Low Power Consumption nRF8001

[jamilaaria]

Hi guys,

Do you have any suggestions on how I can lower the power consumption. I am currently connecting - sending data - disconnecting.

I have the following set the parameters as: Min/Max Interval = 15/15, Slave Latency = 0, Timeout = 3000 ms.

Thanks!

[jamilaaria]

For the previous graph, I was using a multimeter that gets the average current.

Also, I tried varying and increasing the slave latency, but it seemed that the current consumption was much higher. I was expecting it to be lower. Is this what's expected?

Connection Interval (15ms/15ms)
	Slave Latency
Cycle Time	0	10	20
10 s	0.19414685	0.190959527	0.22098695
30 s	0.056611663	0.064026546	0.06247249

[run_ar]

It's not possible to measure the current properly using a multimeter while the radio is active as the multimeter is to slow. For current measurements during sleep it is ok. For accurate current measurements you need a dcdc power analyser, or similar. Our PPK is also an option.

I am not sure what your table is showing. The current consumption calculator will give an estimate based on your use case.

[jamilaaria]

I see, thanks for the suggestion. I will try that when I measure again.

As for the table, it shows the average current (mA)  consumption when I set slave latency = 10 and connection interval min=15ms max=15ms and I measure 0.194mA. I increased the slave latency to 10 and 20 and you can see the average current consumption accordingly.

As mentioned in my previous replies, I seem to be getting higher average current consumption (offset of about ~100uA) compared to the current consumption calculator. 

[run_ar]

Are you sure you are keeping the input pins of the nRF8001 at a defined state all the time? If the application mcu leaves one of those floating it would typically draw around 100µA.