User Manual
Version 1.1
2011-07-15
deRFnode and deRFgateway
dresden elektronik
ingenieurtechnik gmbh
Enno-Heidebroek-Str. 12
12 7 Dr
n
rm  n
Tel.: +49 351 31 85 00
Fax: +49 351 3 18 50 10
wireless@dresden-elektronik.de
www. r
n- l k r nik.
Page 12 of 56
BMA150
acceleration sensor
2.4V
3.6V
1  A
200  A    290  A
I  L2   2
l  min   i
n   r
1.7V
.  V
nA
---
A
MP1  2AIDRLT
m   r    r
n   r
TBD
TBD
TBD
TBD
TBD
T2  DF  41A
4M  i    ri  l Fl   h
2.7V
.  V
2   A
1  mA
2  mA
FT24  RL
B f  r AVR
4.  V
.2  V
A
1  mA
24mA
1)
radio transceiver in listening state
2)
depends on external load
5.3.2. Current consumption
Test conditions: T = 25癈, Firmware executed from Flash, no external cabling (i.e. Level
Shifter, JTAG) unless stated otherwise.
5.3.2.1.
DC-powered
The used AC/DC converter has an output voltage of 5VDC.
Table 6: HW Setup 1
Hardware setup (Condition: V
DC
= 5VDC)
Working
Slee  
1)
Idle
2)
T   
3)
Max
4)
RF
w   -1TNP2-   N    +    RF rm7
24mA
7mA
5)
1  1mA
6)
<2   mA
RFn
-1TNP2-   N    +    RF  rm7
2
A
7mA
41mA
<   mA
RFn
-2TNP2-   N    +    RF  rm7
mA
4mA
mA
<   mA
RFn
-2TNP2-   N    +    RFm
12
1   A
1  mA
2  mA
<4  mA
5.3.2.2.
Battery-powered, variable voltage
When battery powered, the current consumption does not significantly differ from the values
given above, only if using an AVR-based MCU, the current consumption sinks slightly. Re-
mark the notes on working voltage above.
5.3.2.3.
USB powered
When USB-powered, the current consumption increases to the values given above due to
USB transceiver activity: