Product Info

LTE Standard Module Series
EC21_Series_Mini_PCIe_Hardware_Design
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6.3. Digital I/O Characteristic
The following table shows the I/O requirements of EC21 series Mini PCIe.
Table 22: I/O Requirements
1. The PCM and I2C interfaces are 1.8 V power domain and other I/O interfaces are VCC_3V3 power
domain.
2. The maximum voltage value of V
IL
for PERST# and W_DISABLE# is 0.5 V.
6.4. Tx Power
The following tables show the conducted RF output power of EC21 series Mini PCIe module.
Table 23: Conducted RF Output Power of EC21 Series Mini PCIe
Parameter Description Min. Max. Unit
V
IH
Input high voltage 0.7 × VCC_3V3 VCC_3V3 + 0.3 V
V
IL
Input low voltage -0.3 0.3 × VCC_3V3 V
V
OH
Output high voltage VCC_3V3 - 0.5 VCC_3V3 V
V
OL
Output low voltage 0 0.4 V
Frequency Bands Max. RF Output Power Min. RF Output Power
GSM850/EGSM900 33 dBm ±2 dB 5 dBm ±5 dB
DCS1800/PCS1900 30 dBm ±2 dB 0 dBm ±5 dB
GSM850/EGSM900 (8-PSK) 27 dBm ±3 dB 5 dBm ±5 dB
DCS1800/PCS1900 (8-PSK) 26 dBm ±3 dB 0 dBm ±5 dB
WCDMA bands 24 dBm +1/-3 dB < -49 dBm
LTE-FDD bands 23 dBm ±2 dB < -39 dBm
NOTE