Datasheet

ADC08060
SNAS120H –OCTOBER 2000–REVISED MARCH 2013 www.ti.com
SIGNAL TO NOISE PLUS DISTORTION (S/(N+D) or SINAD) is the ratio, expressed in dB, of the rms value of
the input signal frequency at the output to the rms value of all of the other spectral components below half the
clock frequency, including harmonics but excluding d.c.
SPURIOUS FREE DYNAMIC RANGE (SFDR) is the difference, expressed in dB, between the rms values of the
input signal frequency at the output and the peak spurious signal, where a spurious signal is any signal present
in the output spectrum that is not present at the input.
TOTAL HARMONIC DISTORTION (THD) is the ratio, expressed in dB, of the total of the first nine harmonic
levels at the output to the level of the fundamental at the output. THD is calculated as
where
• f
1
is the RMS power of the fundamental (input) frequency
• f
2
through f
10
is the power in the first 9 harmonics in the output spectrum (3)
ZERO SCALE OFFSET ERROR is the error in the input voltage required to cause the first code transition. It is
defined as
V
OFF
= V
ZT
− V
RB
where
• V
ZT
is the first code transition input voltage (4)
Timing Diagram
Figure 29. ADC08060 Timing Diagram
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