A resistorless self-biased current source intended to be integrated in the efabless MPW4.
Table of contents
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 μA |
| Output current | 0.27 μA |
| Temperature stability | 0.5 %/V |
| Supply stability | 1160 ppm/°C |
| Area | 100 x 60 μm² |
Description
Schematics and Layouts
Self-biased current source circuit diagram
Simulation Results
TT corner
Status and Issues
- There are no schematics. All simulations are from extracted netlists.
- This project also contains a CMOS only voltage reference based on the main current-source, but there is no documentation available.
- There is a second version of the same current source, but using high-voltage transistors. Only the layer types were replaced.
- Documentation is extremely incomplete.
Team members
Ph.D. Luís Henrique Rodovalho (Rodovalho) | luishenriquerodovalho@gmail.com |
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.