PowerWise® Design University

Data Acquisition 105 - DAC Primer

The MSB has a value of
2n
2n - 1
2(n-1)
None of these is correct

The full-scale output of a Voltage Output DAC with a gain factor = 1 is
1.0V
One LSB less than VREF
VREF
None of these is correct

All DACs have a Top Reference and a Bottom Reference
True
False

A 10-bit DAC always has
512 possible input codes
1023 possible output levels
Both of these are correct
None of these is correct

Assuming that there are no errors, every time the DAC input increases by one count, a DAC will have an output
Increase of one LSB
Increase of VREF / n
Decrease of one LSB
None of these is correct

A 10-bit, straight binary DAC with a reference of 2.048V has
An LSB size of 1.953125 mV
A resolution of 1.953125 mV
Both of these
Neither of these

The bottom reference of many DACs is
An undetermined voltage
The positive supply
Ground
None of these is correct

A negative DNL lower than -1 causes
Missing codes
Non-monotonic behavior
Both of these are correct
Neither of these is correct

The "G" term in the DAC Input-Output transfer function is ignored when
Its small effect can be ignored
It is unity
It is zero
None of these is correct

The DAC output is always
An Analog Voltage
An Analog Current
High Impedance
None of these

The DAC transfer function is always linear
True
False