User's Manual

Smart Machine Smart Decision
SIM7100A_User Manual_V1.01 2014-12-11
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Input serial resistance 2 kΩ Sample and hold switch resistance
Power supply current
Normal operation
1.5 mA
Power supply current
Off
50 200 nA
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.
3.14.3 LDO
SIM7100A has a LDO power output, namely VDD_EXT. The LDO is available and output voltage is
2.85v by default, rated for 150mA. 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 37: Electronic characteristic
Symbol Description Min Typ Max Unit
VDD_EXT Output voltage 1.7 2.85 3.05 V
I
O
Output current - - 50 mA