SiRFstarIII GSD3tw

This single die, small footprint implementation of SIRFstarIII™ architecture provides a cost-effective solution for high-volume embedded applications where host processor resources are available to execute SiRFNav®— SiRF’s high performance navigation software suite, providing Autonomous navigation, Aided-GPS navigation (both user plane and control plane), and SiRFInstantFix™ technology. This 90 nm single-die IC has fully integrated 1.2 V LDOs, reducing the external Bill of Materials.

GENERAL SPECIFICATIONS
Supported Software
Standard
SiRFTrackIII™ GPS tracker software
SiRFNavIII™ standalone GPS navigation software
Premium
SiRFLoc® Client (SLC) A-GPS software- SiRFNavIII A-GPS navigation software - SiRFLocStack™ location protocol library for user plane (SUPL) and control plane (RRLP, RRC) A-GPS
SiRFInstantFix extended ephemeris software; connectivity optional
Smallest Footprint Package
Type: 49-pin WLCSP with a ball pitch of 0.4 mm
Dimensions: 3.12 mm x 3.17 mm; Height: 0.68 mm
Typical total solution footprint: 30 mm2
Low Production Cost Package
Type: 49-pin TFBGA with a ball pitch of 0.5 mm
Dimensions: 4 mm x 4.5 mm; Height: 0.68 mm
Typical total solution footprint: 40 mm2

KEY FEATURES
Single die SiRFstarIII proprietary Satellite Signal Processor technology
High sensitivity signal acquisition capability (Aided-GPS)
Integrated ROM and controller to minimize host platform loading
90 nm RFCMOS for cost effective baseband + RF integration
On-chip LNA reduces total solution cost and footprint
Extremely low power
Reduced pin count and small package size simplifies PCB layout
TCXO power supply control through integrated FET switch
GPS Architecture Highlights
Premium SiRFstarIII architecture with 200,000+ effective correlators for fast TTFF and high sensitivity acquisition
GPS Features
SiRFNav host software with: real-time navigation for location based services
Advanced Power Management and Adaptive TricklePower™ plus low energy-per-fix in point position applications
Multimode A-GPS support: Autonomous, MS Based, MS Assisted
Location protocol libraries supporting RRC, RRLP, 3GPP2, SUPL, E-911

TECHNICAL SPECIFICATIONS
Horizontal Position Accuracy 1 • Autonomous <2.5>

HIGHLIGHTED ADVANTAGES
For cellular handset applications where space is at a premium, the GSD3tw offers two excellent package options; one for low cost production and one for small footprint mainstream design.
The GSD3tw supports SiRFLoc Client, the patented Multimode A-GPS software powering mobile phones optimized for location-enabled services. SiRFLoc improvesGPS location capability in wireless system environments by utilizing various modes of wireless infrastructure assistance to improve weak signal reception.
For personal navigation devices with high-end host processors, the GSD3tw with SiRFNav software provides SiRF Autonomous mode GPS navigation, setting a newperformance benchmark for high-sensitivity navigation.
SiRF’s standard autonomous software also supports SiRFInstantFix technology, which eliminates the initial task of obtaining broadcast GPS data from the satellites themselves, resulting in a faster TTFFs, even in weak signal environments.

credit: http://www.sirf.com/

SiRFstarIII GSC3LTi and GSC3LTif Flagship Multimode A-GPS Solution

These tiny dynamos condense SiRFstarIII™ technology into the lowest power, highest performing SiRF solution, and they measure a compact 6x6x1.2 mm—thanks to 90-nanometer technology. Less expensive and 25% smaller and than the GSC3LT, the GSC3LTi is engineered for wireless applications and handheld systems with centralized power management that don’t require a wholly independent, self-managed GPS subsystem power supply. Internal Flash memory is optional (GSC3LTif).

GENERAL SPECIFICATIONS
Supported Software
Standard
GSW3LT Standalone GPS software with SBAS support
Premium
SiRFLoc® Client (SLC) LT A-GPS Multimode Location Engine™ for GSM/3GPP
SiRFLoc Client (SLC) LT A-GPS Multimode Location Engine for CDMA IS-801A with coarse location
SiRFInstantFix™ extended ephemeris service for very fast TTFFs
Package
Type: 120-ball thin profile, fine pitch ball grid array (TFBGA) with a ball pitch of 0.5 mm
Dimensions: 6 mm x 6 mm; Height: 1.2 mm ROM device, 1.4 mm Flash device
Typical total solution footprint: 105 mm2

KEY FEATURES
90 nm SiRFstarIII-LT DSP Core
Navigation Engine (PVT) solution
4 Mbit on-chip ROM program memory
SPI and UART Host interfaces
Up to eight programmable GPIOs
GPS Architecture Highlights
High sensitivity: -159 dBm for indoor fixes
200,000+ effective correlators for very fast TTFF and high sensitivity acquisition
SBAS (WAAS, MSAS, EGNOS) support
GPS Features
Real time navigation for location based services
Low energy-per-fix in point position applicationsLow energy-per-fix in point position applications
Advanced Power Management and Adaptive TricklePower™ plus low energy-per-fix in point position applications
Multimode A-GPS Support: Autonomous, MS Based, MS Assisted
Location protocol libraries supporting RRC, RRLP, 3GPP2, SUPL, E-911

TECHNICAL SPECIFICATIONS
Horizontal Position Accuracy 1 • Autonomous <2.5>

HIGHLIGHTED ADVANTAGES
The GSC3LTi(f) is supported by SiRF standard autonomous software that’s setting new performance benchmarks in the portable navigation systems market. SiRF standard autonomous software also supports recently announced SiRFInstantFix technology, which eliminates the initial task of obtaining broadcast GPS data from the satellites themselves, resulting in a faster Time-To-First-Fix (TTFF), even in weak signal environments.
The GSC3LTi(f) also supports SiRFLoc Client, the patented Multimode A-GPS software powering mobile phones optimized for location-enabled-services. SiRFLoc improves GPS location capability in wireless system environments by utilizing various modes of wireless infrastructure assistance to improve weak signal reception.
The GSC3LTi(f) GPS performance is fully compliant with the industry-standard Third Generation Partnership Project (3GPP) TS25.171 and CDMA TIA916 requirements, with extremely fast assisted fix speeds that are often significantly faster than required by the standard.

credit: http://www.sirf.com