GPS receiver

GNS 603

Datasheet V1.0

preliminary specification

V 1.0, May 24

2013

1 INTRODUCTION

GNS603 is a small autonomous GPS receiver, based upon the MT3339 single chip, available with a

finely tuned, high-sensitivity patch ceramic antenna.

The navigation performance and accuracy is further improved by using correction data from SBAS

(WAAS, EGNOS, GAGAN, MSAS, QZSS).

The GNS603 provides a extra embedded functionality for connection of an external active GPS

antenna. An automatic antenna switching function and a short circuit protection features a software

antenna status message called “Antenna Advisor”. The “Antenna Advisor” helps to indicate the

different states, including active antenna connection, antenna open circuit detection and antenna

shortage.

First Fixes after just a few seconds are achieved with the help of A-GPS using EPO

( Extended

Prediction Orbit) and the EASY

“self generated orbit prediction” algorithm. EASY

(Embedded

Assist System) does not require any resources or assist data from the host.

The excellent low power design makes it easy to implement this receiver in power sensitive, battery

supplied applications. The new AlwaysLocate

power management feature will improve this

behaviour additionally. It adaptively adjusts power consumption depending on the environment and

motion conditions, in order to achive a balance between fix rate, power consumption and position

accuracy.

Very low power requirements (typ 66mW@ 3.3V) and internal voltage regulator makes it easy to

run the receiver with various power supplies and allows direct connection to LiIon batteries.

GNS603 offers the industry’s highest level of navigation sensitivity up to -165dBm

. It has superior

dynamic performance at high velocity and provides effective protection against interference signals

using MTAIC

( Multi-tone active interference canceller). Up to 12 independent channel

interference continious wave jammers <-80dBm can be eliminated or reduced.

The embedded logger function LOCUS

with a 16-hrs on chip memory makes this GPS module a

complete track logger for many applications. With AlwaysLocate

data logging can be achieved up

to 32-hrs under standard conditions.

In professional timing applications the outstanding high accuracy PPS (pulse per second) hardware

pin is used for synchronization to GPS second. Typical accuracy is 10ns.

1 note: Based on chip specifications

GPS receiver

GNS 603

Datasheet V1.0

preliminary specification

V 1.0, May 24

2013

FEATURES

• 66 acquisition-/ 22 tracking channels

• Ultra high tracking/navigation sensitivity: -165dBm

• Smart antenna: finely tuned ceramic patch antenna

• Automatic external/internal antenna switching function

• “Antenna Advisor” function

• SBAS (WAAS,EGNOS,MSAS,GAGAN, QZSS) correction support

• A-GPS by EPO “Extended Prediction Orbit”

enables 7/14days prediction

• 12 Multitone Active Interference Canceller (MTAIC) for GPS-in-band jammer rejection

• EASY

: Self generated orbit prediction support

• AlwaysLocate

: Intelligent Algorithm for power saving

• High accuracy 1PPS output

• NMEA-0183 or binary protocol

• High update rate (up to 10/s)

• Embedded logger function with 16hrs internal memory

• GPS current consumption (@3.3V):

Acquisition: 25mA Typical

Tracking: 20mA Typical

• Low backup current consumption 7uA, typical

• SMD type with stamp holes

• Small form factor: 16x16x5.2mm

• CE, FCC and RohS certified

note: Based on chip specifications