Showing posts with label analog design. Show all posts
Showing posts with label analog design. Show all posts

Nov 22, 2021

[paper] ACM Model for CMOS Analog Circuits Hand Design

Ademirde Jesus Costaab, Eliyas Mehdipourb, Edson PintoSantanab,
and Ana Isabela Araújo Cunhab
Application of Improved ACM Model to the Design by Hand of CMOS Analog Circuits
Microelectronics Journal
Available online 16 November 2021, 105309
DOI: 10.1016/j.mejo.2021.105309
   
a Instituto Federal da Bahia, Santo Amaro, Brazil
b DEEC, Escola Politécnica, Universidade Federal da Bahia, Salvador, Brazil


Abstract: This work aims to provide solutions and perspectives for CMOS analog designers by reducing the time spent in iteratively dimensioning the devices and simulating the circuits. For this purpose, by-hand design methodologies for a few analog cells are proposed employing a MOSFET compact model which has been earlier improved by adding sub-models for some second order effects. A semiempirical sub-model and characterization method is presented for the Early voltage, thus enhancing the set of model equations for hand calculations. The accomplishment of several by-hand design examples and the comparison between simulation results and specifications succeeded in demonstrating the usefulness and advantages of using the improved MOSFET compact model in the proposed methodologies.

Fig: gm/Id Plot