NRF8001 dc/dc converter enabled schematic

RE: NRF8001 dc/dc converter enabled schematic

TIE Fighter — Fri, 13 Sep 2013 03:10:09 GMT

I think the best way to squeeze every bit of battery may be to use the DC-DC and the 32Khz on the design. Use the DC-DC with 32KHz internal RC until the battery voltage hits about 2.3v on the battery, after this the DC-DC is not efficient so then switch to a Setup that uses the 32MHz external crystal without the DC-DC. You should be able to use the ACI command Battery level measure the battery voltage. You will need to modify the Setup on the fly to switch from DC-DC, 32KHz RC to no DC-DC, 32KHz external crystal, or have 2 Setups that you can switch between. The DC-DC and 32Khz components can be mounted without any problem at the same time.

RE: NRF8001 dc/dc converter enabled schematic

willi — Fri, 23 Aug 2013 13:42:41 GMT

That's the impedance matching network before the antenna

RE: NRF8001 dc/dc converter enabled schematic

Hisham — Fri, 23 Aug 2013 06:40:17 GMT

Please if some one can explain what is the role of L1, L2 and L3, C5 and C6?

RE: NRF8001 dc/dc converter enabled schematic

Hisham — Thu, 22 Aug 2013 08:20:46 GMT

Thanks ole,

In case i am trying to reduce the power consumption as much as possible, so what is recommended to use dc/dc converter enabled and use internal oscillator, or don't use dc/dc converter and use external crystal?

RE: NRF8001 dc/dc converter enabled schematic

Ole Morten — Thu, 22 Aug 2013 07:38:23 GMT

You should not have both a crystal and the DC/DC components on your board. This design is done like that just to show how both should be done in one drawing.

If you want to use the DC/DC, you should use another 32 kHz clock source than a crystal, and if you want to use a crystal, there is no reason to mount the DC/DC components.