| SPK ELECTRONICS CO., LTD. |
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Item Number:
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GPS Receiver SPK-LT548SLP |
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Product Name:
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Sirf star III GPS Receiver module (24mm*20mm*2.6mm) |
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Description:
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Specifications
Technical Specifications
Feature Item Description
Chipset GSC3f SiRFstarIII low power single chipset
General
Frequency L1, 1575.42 MHz
C/A code 1.023 MHz chip rate
Channels 20
Accuracy
Position
10 meters, 2D RMS
5 meters 2D RMS, WAAS corrected
<5meters(50%)
Datum
Time to First Fix
(TTFF) (Open Sky & Stationary
Velocity 0.1 meters/second
Time 1 microsecond synchronized to GPS time
Default WGS-84
Other selectable for other Datum
Reacquisition 0.1 sec., average
Snap start 1 sec., average
Hot start 1 sec., average typical TTFF Warm start 38 sec., average typical TTFF
Requirements) Cold start 42 sec., average typical TTFF
Dynamic
Conditions
Power
Serial Port
Time-1PPS Pulse
Altitude 18,000 meters (60,000 feet) max.
Velocity 515 meters/second (1000 knots) max.
Acceleration 4g, max.
Jerk 20 meters/second3, max. Main power input 3.3 ~ 5.0 VDC input
Power consumption ≈165 mW (continuous mode) Supply Current ≈49 mA
Backup Power 1.65 ~ 5.0 VDC input.
Electrical interface Two full duplex serial TTL interface.
Protocol messages NMEA-0183@4800 bps (Default) Level TTL
Pulse duration The 1PPS pulse width is 1 £gs, this 1PPS is NOT suited to steer various oscillators (timing receivers, telecommunications system, etc).
Time reference At the pulse positive edge.
Measurement Aligned to GPS second, 1 microsecond
Environmental Characteristics
Items Description
Operating temperature range -40 deg. C to +85 deg. C
Storage temperature range -55 deg. C to +100 deg. C
Physical Characteristics
Items Description
Length 24 mm ¡Ó 0.1mm (0.94in)
Width 20 mm ¡Ó 0.1mm (0.79 in) Height 2.9 mm ¡Ó 0.1mm (0.11 in)
Weight 2.5g
Interface Specifications
Items Description
I/O 28 pin SMD micro package
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