Quectel EC25 Hardware Design

LTE Module Series
EC25 Mini PCIe Hardware Design
EC25_Mini_PCIe_Hardware_Design Confidential / Released 33 / 42
XTRA file contains predicted GPS and GLONASS satellites coordinates and clock biases valid for up to 7
days. It is best if XTRA file is downloaded every 1-2 days. Additionally, EC25 Mini PCIe can support
standard NMEA-0183 protocol and output NMEA messages with 1Hz via USB NMEA interface.
EC25 Mini PCIe GNSS engine is switched off by default. You must switch on it by AT command. Please
refer to document [3] for more details about GNSS engine technology and configurations. A passive
antenna should be used for the GNSS engine.
4.6. ESD Characteristics
The following table shows the ESD characteristics of EC25 Mini PCIe.
Table 21: ESD Characteristics of EC25 Mini PCIe
4.7. Current Consumption
The following tables describe the current consumption of EC25 Mini PCIe series module.
Table 22: Current Consumption of EC25-A Mini PCIe
Parameter
Description
Conditions
Typ.
Unit
I
VBAT
Sleep state
AT+CFUN=0 (USB disconnected)
3.6
mA
WCDMA PF=64 (USB disconnected)
4.4
mA
WCDMA PF=128 (USB disconnected)
3.8
mA
LTE-FDD PF=64 (USB disconnected)
5.9
mA
Part
Contact Discharge
Air Discharge
Unit
Power Supply and GND
+/-5
+/-10
kV
Antenna Interface
+/-4
+/-8
kV
USB Interface
+/-4
+/-8
kV
USIM Interface
+/-4
+/-8
kV
Others
+/-0.5
+/-1
kV
Quectel
Confidential

Quectel EC25 Specifications

General

Category	LTE Module
LTE TDD	B38/B40/B41
WCDMA	B1/B5/B8
GSM	850/900/1800/1900 MHz
Data rates	LTE Cat 4: 150 Mbps DL/50 Mbps UL
GNSS	GPS/GLONASS/BeiDou/Galileo/QZSS
Operating Temperature	-40°C to +85°C
Form Factor	LCC
Storage Temperature	-45°C to +90°C
SIM Interface	1.8V/3.0V
Antenna Interface	Main, Diversity, GNSS
LTE FDD	B1/B3/B5/B7/B8/B20
Interfaces	USB 2.0, UART, PCM, GPIO
Operating Voltage	3.3V - 4.3V
Protocols	TCP/IP, UDP, FTP, HTTP, HTTPS
Certifications	CE, FCC, PTCRB, GCF, RCM, IC