A 100-MHz 100-dB operational amplifier with multipath nested Miller compensation structure
- 1 January 1992
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Journal of Solid-State Circuits
- Vol. 27 (12) , 1709-1717
- https://doi.org/10.1109/4.173096
Abstract
-A 100-MHz bipolar operational amplifier has again of 100 dB. The op amp owes its high unity-gain bandwidth and high gain to an all-n-p-n signal path and multipath nested Miller compensation (MNMC). The phase margin with a 100-pF load is 40" at 100 MHz and the amplifier settles in 60 ns to 0.1% on a 1-V step. For comparison, a similar op amp without the mul- tipath technique has been realized. The unity-gain bandwidth of this nested Miller compensation (NMC) op amp is 60 MHz and the settling time is 70 ns. Theory and measurements con- firm that the multipath technique almost doubles the band- width of nested Miller compensated amplifiers.Keywords
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