Planar CMOS and multigate transistors based wide-band OTA buffer amplifiers for heavy resistance load

Analog buffer amplifier configurations capable of driving heavy resistive load using different operational transconductance (OTA) are presented in this paper. The OTA CMOS designed 0.18 ?m SCL technology library Cadence Virtuoso tool and multigate transistor TCAD Sentaurus tool. configuration simple outperform the circuits other OTAs terms power dissipation stability. Measured results show that circuit works well for below 100 ?. gain tuning up to 5 V/V is achieved with RL equal 50 ?, output swing 1 V. implemented k? exhibits a bandwidth around GHz tunable V/V.