topic Re: Reg: LPC845 ADC maximum Negative Voltage to withstand. in LPC Microcontrollers

Reg: LPC845 ADC maximum Negative Voltage to withstand.

PK_1114 — Fri, 20 Oct 2023 05:35:12 GMT

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

Re: Reg: LPC845 ADC maximum Negative Voltage to withstand.

PK_1114 — Fri, 20 Oct 2023 09:07:32 GMT

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

Re: Reg: LPC845 ADC maximum Negative Voltage to withstand.

ZhangJennie — Wed, 25 Oct 2023 08:14:55 GMT

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