Electronic Design

Dirt Cheap ASIC Design for Dummies (Part 3): NMOS, PMOS Silicon Design Using a Web Browser

Quickly learn what the difference is between PMOS and NMOS transistors in their structure and operation, and how CMOS works with the two in combination. Siliwiz, a free, browser-based, ASIC layout ...
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

An introduction to semiconductor technologies for power management – Part 2

N-MOS and P-MOS transistors are analogous respectively to NPN and PNP transistors but their conduction mechanism is based completely on one type of carrier: holes for the PMOS and electrons for the ...
EDN

Low Power LDO Design Techniques for Really Small Profile Applications, Part 2

In our previous post Low Power LDO Design Techniques for Really Small Profile Applications, Part 1, we reviewed LDO design tradeoffs using an NMOS pass transistor. This design approach is proven good ...