Datasheet

OUTPUT
VOLTAGE
DIGITAL INPUT CODE
0
0 255
ZE
FSE
GE = FSE - ZE
FSE = GE + ZE
255 x V
A
256
DAC088S085
SNAS424C –AUGUST 2007–REVISED MARCH 2013 www.ti.com
MULTIPLYING BANDWIDTH is the frequency at which the output amplitude falls 3dB below the input sine wave
on V
REF1,2
with the DAC code at full-scale.
NOISE SPECTRAL DENSITY is the internally generated random noise. It is measured by loading the DAC to
mid-scale and measuring the noise at the output.
POWER EFFICIENCY is the ratio of the output current to the total supply current. The output current comes from
the power supply. The difference between the supply and output currents is the power consumed by the device
without a load.
SETTLING TIME is the time for the output to settle to within 1/2 LSB of the final value after the input code is
updated.
TOTAL HARMONIC DISTORTION PLUS NOISE (THD+N) is the ratio of the harmonics plus the noise present at
the output of the DACs to the rms level of an ideal sine wave applied to V
REF1,2
with the DAC code at mid-scale.
WAKE-UP TIME is the time for the output to exit power-down mode. This is the time from the rising edge of
SYNC to when the output voltage deviates from the power-down voltage of 0V.
ZERO CODE ERROR is the output error, or voltage, present at the DAC output after a code of 00h has been
entered.
Transfer Characteristic
Figure 2. Input / Output Transfer Characteristic
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