CXD2951GA-2 Просмотр технического описания (PDF) - Sony Semiconductor
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CXD2951GA-2 Datasheet PDF : 26 Pages
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CXD2951GA-2
Performance
Baseband
• Tracking sensitivity: –152dBm (average) or less
• Acquisition sensitivity: –139dBm (average) or less in Normal mode
–150dBm (average) or less in High sensitivity mode
∗ Reference data using the Sony's reference board when using both an antenna of 0dBi and a RF amplifier
with NF ≤ 2dB, 25dB gain.
• TTFF (Time to First Fix):
Time until initial position measurement after power-on with the following conditions:
Cold Start (without both ephemeris and almanac time): 50s (average) / 60s (95% possibility)
Warm Start (without ephemeris but with almanac time): 35s (average) / 40s (95% possibility)
Hot Start (with both ephemeris and almanac time): 2s (minimum) / 6s (95% possibility)
∗ Reference data with elevation angle of 5° or more and no interception environment with satellite powers
≥ –130dBm. (Not in High sensitivity mode)
Note) "95% possibility" means "position time with 95% possibility".
• Positioning accuracy:
2DRMS: approx. 5m
∗ Reference data with elevation angle of 5° or more and no interception environment with satellite powers
≥ –130dBm.
• Measurement data update time: 1s
• Power consumption:
50mW (average) while position calculating with tracking satellites in low power mode
120mW (average) while position calculating with acquiring and tracking satellites
∗ Reference data using the Sony's reference board when the reference clock input is 18.414MHz, and its
amplitude is 3.3V swing.
• 1PPS output
1µs or less precision, 1PPS outputs from ECLKOUT (Pin 97).
Note) These values are not guaranteed, depending on the conditions.
Radio
• Total Gain (typ.):
100dB
• Noise figure (typ.):
8dB
• Synthesizer phase noise (typ.):
–70dBc/Hz (10kHz)
–80dBc/Hz (100kHz)
• PLL spurious (typ.):
–45dBc (inside fosc ±1.023MHz)
–55dBc (outside fosc ±1.023MHz)
Note) These values are not guaranteed.
–2–
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