| 摘要 |
<p>A method for controlling the quiescent output current of an operational amplifier arrangement (OAA) by means of tuning offset voltages of a stage (A2,A3) preceding a differential output driver stage (OS), further includes a step of selecting the cut-off frequency of the filter formed by the input capacitors of said differential output driver stage (OS) and the output impedance of said stage (A2,A3) preceding said differential output driver stage (OS), such that said cut-off frequency is lower than a predetermined part of the maximum bandwidth of the input signal (vin) applied to said operational amplifier arrangement (OAA), and whereby said stage (A2,A3) preceding said differential output driver stage (OS) is designed such as to be limited in output swing. The invention relates as well to an operational amplifier designed in accordance with the subject methodology. <IMAGE></p> |
