6 Parameter Measurement Information

6.1 On-Resistance

The on-resistance of a device is the ohmic resistance between the source (Sx) and drain (D) 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

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

V

D

VS

ISD

Sx

Figure 6-1. On-Resistance Measurement Setup

6.2 Off-Leakage Current

Source 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).

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

VDD

VDD

S1

S2

GND

VS

D

VD

A

Is (OFF)

Figure 6-2. Off-Leakage Measurement Setup

www.ti.com

TMUX1119

SCDS401C – DECEMBER 2018 – REVISED FEBRUARY 2024

Copyright © 2024 Texas Instruments Incorporated

Submit Document Feedback

13

Product Folder Links: TMUX1119