Adc; Ldo; Table 34: Electronic Characteristics - SIM Tech SIMCom SIM5360 Hardware Design

3.15.2 ADC

SIM5360 has two dedicated ADC that is available for digitizing analog signals such as battery voltage and
so on; it is on PIN 47 and PIN 46 , namely ADC1 and ADC2 . This ADC is 15 bit
successive-approximation circuit, and electronic specification is shown in the following table.

Table 34: Electronic Characteristics

Specification
Resolution
Analog input bandwidth
Gain Error
Offset Error
Input Range
Input serial resistance
Power supply current
Normal operation
Power supply current
Off
User can introduce a signal in the ADC pin directly and use the AT command "AT+CADC" to get the raw
data which is between 0 and 32768. The data can be transformed to any type such as voltage, temperature
etc. Please refer to document [1].
Note: The input signal voltage value in ADC must not be higher than 2.2V.

3.15.3 LDO

SIM5360 has a LDO power output, namely VDD_EXT. The LDO is available and output voltage is 2.85v
by default, rated for 300mA. User can switch the LDO on or off by the AT command "AT+CVAUXS" and
configure its output voltage by the AT command "AT+CVAUXV".
Table 35: Electronic characteristic
Symbol
VDD_EXT Output voltage
I Output current
O
SIM5360_Hardware Design_V1.06
Min Typ
100
–
-2.5
-3.5
GND
2
1.5
50
Description
1.5
-
Max Unit
15 Bits
– kHz
Analog Vdd = ADC reference
+2.5 %
2.4MHz sample rate
+3.5 LSB
2.2V V
kΩ Sample and hold switch resistance
mA
200 nA
Min Typ
2.85
-
54
Smart Machine Smart Decision
Comments/Conditions
Max Unit
3.05 V
300 mA
2016-11-17