LEA-6 / NEO-6 / MAX-6 - Hardware Integration Manual
UBX-14054794
Production Information
Design-in
Page 21 of 85
Calculation of the micro strip (
Section 2.5.4
The micro strip must be 50
and be routed in a section of the PCB where minimal interference from noise
sources can be expected.
In case of a multi-layer PCB, use the thickness of the dielectric between the signal and the 1st GND layer
(typically the 2nd layer) for the micro strip calculation.
If the distance between the micro strip and the adjacent GND area (on the same layer) does not exceed 5
times the track width of the micro strip, use the “Coplanar Waveguide” model in AppCad to calculate the
micro strip and not the “micro strip” model.
2.1.2
Design considerations
For a minimal design with a u-blox 6 GPS module the following functions and pins need to be considered:
Connect the Power supply to
VCC.
VDDUSB:
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
micro strip and define the antenna supply (
V_ANT
)
7
for active antennas (internal or external power supply)
Choose the required serial communication interface (UART, USB, SPI or DDC) 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
7 options are required in your application and connect the
appropriate pins on your module
7
Only available with LEA-6 modules, but see section
for NEO-6 modules.
