Design and Implementation of Equalizers using Adaptive Body Biasing in 22nm FDSOI Technology
Masterarbeit
As a master-level IC Designer, it is crucial to focus on achieving higher performance and lower power consumption, especially when operating at lower supply voltages (e.g., 0.8V or less). Modern advancements in technology provide innovative techniques to address these challenges. One such technique is Adaptive Body Biasing (ABB), which dynamically adjusts the threshold voltage (VTH) of MOSFETs in real time to optimize performance and power consumption based on specific operational needs. ABB includes two modes: Forward Body Biasing (FBB) and Reverse Body Biasing (RBB).
Forward Body Biasing (FBB) is a powerful method to enhance the performance of transistors in integrated circuits (ICs). It involves applying a bias voltage to the body terminal of a MOSFET, thereby modifying its threshold voltage and improving its drive strength and switching speed. In practice, FBB applies a voltage to the body terminal of a transistor that is opposite in polarity to the transistor type:
For n-type MOSFETs (NFETs): A positive voltage is applied to the body terminal. This reduces the threshold voltage (VTH), allowing the transistor to conduct more easily, thereby improving performance.
For p-type MOSFETs (PFETs): A negative voltage is applied to achieve a similar effect, decreasing the threshold voltage and enhancing transistor performance.
