PowerWise® Design University
Data Acquisition 201 - Quantization: Error and Noise
It is more common for a DAC to have a current for a reference and/or a current output than it is for an ADC.
True
False
A 10-bit DAC
Will have less quantization noise than a 12-bit ADC
Will have the same quantization noise as an 11-bit ADC
Both of these are correct
Neither of these is correct
The size of a quanta is
An LSB
V
REF
/ 2
n
, assuming a gain of unity
Both of these are correct
Neither of these is correct
As a result of the correction to get a "balanced" error around zero
The first code transition point is at 1/2 LSB
The full-scale transition occurs at 1 1/2 (1.5) LSB below the reference
Both of these are correct
Neither of these is correct
The range of ADC input values that produces a single output code is
Called a
quanta
The size of the LSB
Equal to the
Quantization Error
range
All of these are correct
In an ideal ADC with unity gain, the maximum conversion error is
V
REF
/ 2
V
REF
/ 2
(n)
V
REF
/ 2
(n/2)
V
REF
/ 2
(n/4)
The maximum quantization error of an ADC with build in offset is half of what it would be without that built in offset.
True
False
The fact that the input signal is quantized means that
Noise is added to it
Distortion is added to it
Both of these are true
Neither of these is true
The ADC transfer function is a
Continuous straight line
Series of discontinuous horizontal lines
Series of discrete points
None of these is correct
A Quantizer is also known as
An Analog-to-Digital Converter
A Digital-to-Analog Converter
Digital to Position Converter
None of these is correct
