DWM1001 Datasheet

© Decawave Ltd 2017

Subject to change without notice

Version 1.5

Page 13

Figure 2 shows DWM1001’s power profile when running a typical Two-Way ranging communication scheme. In

this specific case, the PANS R2 tag application is running on the DWM1001.

The tag is in low-power mode, and two-way ranging with 4 anchors. The deep-sleep current occurs while the tag

is sleeping with only the RTC and accelerometer active.

Once awake, the tag transmits at its allocated time in the TDMA-slotting and awaits the anchors responses. This

can be observed as 1 transmission followed by 4 receives and a final transmit . After this is completed, the tag

spends some time computing its location, before returning to sleep. The total time awake is dependent on the

number of anchors within range of the tag. For more details on the system operation, see the DWM1001 System

Overview document[9].

Please note that the best achievable deep sleep current is around 12-15

μA, when limiting peripheral use to the

RTC clock and keeping the microcontroller in deep sleep.

Figure 2: Power consumption running PANS R2 tag application

Single Sided Two-Way Ranging scheme

0.00

20.00

40.00

60.00

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2.09

2.092

2.094

2.096

2.098

2.1

Time (s)

Deep Sleep 24 μA

Wake-up 6 mA

Idle 13 mA

Transmit Tx

112 mA peak

81 mA average

Receive Rx

150 mA peak

132 mA average