User's Manual

LTE Module Series
EC21 Hardware Design
EC21_Hardware_Design Confidential / Released 69 / 94
VBAT_RF min/max values, including
voltage drop, ripple and
spikes.
Voltage drop during
burst transmission
Maximum power control
level on GSM900
400 mV
I
VBAT
Peak supply current
(during
transmissionslot)
Maximum power control
level on GSM900
1.8 2.0 A
USB_VBUS USB detection 3.0 5.0 5.25 V
6.3. Operating Temperature
The operating temperature is listed in the following table.
Table 32: Operating Temperature
Parameter Min. Typ. Max. Unit
OperationTemperature Range
1)
-35 +25 +75 ºC
ExtendedTemperature Range
2)
-40 +85 ºC
1.
1)
Within operation temperature range, the module is 3GPP compliant.
2.
2)
Within extended temperature range, the module remains the ability to establish and maintain a
voice, SMS, data transmission, emergency call, etc. There is no unrecoverable malfunction. There
are also no effects on radio spectrum and no harm to radio network. Only one or more parameters
like P
out
might reduce in their value and exceed the specified tolerances. When the temperature
returns to the normal operating temperature levels, the module will meet 3GPP specifications again.
NOTES