EVK-M8BZOE User Guide
UBX-17053592 - R03
Early Production Information
Measuring current consumption
Page 20 of 33
6
Measuring current consumption
6.1
Basic measurements with the shunt resistors
Figure 8: EVK-M8BZOE board measuring the ZOE-M8B VCC current
On the EVK-M8BZOE there is a 1.8 V LDO supplying the ZOE-M8B main supply (
VCC
). At the input of that LDO is
a 1
Ω
current measurement shunt resistor placed in between J7 pin 1 and pin 2, see Figure 8.
A super capacitor charged to 3.3 V supplies the V_BCKP for ZOE-M8B. In between the super capacitor and
V_BCKP
there is a 100
Ω
current measurement shunt resistor placed in between J6 pin 1 and pin 2.