Quectel RG520N-AT - ADC Interface

5G Module Series
RG520N-AT_Hardware_Design 60 / 109
Table 22: SDIO Trace Length in the Module
4.9. ADC Interface
The module provides one Analog-to-Digital Converter (ADC) interface. In order to improve the accuracy of
ADC, the trace of ADC interface should be surrounded by ground.
Table 23: Pin Definition of ADC Interface
The voltage value on ADC pin can be read via AT+QADC=<port>:
⚫ AT+QADC=0: read the voltage value on ADC0
For more details about the AT command, see document [3].
The following table describes the characteristic of the ADC interface.
Table 24: Characteristics of ADC Interface
Pin No.
Pin Name
Length (mm)
49
SDIO_DATA0
33.46
50
SDIO_DATA1
33.50
51
SDIO_DATA2
33.15
52
SDIO_DATA3
33.51
48
SDIO_CMD
34.38
47
SDIO_CLK
33.57
Pin Name
Pin No.
I/O
Description
ADC0
241
AI
General-purpose ADC interface
Name
Min.
Typ.
Max.
Unit
ADC0 Voltage Range
0
-
1.875
V