LTE Standard Module Series
EC200T Series Hardware Design
EC200T_Series_Hardware_Design 52 / 90
Make sure the adjacent trace spacing is 2 times of the trace width and bus capacitance is less than
15 pF.
“*” means under development.
“①”means only QuecOpen scheme support
3.14. ADC Interfaces
The module provides two analog-to-digital converter (ADC) interfaces. AT+QADC=0 can be used to read
the voltage value on ADC0 pin. AT+QADC=1 can be used to read the voltage value on ADC1 pin. For
more details about these AT commands, see document [2].
In order to improve the accuracy of ADC, the trace of ADC should be surrounded by ground.
Table 19: Pin Definition of ADC Interfaces
Pin Name Pin No. Description Comment
ADC1 44 General-purpose ADC interface If unused, keep it open.
ADC0 45 General-purpose ADC interface If unused, keep it open.
The following table describes the characteristic of the ADC function.
Table 20: Characteristic of the ADC
Parameter Min. Typ. Max. Unit
ADC1 Voltage Range 0 VBAT_BB V
ADC0 Voltage Range 0 VBAT_BB V
ADC Resolution 12 bits
NOTE
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