An op amp that uses JFETs in the input differential amp and bipolar transistors for the following stages is called a bi-FET op amp.

Name: An op amp that uses JFETs in the input differential amp and bipolar transistors for the following stages is called a bi-FET op amp.
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Question

Quizplus · Accepted Answer

A bi-FET op amp utilizes JFETs for the input stage to achieve high input impedance and bipolar transistors in subsequent stages for their better gain and frequency characteristics, combining the advantages of both types of transistors.

An Op Amp That Uses JFETs in the Input Differential