LEA-6 / NEO-6 / MAX-6 - Hardware Integration Manual
UBX-14054794
Production Information
Design-in
Page 23 of 85
2.2
LEA-6 design
2.2.1
LEA-6 passive antenna design
This is a minimal setup for a PVT GPS receiver with a LEA-6 module.
USB port
Passive Antenna
Vcc
Micro
Processor
(serial)
(optional)
Backup
Battery
(optional)
+
Micro
Processor
(USB)
1
SDA2 /SPI_MOSI
SCL2 / SPI_MISO
TxD1
RxD1
NC
VCC
GND
VCC_OUT
CFG_COM1/ NC
SPI_SCS2_N /TIMEPULSE2
RESET_N
V_BCKP
Reserved
GND
GND
RF_IN
VCC_RF
V_ANT
Reserved / FWD
Reserved / SPI_SCS1_N
Reserved / SPI_SCK
VDDUSB
USB_DM
USB_DP
EXTINT0 / SPEED
TIMEPULSE
GND
GND
AADET_N
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-6
Top View
LDO
Figure 12: LEA-6 passive antenna design with USB port
Passive Antenna
Vcc
Micro
Processor
(serial)
1
SDA2 / SPI_MOSI
SCL2 / SPI_MISO
TxD1
RxD1
NC
VCC
GND
VCC_OUT
CFG_COM1/ NC
SPI_SCS2_N /TIMEPULSE2
RESET_N
V_BCKP
Reserved
GND
GND
RF_IN
VCC_RF
V_ANT
Reserved / FWD
Reserved / SPI_SCS1_N
Reserved / SPI_SCK
VDDUSB
USB_DM
USB_DP
EXTINT0 / SPEED
TIMEPULSE
GND
GND
AADET_N
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-6
Top View
Figure 13: LEA-6 passive antenna design with no USB port or backup battery
For best performance with passive antenna designs use an external LNA to increase the sensitivity up to 2
dB. See figure 12 and Figure 15
