内容标题36

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                尺寸:33X25mm MTK ROM版本芯片 GPS單模

                GGM-3325-MTR

                Features

                n Buildon high performance, low-power

                   MediaTek MT3337 chip set

                n Ultrahigh Track sensitivity: -165dBm

                n Extremelyfast TTFF at low signal level

                n Builtin high gain LNA

                n Lowpower consumption: Max 28mA@3.3V

                n NMEA-0183compliant protocol or custom

                   protocol

                n Operatingvoltage: 3.0V to 5.0V

                n Operatingtemperature range:-40to85℃

                n PatchAntenna Size: 25x25x4mm

                n Smallform factor: 33.6x25.5x14mm

                n Communicationtype: UART/TTL

                n Wireinterface type: Audio head 4Pin, L=1250px

                n RoHScompliant (Lead-free)



                Parameter

                Specification

                Power Supply

                ?         Supply voltage:  3.0V~5.0V   Typical: 3.3V

                Power Consumption

                ?         Acquisition:  28mA @VCC=3.3V

                ?         Tracking:  25mA  @VCC=3.3V

                ?         Standby:  2.0mA  @VCC=3.3V

                ?         Backup:  15uA  @VBAT=3.3V

                Receiver Type

                ?         Code 66 search channels, GPS&QZSS L1  1575.42MHz C/A

                ?         22 simultan ous tracking channels

                Sensitivity

                ?         Tracking:    -165dBm

                ?         Re-acquisition:   -156dBm

                ?         Acquisition:    -148dBm


                TTFF (Autonomous)

                ?         Cold start:    35s  typ @-130dBm

                ?         Warm start :    30s  typ @-130dBm

                ?         Hot start :    1s  typ @-130dBm


                HorizontalPosition

                Accuracy (Autonomous)

                ?         <2.5m CEP @-130 dBm


                Update Rate

                ?         1Hz


                Accuracy of 1PPS Signal

                ?         not enabled


                Acceleration Accuracy

                ?         Without aid: 0.1m/s2


                Dynamic Performance

                ?         Maximum altitude:  18,000m

                ?         Maximum velocity:  515m/s

                ?         Acceleration: 4G


                UART Port

                ?         UART Port: TXD and  RXD

                ?         Supports baud rate  from 4800bps to 115200bps, 9600bps by default

                ?         UART port is used for  NMEA output, MTK proprietary

                                     commandsinput


                Temperature Range

                ?         Normal operation: -40°C ~ +85°C

                ?         Storage temperature:  -45°C ~ +125°C


                Physical Characteristics

                ?         Size: 22.1±0.20×22.1±0.20×8.6±0.20mm

                ?         Weight: Approx. 8.6g



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