Evaluation Board - Quectel EG91 Series Hardware Design

VBAT_RF
VBAT_BB
PWRKEY
RESET_N
STATUS
NETLIGHT

2.4. Evaluation Board

Quectel provides a complete set of evaluation tools to facilitate the use and testing of EG91 series module.
The evaluation tool kit includes the evaluation board (UMTS&LTE EVB), a USB to RS-232 converter
cable, an earphone, antennas and other peripherals. For more details, see document [1].
8 GNSS antenna is supported on EG91-AUX/-EX/-NA/-NAL/-NAX/-NAXD/-NAXDL/-VX. Rx-diversity antenna is supported
on EG91-E/-EX/-NA/-NAL/-NAX/-NAXD/-NAXDL/-VX, and is not supported on EG91-AUX.
EG91_Series_Hardware_Design
ANT_MAIN
PAM
PA
Tx
PMIC
Control
19.2M
XO
VDD_EXT
USB
Figure 1: Functional Diagram
LTE Standard Module Series
ANT_GNSS ANT_DIV
SAW
Duplexer
LNA
SAW
PRx DRx
GPS
Transceiver
IQ Control
Baseband
(U)SIM1 (U)SIM2
PCM I2C
8
Switch
SAW
NAND
DDR2
SDRAM
SPI UART GPIOs
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