The amplifier employs fully differential structure to obtain high outputvoltageswing, and uses source degeneration techniques to improve the linearity.
Based on traditional two-stage amplifier, cross-coupled class AB output stage and cascode compensation were adopted to improve outputvoltageswing and bandwidth.
Used the switched capacitor Common Mode Feedback circuit(CMFB) in main amplifier to achieve a large outputvoltageswing and decrease the static power consumption at the same time.