Integration of Split Length Technique and Current Replication Branch in Two-Stage Class AB Operational Amplifier
Journal Title: International Journal of engineering Research and Applications - Year 2018, Vol 8, Issue 7
Abstract
A new two-stage class AB operational amplifier (op-amp) designed in which the differential-pair device N-channel Metal Oxide Semiconductor Field Effect Transistor (NMOSFET) is replaced with split-length device and input stage is transformed into class AB using two-tail transistors. Current replication branch also incorporated in the design to increase output current. Hence, in this design, a class AB operation is achieved in both output and input. The entire design is implemented and simulated in Cadence design environment in 180 nm with 1.8 V supply. The newly designed op-amp exhibits high and symmetrical slew rate with the small amount of power consumption. Moreover, this design also improves gain and bandwidth and found to exhibit better performance as compared to other analysed existing topologies. The newly designed class AB op-amp works at 1.8 V supply with a positive slew rate of 57 V/µs and negative slew rate of 56 V/µs, again of 90.33 dB, thephase margin of 56.87, the bandwidth of 36 MHz, the power of 915 µW and settling time of 50 ns. Hence, this design exhibit excellent performance, which can satisfy the growing demands for energyefficient high-speed circuits in the modern electronic, and communication industry. Index Terms—CMOSFET circuits, Operational amplifiers; slew rate; gain; phase margin; split length transistors
Authors and Affiliations
Nimna Joseph, Nina Joseph, Jobin Varghese
Keywords
Related Articles
- EP ID EP394980
- DOI 10.9790/9622-0807034044.
- Views 128
- Downloads 0
A Compact Multiband Metamaterial based Microstrip Patch Antenna for Wireless communication Applications
In this paper, a metamaterial based compact multiband microstrip antenna is proposed which can give high gain and directivity. Metamaterials are periodic structures and have been intensively investigated due to the parti...
The Experimental Behavior Researches of the Reinforced Concrete Beams Bending Stressed By Short – Time Load
Through experimental testing, of series of concrete beams, the author wanted to obtain the tension values in the reinforcement and concrete under the simultaneous load; the occurrence of first cracks and monitoring of th...
A finite element study to compare the forces generated by a newly designed NITI file with an established rotary file
Aim: Aim of this study is to evaluate the lateral forces on the instrument in the apical 3rd of curved canal with two Nickel Titanium rotary systems. Methodology: One brand of instrument RaCe no 25 was scanned with micro...
The Study Bio film Forming Activity, Survival in the Gastrointestinal Tract and Antibiotic Resistance of Propionic Acid Bacteria
The study biofilm forming activity and survival in the gastrointestinal tract of propionic acid bacteria Propionibacterium freudenreichii subsp. shermanii №№ 1, 10, 12, 13, 14, isolated from various fermented milk produc...
Analysis and Research on Polling Scheduling Algorithm of Intelligent Distribution Network System
Ethernet passive optical network (EPON) is an important development direction for the construction of intelligent distribution network access layer communication system. According to the service quality requirements of e...