MUX36S08 Datasheet, PDF (21/37 Pages) Texas Instruments – Low-Capacitance, Low-Leakage-Current, Precision, Analog Multiplexers

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MUX36S08, MUX36D04
SBOS705A – JANUARY 2016 – REVISED JANUARY 2015
8.12 THD + Noise
The total harmonic distortion (THD) of a signal is a measurement of the harmonic distortion, and is defined as the
ratio of the sum of the powers of all harmonic components to the power of the fundamental frequency at the mux
output. The on-resistance of the MUX36xxx varies with the amplitude of the input signal and this results in THD
when the drain pin is connected to a low-impedance load. Total harmonic distortion plus noise is denoted as
THD+N. Figure 36 shows the setup used to measure THD+N of the MUX36xxx.
VDD
0.1µF
VSS
0.1µF
VDD
VSS
IN
VIN
S
D
GND
AUDIO PRECISION
RS
RL
10NŸ
VOUT
VS
V p-p
Figure 36. THD+N Measurement Setup
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