Reg: LPC845 ADC maximum Negative Voltage to withstand.

[PK_1114]

Hai,

What is the maximum allowable negative voltage on the ADC Pin in LPC845 Micro controller operating on the +3.3V.

Thank You,

B Pavan Kumar  

[ZhangJennie]

Hi PK_1114 

According to datasheet, ADC anolog input limit is as below

It is recommended to connect an overvoltage protection diode between the analog input pin and the voltage supply pin.

Have a nice day,

Jun Zhang

[PK_1114]

Hi,

Is there any Reverse Protection in the LPC845 ADC pin, if there what is it voltage tolerance. I need to give the Sinusoidal wave to the ADC.

Thank You,
B Pavan Kumar