u-blox LEA-5 Series - Design Considerations

LEA-5, NEO-5, TIM-5H - Hardware Integration Manual
GPS.G5-MS5-09027-A2 Released Design-in
Page 25 of 68
2.1.2 Design considerations
For a minimal design with a u-blox 5 GPS module the following functions and pins need to be considered:
Connect the Power supply to VCC.
VDDUSB
8
: Connect the USB power supply to a LDO before feeding it to VDDUSB and VCC. Or connect to
GND if USB is not used.
Assure a optimal ground connection to all ground pins of the module
Connect the antenna to RF_IN over a matching 50 Ohm micro strip and define the antenna supply
(V_ANT)
9
for active antennas (internal or external power supply)
Choose the required serial communication interface (UART, USB
8
or DDC
8
) and connect the appropriate pins
to your application
If you need Hot- or Warmstart in your application, connect a backup battery to V_BCKP
Decide whether TIMEPULSE or RESET_N
10
options are required in your application and connect the
appropriate pins on your module
8
LEA-5 and NEO-5 modules only
9
Only available with LEA-5-H, LEA-5S, LEA-5A, LEA-5T, TIM-5H
10
LEA-5 and TIM-5H modules only