Is lowest power consumption of 1.2uA possible using nrf52832 & SYSTEM_ON (s132, SDK17) for GATTS - Central

Question

Hi nRF community, 
 I have a question regarding the lowest power consumption ever possible with nRF52832 chip. 
 
 I'm experimenting with power consumption using nRF52832 DK (PCA10040 1.2.1), talking to another nRF52832DK. 
 I run a central (based on GATTS example) scanning for my peripheral, I use SDK17.1 + S132. 
 The SDK is configured to have no logs and external interfaces, and most of the peripherals are disabled + I use DCDC. 
 After the BLE initialization is complete I set up the interrupt event for GPIOTE. 
 The entire thing is configured and run's properly for the BLE piece but I want it to have a smaller consumption while I'm in idle state (during __WFE()). 
 Before entering the main loop I call " sd_power_mode_set(NRF_POWER_MODE_LOWPWR) " function and basicly wait for an event on the interrupt to start scanning. 
 Currently according to nRF PPK2 I'm consuming around 18 microamps, but the question is can I get it 10 times smaller, like 1.2 ~ 2 uA (microamps)? 
 What other peripherals I can disable if I use SoftDevice and BLE ? 
 
 Regards, 
 Dmytro.

dmytro.m · Answer

Hi Edvin. 
 I have conducted the test with GPIOTE_CONFIG_IN_SENSE_LOTOHI(false) and got some consumption reduction but it was still at around 15 micro amps. 
 I intended to get the better current readings for my nRF52832 DK as those were to noisy and attached my DUT to a LiPo battery to see if any difference and I was amazed seeing the 1.9 uA consumption. So it turns out when nRF DK runs on a micro USB cable it consumes significantly more, compared to a battery powered version. 
 I didn't got my 1.2 uA, but I'm pretty happy with 1.9 uA consumption, it fits my needs, thanks for the clue with the GPIOTE low accuracy config, it did worked, it have increased the interrupt processing time slightly but still fit my timing requirements, so it is solved. The ticket can be closed. Thank You !!! 
 Regards, Dmytro.