> 4.1 | Current Consumption during Transmit Burst

> Due to the maximum RF power level of approximately 2W, the battery discharge current is modulated at 2A (approx.) pulses of 0.577ms every 4.6ms. During the low current period, the current consumption during a GSM call is about 70mA.
> The current profile is illustrated in Figure 5 and Figure 6 The measured values refer to the GSM band 900MHz at maximum power level (PCL 5) and minimum power level (PCL 19) with a real 50Ω load. These values may increase up to 2...3A if the antenna is badly matched.
> Depending on the overall power supply resistance, the corresponding voltage drops measured at the module’s connector may reach higher values.
> Figure 5: Current consumption during voice call or GPRS Class 8 connection at PCL5
> Figure 6: Current consumption during voice call or GPRS Class 8 connection at PCL 19
> Figure 7: Current consumption during GPRS Class 10 connection at PCL5
> Figure 8: Current consumption during EGPRS Class 10 connection at PCL5
> Please note that ripple and spikes during the transmit burst depending on the noise-induced amplitude modulation as shown in Figure 7.