TMUX8212 datasheet(18/42 Pages) TI

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8 Parameter Measurement Information

8.1 On-Resistance

The On-Resistance of the TMUX821x 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

IS(OFF)

Is (OFF)

GND

VDD

VSS

GND

ID(OFF)

GND

ID (OFF)

Figure 8-2. Off-Leakage Measurement Setup

TMUX8211, TMUX8212, TMUX8213

SCDS434B – OCTOBER 2021 – REVISED MARCH 2023

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TMUX8212 Datasheet(PDF) 18 Page - Texas Instruments