Power Consumption verses Bit Rate

[rshankle]

Hi All,

I'm working on minimizing power when transmitting a small message between two nRF52832 boards.  I'm also trying to maximize range so sensitivity is important.

I noticed that I can increase range by decreasing bit rate, but I figure this will increase the transmit time.   (The message I'm sending is less than 50 bytes.)

Does anyone have reference material on power consumption verses bit rate?

Currently I have bit rate set to "NRF_ESB_BITRATE_2MPS_BLE" with the assumption that the BLE in the name means it is optimized for low power. 

Any thoughts?

thanks!

Bob

[haakonsh]

The current consumption of the radio is virtually the same at all bit rates. The time it takes to transmit a set of data is, therefore, the only factor in the current consumption. 

I believe the NRF_ESB_BITRATE_2MPS_BLE uses the same sideband specs as BLE to increase the receiver sensitivity, it has nothing to do with power optimization. 

[rshankle]

Haakonsh,

Sorry for the delay.  Thanks for the information!

Bob