ECE-3220

QUIZ #3 PREP SHEET

All Prior Quiz Prep sheets, homework, lectures, and reading assignments.

Describe what is meant by input offset voltage.

Describe what is meant by input bias current.

Describe what is meant by input offset current

Describe what is meant by input common mode range..

Given a basic BJT-DP (Fig 6.1) derive the relationship between the fractional mismatch in collector resistance and the input offset voltage that results.

Given a basic BJT-DP (Fig 6.1) derive the relationship between the fractional mismatch in transistor saturation current and the input offset voltage that results.

Given a basic BJT-DP (Fig 6.1) derive the relationship between the fractional mismatch in transistor beta and the input offset current that results.

What are the factors that need to be considered when determining the input common mode range?

Draw both an NPN and a PNP transistor configured as diode-connected transistors.

Explain the basic mechanism by which a basic current mirror operates.

Draw a basic BJT-based current mirror of both the NPN and the PNP variety.

Draw a BJT-based current mirror having base current compensation of both the NPN and the PNP variety.

Draw a BJT-based Wilson current mirror of both the NPN and the PNP variety.

Draw a BJT-based Widlar current source of both the NPN and the PNP variety.

Derive the current gain and output resistance of basic BJT-based current mirror.

Derive the current gain and output resistance of BJT-based current mirror having base current compensation.

Derive the current gain and output resistance of BJT-based Wilson current mirror.

Derive the current gain and output resistance of BJT-based Widlar current source.

Describe the key pros and cons of BJT vs. FET based current mirrors and sources.