Welcome Guest,Register Now
Log In

ANT Forum

Welcome guest, please Login or Register

   

CC2571 Power Consumption

Rank

Total Posts: 13

Joined 2013-09-19

PM

Hi there,

I have started to measure the power consumption of my platform and I am seeing a higher than expected active mode current consumption. My CC2571 is using the following settings:
ASYNC UART
50KBPS
TX Rate 4Hz
TX Power 2
32khz Xtal installed
VCC=3V

I measure an active mode current consumption with the channel open of around 5-6mA. This is baseline and then I see the 4Hz TX spikes on top of that.

Is that current consumption normal? I thought it should be much lower in the region of sub 1mA.
The PowerDown current is as expected in around 1uA.

void ant_powerdown (void)
   
{
      output_high 
(sleep_ant);
      
delay_ms (1);
      
output_low (suspend_ant);
   
}

   void ant_wake 
(void)
   
{
      output_high 
(suspend_ant);
      
delay_ms (1);
      
output_low (sleep_ant);
   


This are my two functions for waking and putting the device to sleep. Before sleeping I also send the CloseChannel command and after waking the device I send all the initialisation values again.

Eoin      
Avatar
RankRankRankRank

Total Posts: 662

Joined 2012-10-09

PM

Are you using the SLEEP line in your UART implementation? Proper usage of this line is essential to achieve low power operation.