IC design of a CMOS bandgap reference with trimming using SYNOPSYS EDA

• Main Authors: Baybay, Jan Tricia Grace A., Cadiz, Nino Angelo C., Celemin, Carlvinn S., Sng, Daryl R.
• Format: text
• Language: English
• Published: Animo Repository 2012
• Subjects: Voltage regulators; Electric measurements; Analog-to-digital converters > Equipment and supplies.; Electrical and Electronics; Engineering
• Online Access: https://animorepository.dlsu.edu.ph/etd_bachelors/11199
• Institution: De La Salle University

Nowadays, a lot of electronic devices like analog-to-digital and digital-to-analog converters dominate the market arena and most of them require a constant voltage in order to operate. It is also worth saying that an electronic device can be subject to temperature changes, be it from the internal or from the external factors. Hence, this research aims to design an integrated circuit that can demonstrate a constant voltage reference output even though changes or variations in a certain range of temperature and input voltage occur. Also, with the evolving market of nanotechnology and slim electronic devices or gadgets, ease in production and less bulky circuitries were definitely a nice way to compensate the market demands. Hence, this research also caters the design of a Bandgap Voltage Reference that uses pure complementary metal-oxide semiconductor or CMOS technology to compensate for easier manufacturing process and less bulking effects in the output circuit. Furthermore, in order to generate an even more precise output voltage reference with respect to the input voltage and temperature variation, this research aims to obtain 1% output voltage reference with respect to the input voltage. Hence, the Synopsis EDA will be used in order to demonstrate the characteristics of the proposed circuit. Synopsis EDA is widely used in the industry today due to its very accurate data simulation. Also, a start-up circuit which is used for ensuring that the circuit works properly and a trimming circuit for overcoming the output variation in the different corner libraries (TT, SS, FF, FS) that are simulated, were used to further enhance the performance of the proposed study and design of a Bandgap Voltage Reference. This research also showed computations and technical analysis in order to verify the data and results gathered. Truly, Bandgap Voltage Reference proved to be an effective addition to the growing market of electronic devices especially in terms of the trend today where small is better and portability is definitely a big factor to attract the consumers. This research coasts with the continuous development in electronics today and hopefully, continues to be a tool in terms of helping, improving and developing future high-end technologies.