8.2 Work out problems (25)

1. (3) Match the symbols with the options: NMOS, PMOS, or diode. Label of all device

terminals.

+

2. (5) Given 4 equally sized and matched transistors, draw a two output current mirror. One

output should equal the reference current and the other output should double it. Assume

A = 0.

Inef

ħ

3. (5) Why does IREF # IOUT in the circuit below? Assume both transistors are matched and

in saturation.

IREF

2 V

138/7.8

¥

4. (2) What is the purpose of the source follower output of the op amp?

JOUT

3V

138/7.8