SARA-G3 and SARA-U2 series - System Integration Manual
UBX-13000995 - R08
Objective Specification
System description
Page 27 of 188
1.5.1.5
VCC current consumption in fixed active-mode (power saving disabled)
Power saving configuration is by default disabled, or it can be disabled using the appropriate AT command (see
[3], AT+UPSV command). When power saving is disabled, the module does not
automatically enter idle-mode whenever possible: the module remains in active-mode.
The module processor core is activated during active-mode, and the 26 MHz reference clock frequency is used.
Figure 13 roughly describes the current consumption profile of SARA-G300 and SARA-G310 modules when the
EXT32K
input pin is fed by external 32 kHz signal with characteristics compliant to the one specified in
SARA-G3
series
Data Sheet
[1], or by the
32K_OUT
output pin provided by these modules, when power saving is disabled.
The module is registered with the network, active-mode is maintained, and the receiver and the DSP are
periodically activated to monitor the paging channel for paging block reception.
ACTIVE MODE
60-120 mA
0.47-2.12 s
Paging period
Time [s]
Current [mA]
100
50
0
Time [ms]
Current [mA]
100
50
0
3-5 mA
60-120 mA
RX
Enabled
20-40 mA
DSP
Enabled
3-5 mA
3-5 mA
Figure 13: VCC current consumption profile versus time of the SARA-G300 / SARA-G310 modules (with the EXT32K input pin fed
by proper external 32 kHz signal or by 32K_OUT output pin), when registered with the network, with power saving disabled:
the active-mode is always held, and the receiver and the DSP are periodically activated to monitor the paging channel
