waferchips_vishnu
Newbie level 4
Hi,
I am using nRF52840 SoC for my application. A biopotential AFE MAX30003 and Toshiba's 4Gbit embedded flash is used to save the data.
I have enable the lead off detection and RtoR interrupt in MAX30003. Myapplication reads the FIFO buffer when it gets 18 samples by sensing the interrupt generated. I am storing the data to a buffer and when the buffer reached 2Kbit, I write it into embedded NAND flash. This is the overall flow of my application. I am expecting around 3mA average current for the whole process. But right now I see around 9mA average current. I use Nordic Power Profiler Kit to measure the current.
Everything works in 1.8V. I use a battery charge controller, TPS62740(step down converter), nRF52840, MAX30003, TC58CYG2S0HRAIG.
I am attaching the schematic for reference. Is there anything I should consider in hardware design?
Please help.
I am using nRF52840 SoC for my application. A biopotential AFE MAX30003 and Toshiba's 4Gbit embedded flash is used to save the data.
I have enable the lead off detection and RtoR interrupt in MAX30003. Myapplication reads the FIFO buffer when it gets 18 samples by sensing the interrupt generated. I am storing the data to a buffer and when the buffer reached 2Kbit, I write it into embedded NAND flash. This is the overall flow of my application. I am expecting around 3mA average current for the whole process. But right now I see around 9mA average current. I use Nordic Power Profiler Kit to measure the current.
Everything works in 1.8V. I use a battery charge controller, TPS62740(step down converter), nRF52840, MAX30003, TC58CYG2S0HRAIG.
I am attaching the schematic for reference. Is there anything I should consider in hardware design?
Please help.