ADC16DV160_15 Datasheet, PDF (11/38 Pages) Texas Instruments – 160 MSPS Analog-to-Digital Converter

ADC16DV160
www.ti.com
SNAS488H – AUGUST 2009 – REVISED FEBRUARY 2013
SPUR (SPUR) is the difference, expressed in dB, between the power of input signal and the peak spurious
signal power, where a spurious signal is any signal present in the output spectrum that is not present at the input
excluding the second and third harmonic distortion.
SPURIOUS FREE DYNAMIC RANGE (SFDR) is the difference, expressed in dB, between the power of input
signal and the peak spurious signal power, 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 power of the first eight
harmonics to the input signal power. THD is calculated as:
THD = 20log₁₀
f
2
2
+
f₃₂
+
.
.
.
+
f
2
9
f₁₂
(3)
where f₁₂ is the power of the fundamental frequency and f₂₂ through f₉₂ are the powers of the first eight
harmonics in the output spectrum.
SECOND HARMONIC DISTORTION (2^ND HARM or H2) is the difference expressed in dB, from the power of its
2^nd harmonic level to the power of the input signal.
THIRD HARMONIC DISTORTION (3^RD HARM or H3) is the difference expressed in dB, from the power of the
3^rd harmonic level to the power of the input signal.
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