Quectel EC20 User Manual

LTE Module Series
EC20 Mini PCIe Hardware Design
EC20_Mini_PCIe_Hardware_Design Confidential / Released 29 / 36
4.3. IO Requirements
The following table shows the IO requirements of EC20 Mini PCIe.
Table 14: IO Requirements
1. The PCM and I2C interface belong to 1.8V power domain, and other IO interfaces belong to 3.3V
power domain.
2. The maximum value of V
IL
for PERST# signal and W_DISABLE# signal is 0.5V.
4.4. RF Characteristics
The following tables show output power and receiving sensitivity of conducted RF of EC20 Mini PCIe
module.
Table 15: Output Power of Conducted RF
Parameter
Description
Min.
Max.
Unit
V
IH
Input High Voltage
0.7*VDDIO
VDDIO+0.3
V
V
IL
Input Low Voltage
-0.3
0.3*VDDIO
V
V
OH
Output High Voltage
VDDIO-0.5
VDDIO
V
V
OL
Output Low Voltage
0
0.4
V
Frequency
Max.
Min.
GSM850/EGSM900
33dBm±2dB
5dBm±5dB
DCS1800/PCS1900
30dBm±2dB
0dBm±5dB
GSM850/EGSM900(8-PSK)
27dBm±3dB
5dBm±5dB
DCS1800/PCS1900(8-PSK)
26dBm±3dB
0dBm±5dB
UMTS B1/B2/B4/B5/B8
24dBm+1/-3dB
<-50dBm
LTE B1/B2/B3/B4/B5/B7/B8/B12/B17/B20
23dBm±2dB
<-44dBm
NOTES
Quectel
Confidential

Quectel EC20 Specifications

General

Brand	Quectel
Model	EC20
Category	PCI Card
Language	English