TMUX1511 datasheet(13/45 Pages) TI2

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6 Parameter Measurement Information

6.1 On-Resistance

The on-resistance of a device is the ohmic resistance between 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. The measurement setup used to measure RON is shown in Figure 6-1 . Voltage (V) and current

(IDS) are measured using this setup, and RON is computed as shown below with RON = V / ISD:

Figure 6-1. On-Resistance Measurement Setup

6.2 Off-Leakage Current

Source off-leakage current is defined as the leakage current flowing into or out of the source pin when the switch

is off. This current is denoted by the symbol IS(OFF).

Drain off-leakage current is defined as the leakage current flowing into or out of the drain pin when the switch is

off. This current is denoted by the symbol ID(OFF).

The setup used to measure both off-leakage currents is shown in Figure 6-2.

VDD

GND

ID (OFF)

VDD

GND

IS (OFF)

Figure 6-2. Off-Leakage Measurement Setup

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TMUX1511

SCDS390B – SEPTEMBER 2018 – REVISED MARCH 2025

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TMUX1511 Datasheet(PDF) 13 Page - Texas Instruments