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

Copyright © 2017, Texas Instruments Incorporated

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

Copyright © 2017, Texas Instruments Incorporated

23

MUX506, MUX507

www.ti.com

SBAS803A – NOVEMBER 2016 – REVISED NOVEMBER 2017

Product Folder Links: MUX506 MUX507

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7.11 Bandwidth

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

to the source pin of an on-channel, and the output measured at the drain pin of the MUX50x. Figure 35 shows

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

Figure 35. Bandwidth Measurement Setup

(4)

7.12 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 MUX50x 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 36 shows the setup used to measure THD+N of the MUX50x.

Figure 36. THD+N Measurement Setup