| commit | 4a8aa520cdad9a73528edca2e279659b83df3549 | [log] [tgz] |
|---|---|---|
| author | chrische-xx <christoph-weiser@gmx.de> | Tue Nov 16 22:23:10 2021 +0100 |
| committer | GitHub <noreply@github.com> | Tue Nov 16 22:23:10 2021 +0100 |
| tree | 47366a77a6a015c116ba168e1e8fa43f0c0e5358 | |
| parent | 8b009446714e26fc91eb15e3cd5705176ff8ab10 [diff] |
Create README.md
This is a mixed-mode project featuring a 8-bit SAR-ADC, with offset calibration. The logic section is synthesized using the openlane digital flow.
The adc is composed of a top-plate sampled CDAC, with a capacitor array of mimimum sized MIM caps.
The comparator is a single-stage regenerative comparator, with a MOM array for trimming ADC offset.
The layout is created using magic as a pcell generator and drc checker, while the connection of the design is done using klayout.
The simulation is carried out using ngspice using the mixed-mode xspice capabilities. The digital section is synthesized using yosys that can then be bridged to/from the analog section.
The Schematics are created using xschem, which also serves as the simulation framework. 
The SAR schematic: 
The simulation output can then be viewed in both analog and digital domain.
Digital waveforms displayed using GTKWave 
Analog waveforms displayed using Gnuplot in interactive mode. 