An ultra-low voltage, ultra-low power fully recycling folded cascode amplifier

A new ultra-low power fully recycling folded cascode amplifier with low supply voltage is presented. The new configuration benefits from higher transconductance, slew rate and gain in comparison with conventional recycling folded cascode. Furthermore, the phase-margin is enhanced and the input referred noise is reduced in this new configuration. Simulation results in standard 0.18 μm CMOS technology shows that the proposed amplifier achieves 316% improvement in gain bandwidth and 11 dB boosts in DC gain in comparison with the conventional folded cascode amplifier. The amplifier consumes 240nW @ 0.6 V which make it suitable for low-power biomedical applications.