4 Detailed Technical Description
4.1 Electronic
4.1.1
RF solution to be implemented
The chosen AMPAK AP6256 Module which is a total solution for a combination of Wi-Fi + BT
technologies.
For WI-FI, it supports 802.11a/b/g/n/ac
For Bluetooth, it complies with Bluetooth core specification V5.0
Bluetooth power level is class 2:
BDR output power is 6dBm
EDR output power is 6dBm
LE output power is 6dBm
This module integrates the baseband, the RF amplifier, and power regulator.
It needs externally:
a bandpass antenna
an accurate 37.4MHz source (crystal with less than 20ppm tempe aging)
A standard slow clock at 32.768 KHz for low power modes (+/-30ppm), which will be
provided by the CPU. This clock MUST stay active continuously, even in SLEEP mode,
where it is mandatory to wake up.
Some passive components.
We implement the reference design from AMPAK Instrument, and with minor adaptation to our
needs (test probe headers, some filter capacitor
…)
4.1.2
Schematic
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