Question

Find the voltage range at which the multiplier can be used as a squarer circuit?

(a) 0 – Vin

(b) Vref – Vin

(c) 0 – Vref

(d) All of the mentioned

The question was posed to me in an internship interview.

My question comes from Multiplier and Divider in portion Operational Amplifier Applications of Linear Integrated Circuits

Answer 1

Correct answer is (c) 0 – Vref

Check out the details: The basic multiplier can be used to square any positive or negative number provided the number can be represented by a voltage between 0 to Vref.