LTE Standard Module Series
EC25 Hardware Design
EC25_Hardware_Design 21 / 130
Baseband
PMIC
Transceiver
NAND
DDR2
SDRAM
PA
PAM
LNA
Switch
ANT_MAIN ANT_DIVANT_GNSS
VBAT_BB
VBAT_RF
APT
PWRKEY
ADCs
VDD_EXT
USB (U)SIM PCM UARTsI2C
RESET_N
19.2M
XO
STATUS
GPIOs
SAW
Control
IQ Control
Duplex
SAW
Tx
PRx DRx
WLAN SDBT
SGMII
SAW
Figure 1: Functional Diagram
2.4. Evaluation Board
In order to help customers develop applications with EC25, Quectel supplies an evaluation board
(UMTS<E EVB), USB to RS-232 converter cable, earphone, antenna and other peripherals to control
or test the module. For more details, please refer to document [8].
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