Gain Boosted Telescopic OTA with 110db Gain and 1.8GHz. UGF

Designing high performance analog circuits is becoming increasingly challenging with the persistent trend toward reduced supply voltages. At large supply voltages, there is a tradeoff among speed, power and gain, amongst other performance parameters. Often these parameters present contradictory choices for the opamp architectures. In this paper we presented the gain boosted telescopic OTA. This architecture achieves a open loop dc gain of 110db and Unity-Gain frequency of 1.8GHz. Apart from we observed phase margin of 62 degree and output voltage swing 1.576V peak-to-peak.