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ET-314AC
High Performance GPS Engine Board
Electrical Specification
Absolute Maximums Ratings
Parameter
POWER Supply
Main power supply
Backup battery supply
Main power supply Current
Backup battery supply Current
Interface (VCC = 3.3V, VBAT= 3.3V, Operation Temp.= 25℃)
High Level input Voltage
Low Level input Voltage
High Level input Current
Low Level input Current
High Level output Voltage
Low Level output Voltage
RF Input
Input Impedance
Operating Frequency
☆ VDD is 2.85V for SiRF STARIII CHIP
Receiver Performance
Sensitivity Tracking:-159dBm
Cold Start 42 seconds, average
Warm Start 38 seconds, average
Hot Start 1 second, average
Reacquisition 0.1 second, average
Accuracy Position:
Maximum Altitude ＜ 18,000 meter
Maximum Velocity ＜ 515 meter/ second
Maximum Acceleration ＜ 4G
2010/4/1
Min.
Typ.
3.1
2.0
23.80
26.24
4.5
0.7*VDD
-0.3
-10
-10
0.75*VDD
1.575
10 meters 2D RMS
1-5 meters 2D RMS, WAAS corrected.
Velocity: 0.1 m/s
Time: 1us synchronized to GPS time
- 5 -
Max.
3.3
3.5
3.5
26.70
5.0
12.6
3.5
0.3*VDD
10
60
10
-60
0.25*VDD
50
Conditions
(V=2.85V)
(with Pull Low)
(V=0V)
(with Pull High)
Unit
V
V
mA
uA
V
V
uA
uA
V
V
Ω
Ghz
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