Datasheet

DAC7568
DAC8168
DAC8568
www.ti.com SBAS430D –JANUARY 2009–REVISED MAY 2012
DAC Output Noise Density Full-Scale Range (FSR)
Output noise density is defined as internally- Full-scale range (FSR) is the difference between the
generated random noise. Random noise is maximum and minimum analog output values that the
characterized as a spectral density (nV/√Hz). It is DAC is specified to provide; typically, the maximum
measured by loading the DAC to midscale and and minimum values are also specified. For an n-bit
measuring noise at the output. DAC, these values are usually given as the values
matching with code 0 and 2
n
.
DAC Output Noise
DAC output noise is defined as any voltage deviation
of DAC output from the desired value (within a
particular frequency band). It is measured with a DAC
channel kept at midscale while filtering the output
voltage within a band of 0.1Hz to 10Hz and
measuring its amplitude peaks. It is expressed in
terms of peak-to-peak voltage (V
pp
).
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