Semiconductor Engineering

The History Of CMOS

Since CMOS has been around for about 50 years, a comprehensive history would be a book. This blog focuses on what I consider the major transitions. Before CMOS, there was NMOS (also PMOS, but I have ...
Electronics Weekly

Imec shows Si-passivated Ge nMOS gate stack

Imec has demo-ed a silicon-passivated germanium nMOS gate stack with dramatically reduced interface defect density (DIT) reaching the same level as a Si gate stack and with high mobility and reduced ...
Electronic Design

Use Hybrid PMOS-NMOS Active Loads To Cut Substrate Noise In Differential Amplifiers

PMOS transistors are less vulnerable to substrate noise since they’re placed in separate wells; designers implement guard rings to attenuate the substrate noise propagation. However, substrate noise ...
EDN

Using Deep N Wells in Analog Design

On a conventional CMOS process (see figure 1), NMOS devices are formed in a P well or substrate connected to ground (or the most negative supply in the circuit). PMOS devices are formed in an N well ...