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2018•Unpublished venueRequires access

A High Speed Two Stage Operational Amplifier with High CMRR

Dhananjaya Tripathy, Pritam Bhadra

Open publisher page 14 citations

Abstract

A differential amplifier is actually a electronic amplifier which amplifies the difference between two input voltages and suppresses any voltage common to the two inputs. Differential type amplifier is a analog circuit in which there is two input terminal and one output terminal. The input is actually the difference between the value of two input terminals. The differential amplifier is a vast used circuit building block in analog integrated circuits, principally op-amps. The differential amplifier can be implemented with BJTs or MOSFETs. Here we have got high gain of 70 dB, slew rate of 119 V/μs and Gain Bandwidth of 30MHz.It was seen that two stage amplifier gives better amplification because of the multiplying factor. Here we have taken some specification based on which we derived the results theoretically and then simulated in the order to get the results. Here in our proposed circuit we have got very good CMRR of 72dB.

About this research paper

What this paper is about

A differential amplifier is actually a electronic amplifier which amplifies the difference between two input voltages and suppresses any voltage common to the two inputs. Differential type amplifier is a analog circuit in which there is two input terminal and one output terminal. The input is actually the difference between the value of two input terminals. The differential amplifier is a vast used circuit building block in analog integrated circuits, principally op-amps. The differential amplifier can be implemented with BJTs or MOSFETs. Here we have got high gain of 70 dB, slew rate of 119 V/μs and Gain Bandwidth of 30MHz.It was seen that two stage amplifier gives better amplification because of the multiplying factor. Here we have taken some specification based on which we derived the results theoretically and then simulated in the order to get the results. Here in our proposed circuit we have got very good CMRR of 72dB.

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OpenAlex reports 14 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

A differential amplifier is actually a electronic amplifier which amplifies the difference between two input voltages and suppresses any voltage common to the two inputs. Differential type amplifier is a analog circuit in which there is two input terminal and one output terminal. The input is actually the difference between the value of two input terminals. The differential amplifier is a vast used circuit building block in analog integrated circuits, principally op-amps. The differential amplifier can be implemented with BJTs or MOSFETs. Here we have got high gain of 70 dB, slew rate of 119 V/μs and Gain Bandwidth of 30MHz.It was seen that two stage amplifier gives better amplification because of the multiplying factor. Here we have taken some specification based on which we derived the results theoretically and then simulated in the order to get the results. Here in our proposed circuit we have got very good CMRR of 72dB.

Key concepts: Computer science, Operational amplifier, Amplifier, Stage (stratigraphy), Electronic engineering, Electrical engineering, Engineering, Telecommunications

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