TMUX8212 datasheet(22/42 Pages) TI

Part #	TMUX8212

Description	TMUX821x 100-V, Flat Ron, 1:1 (SPST), 4-Channel Switches with Latch-Up Immunity and 1.8-V Logic

PDF	42 Pages

Scroll/Zoom	100%

Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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22 / 42 page

8.9 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 multiplexer output. The On-Resistance of the device varies with the amplitude of the input signal and results

in distortion when the drain pin is connected to a low-impedance load. Total harmonic distortion plus noise is

denoted as THD+N. Figure 8-9 shows the setup used to measure THD+N of the devices.

SELx

GND

VSELX

Audio Precision

VOUT

VDD

VSS

VDD

VSS

GND

0.1 µF

GND

0.1 µF

50Ÿ

Other

Sx/ Dx

pins

Figure 8-9. THD+N Measurement Setup

TMUX8211, TMUX8212, TMUX8213

SCDS434B – OCTOBER 2021 – REVISED MARCH 2023

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TMUX8212 Datasheet(PDF) 22 Page - Texas Instruments