参数

规范

芯片

MTK3339

接收频段

L1 频段为1575.42 MHz, C/A 码, 80通道

灵敏度

 跟踪灵敏度：                            -165dBm

捕获灵敏度：                         -148dBm(cold)/-163dBm(hot)

定位精度

范围 <   5   M  (开阔天空)

速度： 0.1m/s

定位时间

冷启动：                   36s (开阔天空)

温启动：                   36s

热启动：                     1s

重新获取：                  < 1s

功耗

跟踪：                     18mA@3.3VTypical

捕获：                  25mA@3.3V

导航数据更新频率

1Hz

使用范围

海拔：                   最高18,000m

速度：             最大 515m/s

重力加速度：               小于4g

支持的协议

NMEA 0183 Ver.3.0   波特率:9600bps

                   1Hz: GGA,GSA,GSV,RMC

Pin No.

Pin name

I/O

Description

Remark

1

RF_IN

I

GPS Signal Input

50?@1.57542GHz

7

BOOTSEL

I

Boot mode set

Leave open if not used

13

RESET

I

Module Reset (Active Low)

Leave open if not used

16

NC

No Connection

18

NC

No Connection

20

1PPS

O

One pulse per second.

Leave Open in not used

25

NC

No Connection

27

NC

No Connection

30

TXA

O

UART Serial Data Output.

NMEA Protocol

31

RXA

I

UART Serial Data Input.

NMEA Protocol

5

VBAT

P

RTC and backup SRAM power

May be connect to Battery

11

VCC

P

Module Power Supply

Must be connect to +3.0-3.3V

2,3,4,35,36,

RF_GND

P

Ground

6,8,9,10,12,

14,15,17,19,21,22,23,24

26,28,29,33

VCC_GND

P

Ground