8.1.9 Crosstalk

Crosstalk is defined as the ratio of the signal at the drain pin (D) of a different channel, when a signal is applied

at the source pin (Sx) of an on-channel. Figure 8-9 shows the setup used to measure, and the equation used to

compute crosstalk.

NETWORK

ANALYZER

GND

S1

S2

V

SIG

50Q

V

OUT

R

L

50Q

D

50Q

50Q

R

L

V

S

V

DD

0.1µF

Figure 8-9. Channel-to-Channel Crosstalk Measurement Setup

OUT

S

V

Channel-to-Channel Crosstalk

20 Log

V

§

·

˜

¨

¸

©

¹

(2)

8.1.10 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 (Sx) of an on-channel, and the output is measured at the drain pin (D) of the device. Figure

8-10 shows the setup used to measure bandwidth.

GND

NETWORK

ANALYZER

V

OUT

S

D

50Q

V

SIG

R

L

50Q

V

S

V

DD

0.1µF

S

X

R

L

50Q

Figure 8-10. Bandwidth Measurement Setup

2

1

V

Attenuation

20 Log

V

§

·

˜

¨

¸

©

¹

(3)

TMUX1308, TMUX1309

SCDS426C – MARCH 2020 – REVISED AUGUST 2020

www.ti.com

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