A 2-Step Complementary-Based-Cross-Coupled Operational Transconductance Amplifier for LCD Column Driver

Column driver is an important component for LCD application. In this work, a new Complementary Cross-Coupling Operational Transconductance Amplifier (CBCC-OTA) featured with simple architecture is presented. Using 65 nm CMOS technology and a 1.2 V supply with 12.7 μA supply current at typical case, the simulation results of the proposed OTA with slew rate enhancement (SRE) has achieved a DC gain of 66.2 dB, settling time of 1.6 μs, average slew rate of 1.225 V/μs, gain bandwidth (GBW) of 917 kHz, and signal-to-noise ratio (SNR) of 79.1 dB for 150 pF load. The performance comparison has validated that the key performance metrics of the proposed OTA outperforms the representative works.