VDD

VDD

VSS

VSS

GND

0.1 µF

0.1 µF

Audio Precision

VOUT

S

D

VS

RL

10

NŸ

5 VRMS

IN

VIN

RS

2

1

V

Attenuation

20 Log

V

§

·

˜

¨

¸

©

¹

Network Analyzer

VOUT

S

D

VS

V1

V2

VDD

VDD

VSS

VSS

0.1 µF

0.1 µF

RL

50

Ÿ

50

GND

22

MUX36S08, MUX36D04

SBOS705D – JANUARY 2016 – REVISED FEBURARY 2019

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Product Folder Links: MUX36S08 MUX36D04

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Copyright © 2016–2019, Texas Instruments Incorporated

8.12 Bandwidth

Bandwidth is defined as the range of frequencies that are attenuated by < 3 dB when the input is applied to the

source pin of an on-channel, and the output is measured at the drain pin of the MUX36xxx. Figure 36 shows the

setup used to measure bandwidth of the mux. Use Equation 4 to compute the attenuation.

Figure 36. Bandwidth Measurement Setup

(4)

8.13 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 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 37 shows the setup used to measure THD+N of the MUX36xxx.

Figure 37. THD+N Measurement Setup