Current Controlled MOS Current Mode Logic with Auto-Detection of Threshold Voltage Fluctuation

摘要

In this paper, a theoretical analysis of current-controlled (CC-) MOS current mode logic (MCML) is reported. Furthermore, the circuit performance of the CC-MCML with the auto-detection of threshold voltage (V_(th)) fluctuation is evaluated. The proposed CC-MCML with the auto-detection of V_(th) fluctuation automatically suppresses the degradation of circuit performance induced by the V_(th) fluctuations of the transistors automatically, by detecting these fluctuations. When a V_(th) fluctuation of ±0.1 V occurs on the circuit, the cutoff frequency of the circuit is increased from 0 Hz to 3.5 GHz by using the proposed CC-MCML with the auto-detection of V_(th) fluctuation.