Adc Interfaces - Quectel EG060K Series Hardware Design

NOTE
1. The module works as a master device pertaining to I2C interface.

4.6. ADC Interfaces

The module provides two ADC (Analog-to-Digital Converter) interfaces. Execute AT+QADC=0 command
to read the voltage value on ADC0. Execute AT+QADC=1 to read the voltage value on ADC1. See
document [4] for details about these AT commands.
For higher accuracy of ADC, the trace of ADC should be surrounded by ground.
Table 20: Pin Definition of the ADC Interface
Pin Name I/O
ADC0 AI
ADC1 AI
Table 21: Characteristics of ADC Interfaces
Parameter
ADC0 Voltage Range
ADC1 Voltage Range
ADC Resolution
NOTE
1. The input voltage of ADC should not exceed 1.875 V.
2. It is prohibited to supply any voltage to ADC pins without VBAT.
3. It is recommended to use a resistor divider circuit for ADC application.
EG060K &EG120K _Series_Hardware_Design
103
Pin No. Description
173
General-purpose ADC
interface
175
Min.
0
0
-
Typ. Max.
- 1.875
- 1.875
14 -
LTE-A Module Series
Comment
0–1.875 V.
If unused, keep them
open.
Unit
V
V
bits
53 /