Design of operational trans-conductance amplifier (OTA) using split length transistor technique

This Paper proposed the design of single stage operational trans-conductance amplifier by using split length transistors technique. Split length transistors technique is very helpful to enhance the DC gain without affecting the unity-gain bandwidth (UGBW), stability and power dissipation of conventional single stage operational trans-conductance amplifier. This design is simulated on cadence virtuoso tool in 180nm complementary metal oxide semiconductor process and supply voltage is 1.8V. Simulations results show that DC gain is increased 23% and UGBW is approx. 56% while maintaining other parameters. This technique is very helpful for high amplification, stability and low power applications.