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Hi,
RX Sniff Mode for standard Smart RF Studio settings shows next current consumption:
1. 1.1 mA for 868 MHz; 1.2 kbit; Dev=4 kHz; RX BW = 25 kHz)
2. 0.645 mA for 868 MHz; 1.2 kbit; Dev=20 kHz; RX BW = 50 kHz)
Why wider RX bandwidth lead to lower current consumtion?
( what mechanism of this phenomenon? )
Hi
The RX bandwidt settings change the CS response time and hence the current consumption. The equations for calculating the response time is shown both in the user manual and in the RX Sniff Mode application report
BR
Siri
If you look at the excel file that is linked to from http://www.ti.com/lit/an/swra428a/swra428a.pdf you will see that the CS time is dependent on the RX BW. The internal rate of samples from the channel filter increases with higher BW due to less decimation. The CS time is the time used in Rx when nothing is on the air.