CXD2951GL-4 Просмотр технического описания (PDF) - Sony Semiconductor

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CXD2951GL-4

Single Chip GPS LSI

Sony Semiconductor 

CXD2951GL-4

Performance

Baseband

‹ Tracking sensitivity: –152dBm (average) or less

‹ Acquisition sensitivity: –139dBm (average) or less in Normal 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): 40s (average) / 50s (95% possibility)

Warm Start (without ephemeris but with almanac time): 33s (average) / 40s (95% possibility)

Hot Start (with both ephemeris and almanac time): 2s (minimum) / 3s (95% possibility)

* Reference data with elevation angle of 5° or more and no interception environment with satellite powers

≥ –130dBm.

Note) “95% possibility” means “position time with 95% possibility”.

‹ Positioning accuracy:

2DRMS: approx. 2m

* Reference data with elevation angle of 5° or more and no interception environment with satellite powers

≥ 30dBm.

‹ 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.

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