LPC1768 VS LPC11U24

10 Jul 2012

Hello.

I am pretty new to the forums/comments around here but I have a question here. Does "mbed NXP LPC11U24" have any problems with noise at the AnalogIn Pins (p15-p20)? I have been using "mbed NXP LPC1768" for awhile and the noise problems at the AnalogIn Pins (p15-p20) are pretty tough to resolve. Thus, I might consider switching over to using "mbed NXP LPC11U24" if there are little or no noise problems at the AnalogIn Pins.

Hope I am able to get a reply soon. Thank you.

10 Jul 2012

Unless your goal is, say, 6 bits of resolution or so, you'll need hardware analog filtering or digital algorithm filtering. Assuming your signal itself is sufficiently noise free and the grounding is proper.