NAELCOM - LASSEN SQ - Récepteur GPS OEM 3.3V, 8 canaux, en format réduit.

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Lassen SQ
Low-power, micro-sized GPS solution
for mobile products

datasheet

Introduction

Trimble’s new Lassen® SQ module adds complete GPS functionality to your mobile product in a postage-stamp-sized footprint with ultra-low power consumption. The module is designed for portable handheld, battery-powered applications such as cell phones, pagers, PDAs, digital cameras, and many others.

Using Trimble’s breakthrough FirstGPS™ architecture, the module delivers complete position, velocity and time (PVT) solutions for use in the host application. The Lassen SQ module uses minimal power and space and delivers a robust, reliable PVT solution.

The Lassen SQ module is the only stamp-sized GPS product with the three most popular standard protocols: TSIP (Trimble Standard Interface Protocol), TAIP (Trimble ASCII Interface Protocol) and NMEA 0183. The module is enclosed within a metal shield for ease of handling. The shield acts as a protective case.

FirstGPS Architecture

The FirstGPS architecture consists primarily of two integrated circuits and FirstGPS firmware. This technology enables the Lassen SQ to achieve the unique combination of both ultra-low power usage and micro-size in the same unit.

Hardware

The Lassen SQ module packages this architecture in a tiny form factor, (approximately 26 mm x 26 mm, including the metal shield). It typically requires only 110 mW of power (at 3.3 VDC). Total typical power usage, including the Trimble 3.3 VDC miniature antenna, is <143 mW.

The highly integrated module is a miniature board containing a GPS hardware core based on Trimble’s Colossus™ RF ASIC and IO-TS digital signal processor
(DSP) design and a 32-bit RISC CPU. The module offers onboard data storage in flash memory for complete processing capability.

Antennas

The Lassen SQ module is compatible with active, 3.3 VDC antennas. Three such antennas are available from Trimble and are recommended for use according to your application:

An ultra-compact embedded antenna, approximately the same size as the module itself. This antenna is unpackaged, for easy integration into mobile applications.
A compact, unpackaged antenna slightly larger than the ultra-compact model above.
A compact, packaged antenna with magnetic mount for flexible, movable installation.

Starter Kit

The Lassen SQ Starter Kit provides everything you need to get started integrating state-of-the-art GPS capability into your application.

Lassen SQ Technical Data

Key Features:
8-channel simultaneous operation Ultra-low power consumption: less than 110 mW @ 3.3 V Flash memory Compact size: 26 mm W x 26 mm L x 6 mm H (1.02” x 1.02” x 0.24”) Supports TSIP, TAIP, NMEA protocols Antenna open and short circuit detection and protection
Performance Specifications :
General:	L1 (1575.42 MHz) frequency, C/A code, 8-channel, continuous tracking receiver, 32 correlators
Update rate:	TSIP @ 1 Hz; NMEA @ 1 HZ, TAIP @ 1 HZ
Accuracy:	Horizontal: <6 meters (50%), <9 meters (90%) Altitude: <11 meters (50%), <18 meters (90%) Velocity: 0.06 m/sec PPS: ±95 nanoseconds
Acquisition:	Hot Start: <14 sec (50%), <18 sec (90%) Warm Start: <38 sec (50%), <45 sec (90%) Cold Start: <90 sec (50%), <170 sec (90%) Cold start requires no initialisation. Warm start requires last position, time and almanac are saved in battery back-up memory. Hot start requires that the ephemeris also saved.
Reacquisition:	<2 sec. (90%)
Dynamics:	Acceleration: 4g (39.2 m/sec²) Motional jerk: 20 m/sec³
Operational limits:	Altitude <18000m or velocity <515m/s (COCOM limit) Either limit may be exceeded but not both
Interface Specifications :
Connectors:	I/O: 8-pin (2x4) male header, micro terminal strip ASP 69533-01 or similar RF: Low-profile coaxial connector H.FL-R-SMT (10), 50 Ohm
Serial Port:	1 serial port (transmit/receive)
PPS:	3.3 V CMOS-compatible, TTL-level pulse Once per second with the rising edge of the pulse synchronized with UTC
Protocols:	TSIP @ 9600 baud, 8 Bits NMEA 0183 v3.0, selectable baud rate 8 Bits TAIP @ selectable baud rate, 8 Bits
NMEA Messages:	GGA, VTG, GLL, ZDA, GSA, GSV and RMC Messages selectable by TSIP command; selection stored in flash memory
Electrical Characteristics :
Prime power:	+3.0 VDC to +3.6 VDC (3.3 V typ.)
Power consumption:	GPS board only: 110 mW @ 3.3 V With embedded antenna: 143.3 mW @ 3.3 V
Backup power:	+2.5.VDC to +3.6VDC
Ripple Noise:	Max 60 mV, peak-to-peak from 1 Hz to 1 MHz
Antenna Fault Protection:	Short-circuit detection and protection
Environmental Specifications :
Operating Temperature:	–40°C to +85°C
Storage Temperature:	–55°C to +105°C
Vibration:	0.008 g²/Hz 5 Hz to 20 Hz 0.05 g²/Hz 20 Hz to 100 Hz –3 dB/octave 100 Hz to 900 Hz
Operating Humidity:	5% to 95% R.H. non-condensing @ +60°C
Physical Characteristics :
Enclosure:	Metal enclosure with solder mounting tabs
Outside Dimensions:	26 mm W x 26 mm L x 6 mm H (1.02” x 1.02” x 0.24”)
Weight:	Approximately 5.7 grams (0.2 ounce) including the shield