ADGS1209 datasheet(21/33 Pages) AD

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Data Sheet

ADGS1208/ADGS1209

Rev. 0 | Page 21 of 33

TERMINOLOGY

IDD

IDD is the positive supply current.

ISS

ISS is the negative supply current.

VD, VS

VD and VS are the analog voltage on Terminal Dx and Terminal

Sx, respectively.

RON

RON is the ohmic resistance between Terminal Dx and Terminal

Sx.

∆RON

∆RON is the difference between the RON of any two channels.

RFLAT(ON)

RFLAT(ON) is flatness that is the difference between maximum and

minimum on resistance values measured over the specified

analog signal range.

IS (Off)

IS (Off) is the source leakage current with the switch off.

ID (Off)

ID (Off) is the drain leakage current with the switch off.

IS (On), ID (On)

IS (On) and ID (On) are the channel leakage currents with the

switch on.

VINL

VINL is the maximum input voltage for Logic 0.

VINH

VINH is the minimum input voltage for Logic 1.

IINL, IINH

IINL and IINH are the low and high input currents of the digital

inputs, respectively.

CS (Off)

CS (Off) is the off switch source capacitance, which is measured

with reference to ground.

CD (Off)

CD (Off) is the off switch drain capacitance, which is measured

with reference to ground.

CS (On), CD (On)

CS (On) and CD (On) are the on switch capacitances, which are

measured with reference the ground.

CIN

CIN is the digital input capacitance.

tON

tON is the delay between applying the digital control input and

the output switching on.

tOFF

tOFF is the delay between applying the digital control input and

the output switching off.

Off Isolation

Off isolation is a measure of unwanted signal coupling through

an off switch.

Charge Injection

Charge injection is a measure of the glitch impulse transferred

from the digital input to the analog output during switching.

Crosstalk

Crosstalk is a measure of unwanted signal that is coupled

through from one channel to another as a result of parasitic

capacitance.

−3 dB Bandwidth

Bandwidth is the frequency at which the output is attenuated

by 3 dB.

On Response

On response is the frequency response of the on switch.

Insertion Loss

Insertion loss is the loss due to the on resistance of the switch.

Total Harmonic Distortion + Noise (THD + N)

THD + N is the ratio of the harmonic amplitude plus noise of

the signal to the fundamental.

AC Power Supply Rejection Ratio (ACPSRR)

ACPSRR is the ratio of the amplitude of signal on the output to the

amplitude of the modulation. ACPSRR is a measure of the ability of

the devices to avoid coupling noise and spurious signals that

appear on the supply voltage pin to the output of the switch. The dc

voltage on the device is modulated by a sine wave of 0.62 V p-p.

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