nRF54L Power Consumption: sleep and tx power

[cd_samsara]

I have some questions regarding the power consumption for the nRF54L. 

For sleep current:

1) The summary table shows 96kB RAM retention w/ GRTC is 2.0uA, but later in the sleep current table it shows 128kB w/GRTC is also 2.0uA. Is this correct? Is there no current trade-off between 128kB and 96kB RAM retention?

 

2) What if we use the LFRC instead of the LFXO, with full RAM retention + GRTC on the nRF54L10 (128kB)? Is the current consumption delta between LFXO and LFRC the same between different RAM retentions?

For TX power:

3) Can you share how this was measured? Is this the peak or is it averaged out? is this the total consumption, including MCU, or is it just the current for the Radio and I have to add 2-3mA to get the total?

[Asbjørn]

Hello Cynthia,

Q1: We haven't characterised all combinations of configurations, just a subset of normal use cases. There are results of 256k, 192k and 96k and at 128k you'd be at 2.2uA roughly speaking.

Q2: Yes, the delta between LFXO 3.1uA and LFRC at 3.7uA would be added to the setup. 

Q3: Assume you are referring to the radio RX and TX currents. They are established as an average across a set of samples. So you'll find samples with higher and samples with lower current consumption than stated, but across a few, you should see and measure the same average.

These are purely for the radio RX and TX operations. MCU would be on top if that is running while you're doing radio.

All this said, there will be variations across samples, so all currents stated are based on an average found across a set of samples.

Best regards

Asbjørn