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Author Topic: Nrf24l01+ with PA current consumption  (Read 1258 times)
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Hi! I've been successfully using nrf24l01 antennas for some time. At the moment I am making low power node, which consists of atmega328P (with arduino bootloader), nrf24l01+ antenna and temperature/humidity sensor (DHT22). Everything works perfect but I have a problem with current draw. If i use nrf24l01+ without amplifier, current consumption in sleep mode is few uA. But when I change antenna and use nrf24l01+ with PA, current consumption is 6 mA.

So my question is, is there any way to lower drawn current when using antenna with PA or do I have to use antenna without amplifier? I am using RF24 library and I turn off the radio before putting AVR in sleep mode. Everything in the above scenario is the same, I only use different antennas (with or without amplifier).

Just to be clear, this is the antenna with PA: http://www.ebay.com/itm/nRF24L01-Wireless-Transceiver-Module-PA-SMA-Antenna-MAX-distance-up-to-1KM-/160822596423?pt=LH_DefaultDomain_0&hash=item2571c61347

And this is the antenna without PA: http://www.ebay.com/itm/2pcs-2-4GHz-NRF24L01-Antenna-Wireless-Transceiver-Module-For-Microcontrol-/370736445804?pt=LH_DefaultDomain_0&hash=item56519d396c
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Hi Ph4nth0m,

I'm facing the same problem but with w/ antenna nrf24l01.
Could be possible contact you to discuss about it?

regards 
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i just found this out too... tho PA LNA versions draw significantly more during sleep. in my case nearly 9ma

im going to try cutting the power to either the whole radio module or just the PA chip via the arduino b4 sleep.
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i just found this out too... tho PA LNA versions draw significantly more during sleep. in my case nearly 9ma

im going to try cutting the power to either the whole radio module or just the PA chip via the arduino b4 sleep.

using a PNP transistor i was able to switch the radio modules VCC supply, triggered by an arduino pin.

you just have to reinitialise the radio module after each wake to reconnect it.

easy
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