Design of Low Power and High Gain Boosted Ota for High Frequency Radio Modulations and Telecommunication Systems
نویسنده
چکیده
This paper presents the design of high gain and low power fully differential Operational Transconductance Amplifier(OTA). Both the main conventional OTA and the boosting amplifiers are fully differential folded cascode.To increase the open-loop gain of the main OTA two auxiliary operational amplifiers(op-amps) are used . These auxiliary op-amps are fully differential folded cascode op-amps with continuous time Common mode feedbacks (CMFB).CMFB is used in auxiliary op-amps to stablise the designed OTA against temperature. This design has been implemented in 0.18μm CMOS Technology using Cadence EDA tool.Spectre simulation shows that the op-amp has DC gain of 171.7958dB , a noise response of 24.1876nV/Hz, power consumption obtained is 295pW and the unity gain bandwidth is more than 1.5GHz.
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