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11 years, 9 months ago.
minimum input voltage
what is the minimum input voltage that the mbed nxp lpc1768 can reliably detect a signal at?
2 Answers
11 years, 9 months ago.
I'm talking about analog. i am getting a 0.05 volt signal for a duration of about 2 ms.
The ADC is 12-bit, so 4096 divisions, over 3.3V. That means the smallest values it should be able to detect is roughly 0.001V. Now that probably wont be too reliable, however your value is a factor 50 above that, you should be fine.
That said, do have a look at: http://mbed.org/users/chris/notebook/Getting-best-ADC-performance/
posted by 18 Mar 2013
11 years, 9 months ago.
I assume you minimum voltage required for a signal to be detected as high? That is specified as 0.7*Vdd = 2.3V.