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CIE-1 Quiz 10

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1: Linear integrated circuits

have a limited number of input levels
have only two output states
have a change in output voltage with any change in input voltage
have a limited number of output levels

2: A forward biased diode has

a constant voltage over temperature
a lower voltage with higher temperature
a higher voltage with a higher temperature
a lower voltage with a lower temperature

3: The input stage of a linear amplifier is most probably a

emitter follower bipolar transistor
source follower field effect transistor
summing amplifier
differential amplifier

4: In the early days the biggest problem with the input amplifiers was

keeping the input transistors at the same temperature
oscillation with certain combinations of source and load
high levels of random noise
matching the input devices for gain

5: The ultimate solution to the thermal problem was

wire clips
metal cans
single piece of semiconductor
thermal epoxy

6: The world's first integrated circuit was

two PNP transistors on silicon
two PNP transistors on germanium
two NPN transistors on silicon
two NPN transistors on germanium

7: A collection of "integrated circuit" doodles is kept at the website of

Sierra College
USC
Florida State
Cal Poly SLO

8: The maximum gain of a "typical" op amp is around

3000
30,000
300,000
3,000,000

9: In the schematic of the typical opamp, the differential amplifier devices are

Q8 & Q9
Q10-Q12
Q5 & Q6
Q1-Q4

10: On the data sheet for the LM124 opamp, page1, how many times is the term "temperature compensated" used

4
3
2
1

11: How much does each individual amplifier in this package cost (cents)

25
10
7
4

12: According to page 3 of the data sheet, what is the absolute maximum supply voltage

64
32
16
8

13: According to page 3 of the data sheet, how long can the device stand a short from output to ground

1 minute
2 minutes
half an hour
forever

14: According to page 6 of the data sheet, how much current does the package consume

100 microamperes
100 milliamperes
600 microamperes
600 milliamperes

15: According to page 8 of the data sheet, how much current can you draw from the output at room temperature

40 milliamperes
40 microamperes
25 microamperes
25 milliamperes

16: According to the Lamp Driver circuit on page 10, you can light an incandescent light bulb that draws 600 milliamperes by

cascading four amplifiers in parallel
using an external bipolar transistor
directly from the amplifier
by using an external field effect transistor

17: According to page 10, you can drive an LED

by cascading four amplifiers in parallel
by using an external bipolar transistor
directly from the amplifier
by using an external field effect transistor

18: According to the data sheet page 11, you can make a square wave oscillator

using two amplifiers in a bridge circuit
using a single amplifier, inductors, and capacitors
using a single amplifier, resistors, and an inductor
with a single amplifier, resistors, and a capacitor

19: According to page 19, molded dual inline pacage (top of page), this IC identifies pin 1 by

a stripe
a dot
a lead length
a colored line

20: According to page 20, you cannot use this device in a(n)

heart pacemaker
automobile ignition system
audio speaker amplifier
photocell detector

21: "Dead bug" construction

uses components soldered with cockroach juice
has one or more dead moths making the circuit buggy
uses components mounted upside down
uses proto board for construction

22: The lab audio amplifier uses

resistors, capacitors, and inductors
all four sections of the opamp package
a 12 volt battery for a power supply
a special high-powered op-amp

23: The relationship between silicon diode forward voltage and temperature is

a sine wave
a straight line
logarithmic
highly curved

24: Calibrating a diode thermometer is done using

platinum-rhodium thermocouples
calibrated precision thermometers
bimetallic strips
ice cubes and spaghetti pots

25: One critical step in the construction of the audio amplifier is

measure all of the resistors for tolerance
use the exact size of scrap pc board
mark pin 1 on the bottom of the IC
cut the capacitor leads to the exact length specified

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