flash ADC &successive approximation ADC

What is the Primary disadvantage of the Flash analog to digital converter (ADC)?

• It requires the input voltage to be applied to the inputs simultaneously

• a long conversion time is required

• a large number of output lines is required to simultaneously decode the input voltage

• a large number of compactors is required to represent a reasonable sized binary number

What is the Conversion time of flash converter?

• 20s

• 10s

• 1s

• The Conversion takes place continuously

In a flash Analog to Digital converter,the output of each comparator is connected to an input of a ______________

• decoder

• priority encoder

• multiplexer

• demultiplexer

The throughput of a flash ADC is measured in

• displacement per second

• distance per second

• samples per minute

• samples per second

The main advantage of the successive - approximation A/D converter over the counter -ramp A/D converter is its:

• more complex circuitry

• less complex circuitry

• longer conversion time

• shorter conversion time

The most common ADC seen in telecommunications based on audio signals is

• flash ADC

• successive approximation ADC

• sigma-delta ADC

• dual slope ADC

Which A/D converter is considered to be simplest, fastest and most expensive?

• Servo converter

• Counter type ADC

• Flash type ADC

• All of the mentioned

The flash type A/D converters are called as

• Parallel non-inverting A/D converter

• Parallel counter A/D converter

• Parallel inverting A/D converter

• Parallel comparator A/D converter

What is the advantage of using flash type A/D converter?

• High speed conversion

• Low speed conversion

• Nominal speed conversion

• None of the mentioned