TMUX7348F datasheet(28/64 Pages) TI1

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8 Parameter Measurement Information

8.1 On-Resistance

The on-resistance of the TMUX7348F and TMUX7349F is the ohmic resistance across the source (Sx) and

drain (Dx) pins of the device. The on-resistance varies with input voltage and supply voltage. The symbol RON is

used to denote on-resistance. Figure 8-1 shows the measurement setup used to measure RON. ΔRON represents

the difference between the RON of any two channels, while RON_FLAT denotes the flatness that is defined as

the difference between the maximum and minimum value of on-resistance measured over the specified analog

signal range.

GND

Figure 8-1. On-Resistance Measurement Setup

8.2 Off-Leakage Current

There are two types of leakage currents associated with a switch during the off state:

1. Source off-leakage current IS(OFF): the leakage current flowing into or out of the source pin when the switch

is off.

2. Drain off-leakage current ID(OFF): the leakage current flowing into or out of the drain pin when the switch is

off.

Figure 8-2 shows the setup used to measure both off-leakage currents.

Is (OFF)

VDD

VSS

GND

ID (OFF)

IS(OFF)

ID(OFF)

VFP

VFN

VDD

VSS

VFP

VFN

Figure 8-2. Off-Leakage Measurement Setup

TMUX7348F, TMUX7349F

SCDS400B – MARCH 2022 – REVISED JULY 2023

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TMUX7348F Datasheet(PDF) 28 Page - Texas Instruments