I need to measure full power consumption of nrf52, on PCA10040 from... a 5V source (because including some other 5V devices).
I measure it from 5V pin and not usb plug.
I cut SB29, to remove atmel processor leak. But I stil get around 4.5mA leakage (all led off), I don't know where from, and it seems huge for a regulator. (around 5mA +peaks while advertising)
Shoud I cut some other lines to only keep the regulator and nrf52 powered?
thanks. This is a new test from nordic uart exemple sdk15.3, 1st graph: advertising, 2nd graph: connected, sb29 cut, powered through 5V.
I think it's still far higher than what I should expect, it's nearly close to an Arduino x) . On the board shematics, there is a 300ma 3.3V AP7333-33SAG-7 regulator that shouldn't use so much current. So I'm missing something, but what?
ps: the power seems quite noisy, I don't know why, but I checked with a resistor and it's still well calibrated, no offset. It's missing some peak, as read frequency is 2ksample pr second, which doen't seems enough to see everything.
thanks. This is a new test from nordic uart exemple sdk15.3, 1st graph: advertising, 2nd graph: connected, sb29 cut, powered through 5V.
I think it's still far higher than what I should expect, it's nearly close to an Arduino x) . On the board shematics, there is a 300ma 3.3V AP7333-33SAG-7 regulator that shouldn't use so much current. So I'm missing something, but what?
ps: the power seems quite noisy, I don't know why, but I checked with a resistor and it's still well calibrated, no offset. It's missing some peak, as read frequency is 2ksample pr second, which doen't seems enough to see everything.
