u-blox SARA-G3 Series User Manual

SARA-G3 series - System Integration Manual
UBX-13000995 - R06 Objective Specification System description
Page 30 of 218
= 8 slots/bursts), so with a 1/4 duty cycle, according to GSM TDMA. If the module is in GPRS
connected-mode in 1800 or 1900 MHz bands, consumption figures are lower than in the 850 or 900
MHz band, due to 3GPP Tx power specifications.
Figure 6Figure 6 reports the current consumption profiles in GPRS connected-mode, in the 850 or 900
MHz bands, with 2 slots used to transmit and 1 slot used to receive.
Time [ms]
RX
slot
unused
slot
unused
slot
TX
slot
TX
slot
unused
slot
MON
slot
unused
slot
RX
slot
unused
slot
unused
slot
TX
slot
TX
slot
unused
slot
MON
slot
unused
slot
GSM frame
4.615 ms
(1 frame = 8 slots)
Current [A]
60-120mA
GSM frame
4.615 ms
(1 frame = 8 slots)
1.5
1.0
0.5
0.0
2.0
60-120mA
10-40mA
200mA
Peak current
depends on
TX power
1600 mA
Figure 6: VCC current consumption profile versus time during a GPRS connection (2 TX slots, 1 RX slot)

u-blox SARA-G3 Series Specifications

General

Brand	u-blox
Model	SARA-G3 Series
Category	GSM/GPRS Modules
Language	English