2

1

f

2

6

f

2

2

f

10

‡

A

A

+

+

A

log

20

=

THD

ADC082S021

www.ti.com

SNAS282D – APRIL 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

where

•

harmonic frequencies. Accurate THD measurement requires a spectrally pure sine wave (monotone) at the

ADC input.

(2)

THROUGHPUT TIME is the minimum time required between the start of two successive conversion. It is the

acquisition time plus the conversion and read out times. In the case of the ADC082S021, this is 16 SCLK

periods.

Copyright © 2005–2013, Texas Instruments Incorporated

Submit Documentation Feedback

9

Product Folder Links: ADC082S021