power consumption of S130 (use as peripheral only) vs S110

Question

Hi there, 
 I was trying to use S110 to implement my project but found there is no more release for that after SDK 8 and I have concerns on bug fixes won't be merged back. 
 As S130 can work in dual roles (peripheral and central), I'd think just use it as peripheral to implement my project instead. 
 My question is that in terms of power consumption, what's the difference between using S110 vs
using 130 only as peripheral? 
 For S110, reportedly it consumes 3.1uA during power on low power mode. What's the corresponding figure for S130 used as peripheral only? 
 Thanks for your help,
Carl

MartinBL · Accepted Answer

Hi, 
 There is no reason to believe one is better than the other. I did a couple of measurements: 
 S110 sleep current only = 3,76uA: 
 
 S110 average over ~4.8s with advertising intervals at ~190ms = 155uA 
 
 S130 sleep current only = 3.90uA: 
 
 S130 average over ~4.8s with advertising intervals at ~190ms = 150uA: 
 
 As you can see, in sleep mode the difference is 140 nA in favour of S110. The average current over 5 seconds differ by 5 uA in favour of S130. Both differences can be attributed to measurement errors. The PPK's measurement resolution in the 0-70uA range is 200 nA and average current over 5 seconds depends for example on how many scan requests the device receives.

power consumption of S130 (use as peripheral only) vs S110

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