403 Exam 2

Front

What is emitter degeneration in a differential pair?

Back

Emitter degeneration is a technique used to improve linearity and stability in differential amplifiers by adding a resistor in the emitter leg.

Front

What is the advantage of using emitter degeneration?

Back

It improves linearity and makes the voltage gain independent of collector current.

Front

What does CMMR stand for?

Back

Common Mode Rejection Ratio, a measure of how well a circuit rejects common mode signals.

Front

What is needed for a high CMMR?

Back

A current source with a large output resistance.

Front

How do you calculate decibels (dB)?

Back

Use the formula 20log(V1/V2).

Front

What is a MOSFET?

Back

A type of transistor used for switching and amplifying signals.

Front

What is the main advantage of MOSFETs in a cascode current mirror?

Back

They provide high output resistance.

Front

What is transconductance?

Back

It is a measure of how effectively a transistor can control the output current based on the input voltage.

Front

What is the difference between MOSFETs and BJTs?

Back

MOSFETs are voltage-controlled devices, while BJTs are current-controlled.

Front

What does the term 'linearity' refer to in amplifiers?

Back

Linearity refers to the ability of an amplifier to produce an output that is directly proportional to its input.