Table of Contents
1
2
GENERAL DESCRIPTION ....................................................................................... 3
PART NUMBER DETAIL DESCRIPTION .............................................................. 3
Ordering Information.................................................................................................
3
3
GENERAL FEATURES ............................................................................................. 3
3.1
Improved Jamming Mitigation ........................................................................... 4
4
COMPLIMENTARY DOCUMENTATION ............................................................. 4
4.1
Inventek Systems ................................................................................................ 4
4.2
SiRF Technology ................................................................................................ 4
5
SPECIFICATIONS ..................................................................................................... 5
5.1
General ................................................................................................................ 5
5.2
Module Architecture ........................................................................................... 5
5.3
Hardware Features .............................................................................................. 6
5.4
Mechanical Specifications .................................................................................. 6
5.5
Environmental Specifications ............................................................................. 6
6
PERFORMANCE ....................................................................................................... 6
6.1
Position and Velocity .......................................................................................... 6
6.2
Time To First Fix
(See Note 2)
(TTFF) .................................................................... 7
6.3
Dynamic Constraints ........................................................................................... 7
6.4
Receiver Sensitivity ............................................................................................ 7
7
HARDWARE ELECTRICAL SPECIFICATIONS ................................................... 9
7.1
Power Supply Maximum Ratings ....................................................................... 9
7.2
Specifications ...................................................................................................... 9
7.2.1 Electrical Specification ................................................................................... 9
7.2.2 Mechanical Specification .............................................................................. 10
7.2.3 Pin Positions................................................................................................. 10
7.2.4 Detailed Pin Description ............................................................................... 12
8
BASIC OPERATION (SPI or UART) ..................................................................... 13
8.1
NMEA input and output messages ................................................................... 14
8.2
SiRF OSP Protocol ........................................................................................... 14
8.3
Antenna ............................................................................................................. 15
Antenna Patch specifications –Inventek PAT154 ( ISM480 Ground plane) ................ 15
8.4
Return Loss ....................................................................................................... 15
8.5
Impedance – Smith Chart.................................................................................. 16
8.6
Gain Pattern (Unit: dBic) .................................................................................. 17
8.7
Return Loss and Impedance .............................................................................. 17
8.8
Axial Ratio ........................................................................................................ 19
9
Product Compliance Considerations ......................................................................... 19
10 ORDERING INFORMATION ................................................................................. 19
11 REVISION CONTROL ............................................................................................ 20
12 CONTACT INFORMATION ................................................................................... 20
DOC-DS-20002-1.2
Page 2
1 GENERAL DESCRIPTION
The
Inventek
ISM480F1 is a 48 channel global positioning system (GPS) receiver with
an integrated 15x15x4 mm ceramic patch antenna with high sensitivity, high gain, and
low power. The small form factor GPS receiver is based on the fast and deep GPS
signal search capabilities of CSR, SiRFstar IV™ architecture.
Several key features about this module are:
The module is capable of generating and storing extended ephemeris data to an
external device for much faster hot starts in weak signal environments.
Built-in jamming detection and mitigation to permit fast and accurate navigation
solutions in high noise environments.
Default output is SPI (Slave).
An addition 4 dB in tracking sensitivity and 4 dB navigation sensitivity over the
world class SiRFstar III devices.
2 PART NUMBER DETAIL DESCRIPTION
Ordering Information
Device
Description
GPS Module, Commercial Temp., Standard
ISM480F1
ISM480F1
ISM480EVB
Firmware
GPS Module, Commercial Temp, with 9600
baud NEMA Firmware
GPS Evaluation board, with ISM480F1-C4.1,
Cable, Logging, Display
Ordering Number
ISM480F1-C4.1
ISM480F1-C5.V0006
ISM480EVB
3 GENERAL FEATURES
Based on the high performance features of the SiRFstar IV, GSD4e-9411
processor.
Compact module size for easy integration: 16.5x 16.5 x 7 mm (shield height
included).
Host UART or SPI or I
2
C interface ( Default SPI)
48 track verification channels
Custom output Firmware can be provided
Integrated LNA, SAW Filter, TCXO and RTC
Single power supply voltage 1.8V.
Lead Free Design which is compliant with ROHS requirements
Cold, Warm, Hot Start Time: 35, 35, 1 Sec. respectively.
Reacquisition Time: 1 second.
Programmable
DOC-DS-20002-1.2
Page 3
3.1 Improved Jamming Mitigation
Better identification and dismissal of jamming signals through enhanced
Carrier Wave (CW) detection.
Removes in-band jammers up to 80 dB-Hz
Tracks up to 8 CW jammers
Enhanced development tools to identify noise issues for troubleshooting
potential system level noise issues
4 COMPLIMENTARY DOCUMENTATION
4.1 Inventek Systems
Inventek Test Report
ISM480EVB- Board Specification
4.2 SiRF Technology
NMEA Reference Manual (www.Inventeksys.com ) under specifications.
SiRF Binary Protocol Reference Manual
OSP Reference Manual
Sirf Live Software
DOC-DS-20002-1.2
Page 4
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