Low Noise Rail-to-Rail Input and Output Range Operational Amplifier
Min Cai · Semiconductor Technology · 2006
A low noise rail-to-rail input and output range operational amplifier was desighed.In the input stage, current compensation technique was used to give a constant transconductancein the whole common mode input range; in the output stage, a simple class AB output stage wasused to improve the output range. The low 1/f noise character of bipolar transistors was used toimprove the noise and dynamic range of the operational amplifier.