A7600E-H CAT4 Series-PCIE Hardware Design V1.01
3 Interface Application
3.1 Power Supply
The recommended power supply voltage of A7600E-H CAT4 Series-PCIE is 3.8V.
When the module is at the maximum power in GSM TX mode, the peak current can reach 2A.
It is recommended to place two 0.1/1uf capacitors close to VBAT. Two capacitors of 33 / 10PF are added to improve the RF performance and system stability. Add 300-400uf voltage stabilizing capacitor (tantalum capacitor is recommended to enhance the power supply transient response ability in case of sudden current). It is recommended that the width of the VBAT trace between the power supply on the PCB and the module is at least 2mm.
Table 4 : VCC pins electronic characteristic
Symbol Parameter Min Type Max Unit
I
VCC(A7600E-H CAT4 Series-PCIE(A)D) Power supply voltage
VCC(A7600E-H CAT4 Series-PCIE(A))
VCC
Power supply voltage
3.0 3.3
3.4 3.8
Supply current capability - 2
3.6 V
4.2 V
- A
3.2 Power on/PERST#
3.2.1 Power on
A7600E-H CAT4 Series-PCIE automatically power on when PCIE VCC powered.
Power domain （ VBAT ）
Module
VBAT
50K
PWRKEY
1K
Logic circuit
0 Ω
Figure 4 ： Power on Reference Circuit www.simcom.com 16 / 46
