ADG749 datasheet(7/12 Pages) AD

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Data Sheet

ADG749

Rev. C | Page 7 of 12

TERMINOLOGY

RON

Ohmic resistance between D and S.

ΔRON

On resistance match between any two channels, such as: RON

max − RON min.

RFLAT(ON)

Flatness is defined as the difference between the maximum and

minimum value of on resistance as measured over the specified

analog signal range.

IS (Off)

Source leakage current with the switch off.

ID, IS (On)

Channel leakage current with the switch on.

VD (VS)

Analog voltage on Terminals D and S.

CS (Off)

Off switch source capacitance.

CD, CS (On)

On switch capacitance.

tON

Delay between applying the digital control input and the output

switching on.

tOFF

Delay between applying the digital control input and the output

switching off.

Off time or on time measured between the 90% points of both

switches, when switching from one address state to another.

Crosstalk

A measure of unwanted signal that is coupled through from one

channel to another as a result of parasitic capacitance.

Off Isolation

A measure of unwanted signal coupling through an off switch.

Bandwidth

The frequency at which the output is attenuated by −3 dBs.

On Response

The frequency response of the on switch.

Insertion Loss

Loss due to on resistance of the switch.

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