GPS04 Datasheet, PDF (3/12 Pages) –

BLOCK DIAGRAM
GPS04
RFIN
V_ANT
XN203
LNA
GPS RF
Front END
SAW
GPS BaseBand
TCXO
1.2 V LDO
RTC Xtal
VCC_RF
Module block schematic
RX 0
TX 0
RX1
TX1
3.3V
V_Bat
PPS
ANTENNA
The GPS04module is designed to work active antenna. Recommended active antenna should have gain of 20
~ 30dB and noise figure less than 1.2dB.
PIN Assignment
16 _GND
17 _{ANT_IN}
18 _GND
19 _{V_ANT}
20 _{VCC_RF}
21 _{V_BAT}
22
23
24
25
26
RESET
NC
NC
NC
NC
27
28
29
30
NC
NC
PPS
GND
XN934D
GND ¹⁵
GND ¹⁴
GND ¹³
12
GND
GND ¹¹
GND
NC
NC
RX1
TX1
TX0
10
9
8
7
6
5
RX0
NC
GND
VCC
4
3
2
1
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