Question

What is the reason for using Lateral pnp transistor in Integrated Circuits?

(a) Requires simple process control

(b) Simultaneous fabrication of pnp and npn transistors

(c) Provide good isolation

(d) Miniaturization and cost reduction

The question was posed to me in quiz.

I would like to ask this question from Active and Passive Components of IC topic in section IC Fabrication of Linear Integrated Circuits

Answer 1

The correct answer is:

(c) Provide good isolation

Explanation:

Lateral pnp transistors are used in integrated circuits primarily to achieve good isolation between components. They are constructed in a planar structure, which allows for effective separation from other elements on the same chip. This isolation is crucial for ensuring reliable circuit operation by minimizing interference and cross-talk between adjacent components.