| commit | 0903ce26d3114d9f1f8f01fcaa0a9db24d329fb3 | [log] [tgz] |
|---|---|---|
| author | Jorge Marin <jorge.marin.ndez@gmail.com> | Fri Dec 31 20:09:10 2021 -0300 |
| committer | Jorge Marin <jorge.marin.ndez@gmail.com> | Fri Dec 31 20:09:10 2021 -0300 |
| tree | 572c9e849fc4547f5e6eb3e79c51b26e39c3b740 | |
| parent | 6043c956289b4a512058af52016e97088db54984 [diff] |
Full top cell connection to wrapper upload
PLL-BASED CAPACITIVE SENSOR INTERFACE
This project involves the design of a capacitive sensor-to-digital converter using time-based circuit techniques. It uses basic digitally-oriented building blocks (two oscillators, a D-flipflop and a feedback loop including a capacitive element and a switch) to convert input capacitive values into digital single bit traces in the time domain. The basic block diagram can be seen below:
The architecture has been tested for a DC sweep of input capacitive values. Example output trace values for different capacitance inputs are shown below:
The characteristic plot for an average window of 10us is seen below:
Refer to README for this sample project documentation.