u-blox LEA-5 Series - LEA-5 Design; LEA-5 Passive Antenna Design

LEA-5, NEO-5, TIM-5H - Hardware Integration Manual
GPS.G5-MS5-09027-A2 Released Design-in
Page 26 of 68
2.2 LEA-5 design
2.2.1 LEA-5 passive antenna design
This is a minimal setup for a PVT GPS receiver with a LEA-5 module.
USB port
Passive Antenna
Vcc
Micro
Processor
(serial)
(optional)
Backup
Battery
(optional)
+
Micro
Processor
(USB)
1
SDA2
SCL2
TxD1
RxD1
NC/VDDIO
VCC
GND
VCC_OUT
CFG_COM1/MISO
/Reserved
RESET_N
V_BCKP
Reserved
GND
GND
RF_IN
VCC_RF
V_ANT/NC
NC/MOSI/CFG_COM0
NC/SS_N/Reserved
NC/SCK/CFG_GPS0
VDDUSB
USB_DM
USB_DP
EXTINT0
TIMEPULSE
GND
GND
AADET_N/SCS1_N
/Reserved
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
LEA-5
Top View
LDO
Figure 14: Passive antenna design for LEA-5 receivers using USB port