RB-2525GNS

Internal GPS/GLONASS Receiver

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Product Description

Order Information for built-in GLONASS/GPS antenna modules

Part Number	Dimension(mm)	Serial Interface	Voltage Range(+/- 10%)	Output Connector type	1 PPS	Architecture
RB-2525GNS	25x25	UART/RS232	3.3-5V	6 pins wafer connector 6 pins male header	-	Flash

RB-2525GNS is a highly integrated smart GLONASS/GPS module with a ceramic GLONASS/GPS patch antenna, it also can either connect to the external active antenna. The module is with 80 channel acquisition engine and 20 channel track engine, which be capable of receiving signals from up to 100 GLONASS/GPS satellites and transferring them into the precise position and timing information that can be read over UART/RS232 interface. Small size and high-end GLONASS/GPS functionality are at low power consumption, supply voltage of 3.3v-5v is supported.

RB-2525GNS is optimized for applications requiring good performance, low cost, and maximum flexibility; suitable for a wide range of OEM configurations including handhelds, MID, Mobile, PDA-centric personal navigation system.

The smart GLONASS/GPS antenna module is available as an off-the-shelf component, 100% tested. The smart GLONASS/GPS antenna module can be offered for OEM applications with the versatile adaptation in form and connection. Additionally, the antenna can be tuned to the final systems’ circumstances.

Product Feature

100 channels to acquire and track satellites simultaneously
Industry-leading TTFF speed
Tracking sensitivity reaches -161 dBm
0.5 PPM TCXO for quick cold start
Integral LNA with low power control
Cold start
Hot start ≈ 1 sec under clear Sky
Accuracy 5m CEP
DGPS and WAAS Capable
Operable at 3.3v-5v LVTTL/RS232
UART interface at CMOS level
Small form factor of 25 mm W x 25 mm Lx 8 mm H
Mountable without solder process
Support the built-in antenna or the external active antenna
1.00 m/m WTB Wafer SMT S/R R/A 6Pins or 1.27 m/m male header 6 Pins

Applications

Mobile phones
MID
Automotive and Marine Navigation
Automotive Navigator Tracking
Emergency Locator
Geographic Surveying
Personal Positioning
Sporting and Recreation

Product Specification

Parameter	Specification
Receiver Type	100 Channels GLONASS/GPS L1 frequency, C/A Code
Time-To-First-Fix	Cold Start (Autonomous)Warm Start (Autonomous)
Sensitivity	tracking & Navigation -161 dBm Reacquisition -161 dBm Cold Start (Autonomous) -146 dBm
Accuracy	Autonomous 2.5 m CEP Velocity 0.1 m/sec (without aid) Time 300 ns
Update Rate	Supports 1 / 2 / 4 / 5 / 8 / 10/20 Hz update
Velocity Accuracy	0.1m/s
Heading Accuracy	0.5 degrees
Dynamics	4 G (39.2 m/sec)
Operational Limits	Velocity 515 m/s (1000 knots) Altitude
Serial Interface	LVTTL level with either 1.00 m/m WTB Wafer SMT S/R R/A 6Pins, or 1.27 m/m male header 6 Pins
Support antenna types	Built-in patch antenna
Protocol	NMEA-0183 V3.01 GPGGA, GNGLL, GNGNS, GPGSA, GLGSA, GNGSA, GPGSV, GLGSV, GNVTG, GNRMC
Datum User definable	Default WGS-84 User definable
Input Voltage	3.3v-5v
Input Current	~65mA tracking
Dimension	25 mm L x 25 mm W x 8 mm H
Weight	18g

Serial Port Settings

The default configuration within the standard GLONASS/GPS firmware is:

Standard configuration of serial port
Supporting 4800/9600/38400/115200 baud rate (Default Value : 9600), 8 data bits, no parity, 1 stop bit, no flow control

Improved TTFF

In order to improve the TTFF (Time To First Fix), RB-2525GNS has been built with the back-up battery (SEIKO) to support the RTC with a back-up power when no system power is available.

DC Electrical Characteristics

Voltage	+3.3V ~ +5.0V DC
Supply current	TBD @ 5.0V DC Typical
Backup Battery Power	+3.3V DC

Communication Specifications

Item	Description
Interface	Full duplex serial interface
Bit rate	4800/9600/38400/115200bps
Start bit	1bit
Stop bit	1bit
Data bit	8bit
Parity	None
transmission data	SACII NMEA0183 Ver:3.01
Update rate	1Hz
Output sentence	GPGGA, GPGSA, GPGSV, GPRMC, GPVTG (typ)