antenna supervisor

2.9.4.1

Short and Open Circuit Active Antenna Supervisor

The

Antenna

Supervisor

can

configured

serial

port

message

(using

only

UBX

binary

message).

When

enabled

the

active

antenna

supervisor

produces

serial

port

messages

(status

reporting

NMEA

and/or

UBX

binary

protocol)

which

indicates

all

changes

the

antenna

circuitry

(

disabled

antenna

supervisor,

antenna

circuitry

short

circuit,

open

circuit)

and

shuts

the

antenna

supply

down

required.

The

active

antenna

supervisor

provides

the

means

check

the

active

antenna

for

open

and

short

circuits

and

shut

the

antenna

supply

off,

short

circuit

detected.

The

following

state

diagram

applies.

antenna

connected,

the

initial

state

after

power-up

“Active

Antenna

OK”.

Super-

vision

Active

Antenna

Open

Circuit

detected

Short

Circuit

detected

Powerup

Events AADET0_N

User controlled events

Disable Supervision

Enable Supervision

Short Circuit

detected

Disable

Supervision

Antenna
connected

Short Circuit

detected

open circuit

detected, given

OCD enabled

Periodical

reconnection

attempts

opt

ional

Figure 15: State Diagram of Active Antenna Supervisor

Содержание TIM-5H

Страница 1: ...ense Indoor GPS providing best in class acquisition and tracking sensitivity precision timing and an innovative jamming resistant RF architecture The 25 4 x 25 4 mm form factor of the successful TIM 4...

Страница 2: ...makes no warranties based on the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice...

Страница 3: ...ully design in and configure these u blox 5 based GPS GALILEO receiver modules For navigating this document please note the following This manual has a modular structure It is not necessary to read it...

Страница 4: ...he nearest of the Technical Support offices by email Use our service pool email addresses rather than any personal email address of our staff This makes sure that your request is processed as soon as...

Страница 5: ...em Functions 12 2 2 1 EXTINT External Interrupt Pin 12 2 2 2 System Monitoring 12 2 3 Interfaces 12 2 3 1 Serial 12 2 4 I O Pins 13 2 4 1 RESET_N 13 2 4 2 EXTINT0 13 2 4 3 AADET_N 13 2 5 Design In 14...

Страница 6: ...32 3 3 1 Moisture Preconditioning 32 3 3 2 Soldering Paste 32 3 3 3 Reflow Soldering 33 3 3 4 Optical Inspection 34 3 3 5 Cleaning 35 3 3 6 Repeated Reflow Soldering 35 3 3 7 Wave Soldering 35 3 3 8 H...

Страница 7: ...Helix Antennas 45 B 5 Helix or Patch which selection is best 45 B 6 Antenna Matching 46 B 7 Antenna Placement 47 C Interference Issues 48 C 1 Sources of Noise 48 C 2 Eliminating Digital Noise Sources...

Страница 8: ...on With the TIM 5H the complete signal processing chain from antenna input to serial output is contained within a single component TIM 5H maintains the compact 25 4 x 25 4 mm form factor of the highly...

Страница 9: ...filter the u blox 5 RF IC and the TCXO or XTO crystal The Baseband section contains the digital circuitry comprised of the u blox 5 Baseband processor the RTC crystal and additional elements such as...

Страница 10: ...specially if low power operation modes are enabled It is important that the system power supply circuitry is able to support the peak power see datasheet for specification for a short time In order to...

Страница 11: ...architecture with built in autonomous power saving functions The receiver uses Autonomous Power Management to minimize the power consumption at any given time Furthermore the software shuts down the...

Страница 12: ...t as part of the UBX protocol class MON Please refer to the u blox 5 Protocol Specification 1 For more information on UBX messages serial interfaces for design analysis and individual system monitorin...

Страница 13: ...hat the reset circuitry can deliver enough current e g 1mA RESET_N is provided with TIM 5H to provide Reset compatibility with ANTARIS 4 versions Future TIM models may not include this pin and it is t...

Страница 14: ...he power supply within the specified range Compare the peak current consumption of TIM 5H with the specification of your power supply GPS receivers require a stable power supply avoid ripple on VCC 50...

Страница 15: ...is a minimal setup for a PVT GNSS receiver with a TIM 5H module TIM 5H Top View GND RF_IN GND V_BCKP 16 17 18 19 20 30 29 28 27 26 25 24 23 22 21 15 14 13 12 11 1 2 3 4 5 6 7 8 9 10 RxD2 TxD1 RxD1 Re...

Страница 16: ...odule Leave open if not used V_ANT 19 I Antenna Bias voltage Connect to GND or leave open if Passive Antenna is used If an active Antenna is used add a 10R resistor in front of V_ANT input for short c...

Страница 17: ...dielectric between the signal and the 1st GND layer typically the 2nd layer for the micro strip calculation If the distance between the micro strip and the adjacent GND area on the same layer does no...

Страница 18: ...solder paste at the step stencil should have a total thickness of 175 to 200 m If a step stencil is not used it is still advisable to increase the volume of solder paste outside the module to attain...

Страница 19: ...f the system PCB Care must also be exercised with placing the receiver in proximity to circuitry that can emit heat The RF part of the receiver is very sensitive to temperature and sudden changes can...

Страница 20: ...gure 8 an isolated ground area is created around and below the RF connection This part of the circuit MUST be kept as far from potential noise sources as possible Make certain that no signal lines cro...

Страница 21: ...24 25 26 27 28 29 15 14 12 11 10 9 8 7 6 5 4 3 2 1 13 30 Antenna 16 17 18 19 20 21 22 23 24 25 26 27 28 29 15 14 12 11 10 9 8 7 6 5 4 3 2 1 13 30 PCB PCB PCB Wrong better best Routing of the RF connec...

Страница 22: ...D Coplanar Waveguide Figure 10 shows an example of a 2 layer FR4 board of 1 6 mm thickness and a 35 m 1 once copper cladding The thickness of the micro strip is comprised of the cladding 35 m plus the...

Страница 23: ...ow noise amplifier They can be directly connected to RF_IN If an active antenna is connected to RF_IN the integrated low noise amplifier of the antenna needs to be supplied with the correct voltage th...

Страница 24: ...not needed This feature helps to reduce power consumption when the receiver is in Sleep Mode 2 9 3 1 Short Circuit Protection If a reasonably dimensioned series resistor R_BIAS is placed in front of p...

Страница 25: ...ges of the antenna circuitry disabled antenna supervisor antenna circuitry ok short circuit open circuit and shuts the antenna supply down if required The active antenna supervisor provides the means...

Страница 26: ...k 10 Resistor min 0 063 W R5 33 k 10 Resistor min 0 063 W T1 T2 PNP Transistor BC856B e g Philips Semiconductors 1 Table 5 Active Antenna Supervisor bill of material Firmware supports an active antenn...

Страница 27: ...a supervisor circuitry e g ANTSUPERV AC SD OD PdoS Abbreviation Description AC Antenna Control e g the antenna will be switched on off controlled by the GPS receiver SD Short Circuit Detection Enabled...

Страница 28: ...TIM 5H modules are delivered as hermetically sealed reeled tapes in order to enable efficient production production lot set up and tear down Figure 17 Reeled u blox 5 Modules 3 1 1 Reels TIM 5H module...

Страница 29: ...ped in Tape and Reel These components contain highly sensitive electronic circuitry Handling the TIM 5H without proper ESD protection may destroy or damage them permanently According to JEDEC ISP the...

Страница 30: ...ctions 3 2 3 Storage Shelf life in sealed bag is 12 months at 40 C and 90 relative humidity 3 2 4 Handling A humidity indicator card and a desiccant bag to absorb humidity are enclosed in the sealed p...

Страница 31: ...ions 30 C 60 relative humidity the parts must be processed and soldered within this specified period of time Once the sealed package of the reel is opened and the parts exposed to humidity they need t...

Страница 32: ...nd use a vacuum hot barrier sealing machine for sealing if not processed within specified floor time Storage in a nitrogen cabinet or dry box is also a possible approach to prevent moisture intake Do...

Страница 33: ...cause excessive slumping Time 60 120 seconds If the preheat is insufficient rather large solder balls tend to be generated Conversely if performed excessively fine balls and large balls will be gener...

Страница 34: ...ak Temp 230 250 C Liquidus Temperature 116 221 C Elapsed Time s max 20 40 s Typical Leadfree Soldering Profile End Temp 150 200 C max 3 C s C Figure 22 Recommended soldering profile When soldering lea...

Страница 35: ...tep after the soldering 3 3 6 Repeated Reflow Soldering Only a single reflow soldering process is encouraged for boards with a TIM 5H module populated on it The reason for this is the risk of the modu...

Страница 36: ...ongly advised to qualify such processes in combination with the TIM 5H module before implementing this in the production Casting will void the warranty 3 3 12 Grounding Metal Covers Attempts to improv...

Страница 37: ...t which delivers a detailed test report for each unit The following measurements are done Digital self test Software Download verification of FLASH firmware etc Measurement of voltages and currents Me...

Страница 38: ...l GPS simulator to the OEM product 2 Choose the power level in a way that the Golden Device would report a C No ratio of 38 40 dBHz 3 Power up the DUT Device Under Test and allow enough time for the a...

Страница 39: ...A Migration to u blox 5 receivers Migrating ANTARIS 4 to a u blox 5 GNSS receiver is a fairly straightforward procedure Nevertheless there are some points to be considered during the migration Not al...

Страница 40: ...10 VDD18OUT NC VCC_OUT NC Internally connected to VCC if you have circuitry connected to this pin check if it withstands the VCC voltage 11 to 16 GND GND GND GND No difference 17 RF_IN RF_IN RF_IN RF_...

Страница 41: ...Reserved NC 8 9 EXTINT1 GPSMODE3 NC EXTINT1 NC Reserved NC 9 10 VDD18OUT NC VDD18OUT NC VCC_OUT NC 10 11 to 16 GND GND GND GND GND GND 11 to 16 17 RF_IN RF_IN RF_IN RF_IN RF_IN RF_IN 17 18 GND GND GND...

Страница 42: ...etween the active parts of the antenna If the antenna is only loaded with air it will be comparatively large high dielectric constant ceramics result in a much smaller form factor The smaller the dime...

Страница 43: ...d to the supply pin of the LNA The use of an active antenna is always advisable if the RF cable length between receiver and antenna exceeds approximately 10 cm Care should be taken that the gain of th...

Страница 44: ...sion the correct dimensions for the size of the ground plane can serve as a useful compromise between maximum gain and reasonable polarization loss Figure 28 Typical Gain and Axial Ratio of a Patch an...

Страница 45: ...on size and shape of the ground plane As with patch antennas filling the antenna with a material with a high dielectric constant can reduce the size of helix antennas Sizes in the order of 18 mm leng...

Страница 46: ...er to analyze effects like this one would normally employ electrical field simulations which will result in exact representation of the electric fields in the near field of the antenna Furthermore the...

Страница 47: ...suring a direct line of sight with as many visible satellites as possible 1st Choice Placement 2nd Choice Placement Recommended Antenna positions Performance may be degraded If recommended placements...

Страница 48: ...et max 30 dBm at 1710 MHz in close proximity to the GPS GALILEO antenna When integrating GPS GALILEO with other RF transmitters special care is necessary If the particular application requires integra...

Страница 49: ...e general hints on how to decrease the level of noise emitted from digital circuit board that are potentially in close proximity to the GPS receiver or the antenna C 2 1 Power and Ground Planes Use so...

Страница 50: ...ize small capacitance types reduce high frequency emissions Large size high capacitance types stabilize low frequency variations It s preferred to have a large number of small value capacitors in para...

Страница 51: ...he digital part Tantalum capacitors show good thermal stability however their high ESR equivalent series resistance limits the usable frequency range to some 100 kHz Figure 35 Temperature dependency o...

Страница 52: ...t a metal box will terminate all electrical fields on its surface In practice we have the problem that we need to route some signals from inside to outside of this box Signal Layers SupplyGroundLayer...

Страница 53: ...nd point that the capacitor is connected to is not ideal meaning the ground connection or plane has a finite resistance noise will be injected into the ground net Therefore one should try to place any...

Страница 54: ...tivity ground connection between the two shields But now it might be difficult to control the path of the ground return currents to the power supply since the shield is probably connected to the suppl...

Страница 55: ...on for TIM 5H modules on tape 29 Figure 20 Applicable MSD Label See Section 3 1 for baking instructions 30 Figure 21 Humidity Indicator Card good condition 31 Figure 22 Recommended soldering profile 3...

Страница 56: ...Table 1 Features of the TIM 5H 8 Table 2 Pinout TIM 5H 16 Table 4 Short circuit protection bill of material 24 Table 5 Active Antenna Supervisor bill of material 26 Table 6 Active Antenna Supervisor M...

Страница 57: ...ceivers PUBX u blox proprietary extension to the NMEA protocol UBX File extension for u center log file or short form for the UBX protocol UBX Protocol A proprietary binary protocol used by the u blox...

Страница 58: ...blox com Technical Support Phone 41 44 722 74 74 E mail support u blox com Asia Australia Pacific u blox Singapore Pte Ltd 435 Orchard Road 17 01 Wisma Atria Singapore 238877 Phone 65 6734 3811 Fax 65...

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