Power Consumption verses Bit Rate

Question

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 · Accepted Answer

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 · Answer

Haakonsh, 
 Sorry for the delay. Thanks for the information! 
 Bob

Power Consumption verses Bit Rate

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