Integrated Circuits Quiz # 2

True or False? Digital circuits typically can have an infinite amount of states.

False

True

With reference to CMOS and other IC technologies, what is "dynamic power consumption"?

power consumed when output is logic 1

power consumed by the interface of two logic families

power consumed while switching logic states

Which of these uses a DAC?

speaker system

microphone

A thin slice of silicon crystal used in IC fabrication is called a

dopant

die

implant

wafer

Which of these is a hardware description language used to design an application specific IC?

MATLAB

C

Verilog

HHDL

Another name for a base wafer is

integrated circuit

the substrate material

diode

N-junction

What is another name for a bistable multivibrator?

Flip-flop

counter

NAND gate

Boolean timer

If you were to design an audio amplifier which type of integrated circuit would you use?

Analog circuit

(All of these)

(None of these)

Digital circuit

What kind of IC can be customised by a user after it has been manufactured?

hybrid IC

VLSI

FPGA

CMOS

What is the round-off error between the analog input and the digitized output of an ADC called?

linearity error

conversion noise

ADC ratio

quantization error

According to the Nyquist sampling theorem, what should be the minimum sampling rate of an ADC?

twice the highest frequency of the analog signal

equal to the highest frequency of the analog signal

twice the lowest frequency of the analog signal

four times the average frequency of the analog signal

Which program is useful when trying to solve complex integrated circuits?

C++

JAVA

SPICE

Matlab

Which of these is a type of DAC?

Wilkinson

successive approximation

ramp compare

R-2R

What does ASIC stand for?

Application Specific Integrated Circuits

(None of these)

Analog Specific Integrated Circuits

True or False: All logic families use the same voltage levels to represent logic 0 and logic 1.

True

False

In which type of digital logic does the output depend on just the present input (and not on past inputs)?

Combinational Logic

Sequential Logic

What is an example of volatile memory?

Flash memory

EEPROM

hard disk

DRAM

A mixed-signal chip is often found in

computer

automobile

a cell phone

(None of these)

What is correct symbolic name of ground pin on IC?

Vdd

Vss

None of these.

Vcc

Which of these is NOT a procedure used for IC construction?

Die Preparion

Electrolysis

Photolithography

Etching

A circuit that can convert a DC signal to an AC signal with a frequency dependent on the input voltage is called a:

voltage converter

input controlled oscillator

voltage controlled oscillator

DC controlled synthesizer

What can be used to transfer voltage from a circuit with high output impedance to one with low input impedance?

summing amplifier

voltage comparator

differential amplifier

voltage buffer amplifier

What is a characteristic of asynchronous sequential logic?

it does not make use of a clock signal

complex operations are performed over many successive clock cycles

output does not have memory

Ideally, in an LC circuit what happens to the total energy?

It increases linearly

It decreases exponentially

It is conserved

It decreases linearly

True or False? A temperature sensor would likely used a digital circuit.

False

True

What is a method used to separate individual electronic components on a silicon substrate?

silicon segregation

p-n junction isolation

interface isolation

electric segregation

Parasitics become a problem as a circuit becomes:

use at higher frequencies

smaller

more complex

(All of these)

One technology which uses both BJTs and CMOS is called

BiCMOS

TTL

CMOS junction

BJMOS

What kind of feedback is used in an op-amp to make a Schmitt trigger?

positive feedback

no feedback

negative feedback

Logical Effort is a means to:

decrease output resistance in a CMOS circuit

increase output voltage in a TTL circuit

calculate delay in a CMOS circuit