Datasheet

2
f1
2
f10
2
f2
10
‡
A
A++A
logTHD = 20
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ADC128S022
www.ti.com SNAS334E –AUGUST 2005–REVISED MARCH 2013
TOTAL HARMONIC DISTORTION (THD) is the ratio, expressed in dBc, of the rms total of the first five harmonic
components at the output to the rms level of the input signal frequency as seen at the output. THD is calculated
as
(2)
where A
f1
is the RMS power of the input frequency at the output and A
f2
through A
f10
are the RMS power in the
first 9 harmonic frequencies.
THROUGHPUT TIME is the minimum time required between the start of two successive conversions. It is the
acquisition time plus the conversion and read out times. In the case of the ADC128S022, this is 16 SCLK
periods.
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