| 摘要 |
<p>Expansion of the bandwidth of a wideband CMOS data amplifier is accomplished using various combinations of shunt peaking (Lshunt), series peaking (Lseries), and miller capacitance cancellation (CMC). These various combinations are employed in any of the amplifier input stage, in intermediate stages, or in the last stage. <??>This invention achieves maximum bandwidth expansion by using series inductor peaking (Lseries) with miller capacitance cancellation technique (CMC) and shunt inductor peaking (Lshunt) in current controlled CMOS circuit (C<3>MOS). The series peaking provides a certain peak bandwith product depending on the inductance L, the capacitance C, and the quality of these two components. The bandwidth is inversely proportional to the square root of LC. The peaking mainly depends upon the inductance due to its limited Q. By reducing the miller capacitance from the C<3>MOS input a wider bandwidth is obtained with adequate peaking value. The total response of the amplifier can be obtained with wider bandwidth of minimum ripple and minimum phase distortion. <IMAGE></p> |
