Maestro A1084 User Manual

GPS Receivers A1084 A Description of Maestro’s GPS Receiver Modules A1084-A/-B User’s Manual Version 1.4

V1.4 – Mar-11 User’s Manual Page 10 of 39 Figure 3: A1084 tape specifications (2) Figure 4: A1084 tape specifications (3) One complete ree

V1.4 – Mar-11 User’s Manual Page 11 of 39 2.3 Additional Equipment EVA1084A Evaluation Kit (including one module A1084A) Table 4: Additional

V1.4 – Mar-11 User’s Manual Page 12 of 39 3 Quick Start In order to allow an easy and quick start with the A1084-A and A1084-B modules, this cha

V1.4 – Mar-11 User’s Manual Page 13 of 39 A1084-AGSC3f/LPxserialVbakTxRxGND3.3VA BVbakGNDVbakGNDSupercapBatteryC6 ++Back-up supply opti

V1.4 – Mar-11 User’s Manual Page 14 of 39 For completeness the following pictures show the use of an RS232 level shifter. GND123456789C10.1µFC2

V1.4 – Mar-11 User’s Manual Page 15 of 39 3.2 Antennas Generally, the quality of the GPS antenna chosen (passive or active) is of paramount impo

V1.4 – Mar-11 User’s Manual Page 16 of 39 4 Mechanical Outline 4.1 Details Component Side A1084 All dimensions in [mm, (inch)] Figure 8: Mec

V1.4 – Mar-11 User’s Manual Page 17 of 39 4.2 Details Solder Side A1084 Solder pad size (outer pads): 1.0 x 0.8 Solder pad size (inner pads):

V1.4 – Mar-11 User’s Manual Page 18 of 39 5 Pin-out Information 5.1 Layout A1084 Figure 10: Pin-out information (bottom view) A1084 pi

V1.4 – Mar-11 User’s Manual Page 19 of 39 5.2 Description A1084 Signals 5.2.1 Description A1084-A Signals Pin Symbol Function Description 1

V1.4 – Mar-11 User’s Manual Page 2 of 39 Revision History Rev. Date Description 1.0 01-26-09 First release 1.1 06-30-09 Clear differentiatio

V1.4 – Mar-11 User’s Manual Page 20 of 39 5.2.2 Description A1084-B Signals Pin Symbol Function Description 1 nRST Input Reset input (open

V1.4 – Mar-11 User’s Manual Page 21 of 39 Note (1): In the event that an active antenna is connected to pin 12, ANT_INT the antenna supply volta

V1.4 – Mar-11 User’s Manual Page 22 of 39 6 Electrical Characteristics 6.1 Operating Conditions Pin Description Min Typical MaxVbak 1.8V 3

V1.4 – Mar-11 User’s Manual Page 23 of 39 6.3 DC Electrical Characteristics Symbol Parameter Min Max Unit1PPS, TX1, TX0,RFPWUP, nWAKEUP, GPIO 0

V1.4 – Mar-11 User’s Manual Page 24 of 39 7 Mounting This chapter describes the suggested mounting process for the A1084-A and A1084-B receiver

V1.4 – Mar-11 User’s Manual Page 25 of 39 8 Use of GPS Antennas 8.1 Connecting a GPS antenna to the GPS receiver The ANT_EXT or ANT_INT pin is u

V1.4 – Mar-11 User’s Manual Page 26 of 39 In order to achieve the impedance of 50 Ω, the width of the strip line needs to be calculated. It depe

V1.4 – Mar-11 User’s Manual Page 27 of 39 8.2 Antenna Connections 8.2.1 Active Antennas 8.2.1.1 On External / Active Antenna Input (ANT_EXT) Gen

V1.4 – Mar-11 User’s Manual Page 28 of 39 8.2.1.2 On Internal / Passive Antenna Input (ANT_INT) This schematic is a part of the EVA1084-A (Evalu

V1.4 – Mar-11 User’s Manual Page 29 of 39 8.2.2 Passive Antennas A passive antenna connected to ANT_INT should be placed as close as possible to

V1.4 – Mar-11 User’s Manual Page 3 of 39 Disclaimer THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF MAESTRO WIRELESS SOLUTIONS LIMITED. IT MA

V1.4 – Mar-11 User’s Manual Page 30 of 39 9 Quality and Reliability 9.1 Environmental Conditions Operating temperature -40°C … +85°C Operating

V1.4 – Mar-11 User’s Manual Page 31 of 39 10 Applications and Hints 10.1 Minimum Configuration Please refer to chapter “3.1 Minimum Configurati

V1.4 – Mar-11 User’s Manual Page 32 of 39 Figure 15: Application note: Antenna sensor adaptation 10.2.2 Antenna Sensor with Current Limiter Th

V1.4 – Mar-11 User’s Manual Page 33 of 39 10.3 VANT Pin (antenna voltage input pin) The VANT pin is an input pin. The supply voltage for an act

V1.4 – Mar-11 User’s Manual Page 34 of 39 10.5 Reset Signal The nRST pin is an input pin. The nRST pin can be used to generate a reset on the A

V1.4 – Mar-11 User’s Manual Page 35 of 39 10.6 Battery Back-up This application note describes how to back-up the RTC and the SRAM of the GPS re

V1.4 – Mar-11 User’s Manual Page 36 of 39 10.7 Push-to-Fix Mode Push-to-Fix mode is designed for the application that requires infrequent positi

V1.4 – Mar-11 User’s Manual Page 37 of 39 11 Evaluation Kit EVA1084-A For demonstration and easy evaluation of GPS performance Maestro offers an

V1.4 – Mar-11 User’s Manual Page 38 of 39 12 Related Information 12.1 Contact This manual was created with due diligence. We hope that it will b

V1.4 – Mar-11 User’s Manual Page 39 of 39 13 List of Figures Figure 1: A1084-A label ...

V1.4 – Mar-11 User’s Manual Page 4 of 39 Table of Contents 1 Introduction...

V1.4 – Mar-11 User’s Manual Page 5 of 39 9 Quality and Reliability...

V1.4 – Mar-11 User’s Manual Page 6 of 39 1 Introduction Maestro’s GPS modules A1084-A and A1084-B are highly integrated GPS receiver modules tha

V1.4 – Mar-11 User’s Manual Page 7 of 39 1.1 Label The A1084-A label (size: 9.5 x 9.5 mm²) contains the following information: Figure 1: A10

V1.4 – Mar-11 User’s Manual Page 8 of 39 1.2 Characteristics The modules are characterized by the following parameters. 1.2.1 GPS Characteristi

V1.4 – Mar-11 User’s Manual Page 9 of 39 2 Ordering Information 2.1 GPS Receivers A1084 The order number is built as follows: • A1084-Axxx •