commit 02688ca24c2016178450a454ea1551bbedb23078
author Luis Henrique Rodovalho <luishenriquerodovalho@gmail.com> Fri Dec 31 15:25:40 2021 -0300
committer Luis Henrique Rodovalho <luishenriquerodovalho@gmail.com> Fri Dec 31 15:25:40 2021 -0300
tree 8ed7ea1fdad68dc7adac69e119d29dfd1d7c1fb9
parent 754d41f89db86e2084887cafe49f7eae6c0bf9ff
parent 0477edd4d9785df7f310b491299188bb9f8851f5

Layout added

README.md

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-# sky130sbcs
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+A <b>resistorless self-biased current source</b> intended to be integrated in the efabless MPW4. </br>
+
+
+Table of contents
+==============================
+<!--ts-->
+  * [Summary](#Summary)
+  * [Description](#Description)
+    * [Schematics and Layouts](#Schematics-and-Layouts)
+    * [Simulation Results](#Simulation-Results)
+  * [Team Members](#Team-Members)  
+  * [References](#References)
+<!--te-->
+
+---
+Summary
+=======
+
+A resistorless self-biased current source based on [1] using series-parallel current mirrors [2]
+
+### Target Performance Summary
+
+| Specifications        | -                            |
+| :---                  | :---                         |
+| VDD                   | 1.0-1.8 V                    |
+| Total current         | 3.50 &mu;A                   |
+| Output current        | 0.27 &mu;A                   |
+| Temperature stability | 0.5 %/V                      |
+| Supply stability      | 1160 ppm/°C                  |
+| Area                  | 100 x 60 &mu;m²              |
+
+---
+Description
+===========
+
+### Schematics and Layouts
+---
+![image](./docs/circuits/sbcs.png)
+
+Self-biased current source circuit diagram
+
+### Simulation Results
+
+#### TT corner
+![image](./docs/plots/vdd_tt_io.png)
+![image](./docs/plots/vdd_tt_psrr.png)
+
+Status and Issues
+============
+
+* Documentation is extremely incomplete.
+
+Team members
+============
+
+**Ph.D. Luís Henrique Rodovalho (Rodovalho)**
+| [luishenriquerodovalho@gmail.com](mailto:luishenriquerodovalho@gmail.com?subject=Hi% "Hi!") <img width="15" src="https://cdn-icons-png.flaticon.com/128/2089/2089181.png" alt="email"> | 
+
+References
+==========
+
+[1] Serra-Graells, Francisco, and Jose Luis Huertas. "Sub-1-V CMOS proportional-to-absolute temperature references." IEEE Journal of Solid-State Circuits 38.1 (2003): 84-88.
+
+[2] Arnaud, Alfredo, Rafaella Fiorelli, and Carlos Galup-Montoro. "Nanowatt, sub-nS OTAs, with sub-10-mV input offset, using series-parallel current mirrors." IEEE Journal of Solid-State Circuits 41.9 (2006): 2009-2018.
+
+