ADG820 datasheet(5/12 Pages) AD

5 / 12 page

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ADG819/ADG820

–5–

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate

on the human body and test equipment and can discharge without detection. Although the ADG819/

ADG820 features proprietary ESD protection circuitry, permanent damage may occur on devices

subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended

to avoid performance degradation or loss of functionality.

WARNING!

ESD SENSITIVE DEVICE

TERMINOLOGY

VDD

Most Positive Power Supply Potential

GND

Ground (0 V) Reference

IDD

Positive Supply Current

Source Terminal. May be an input or output.

DDrain Terminal. May be an input or output.

Logic Control Input

RON

Ohmic Resistance between D and S

∆RON

ON Resistance Match between Any Two Channels, i.e., 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, S

VINL

Maximum Input Voltage for Logic “0”

VINH

Minimum Input Voltage for Logic “1”

IINL(IINH)

Input Current of the Digital Input

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.

tBBM

OFF time or ON time measured between the 90% points of both switches when switching

from one address state to another.

tMBB

ON time measured between the 80% points of both switches when switching from one

address state to another.

Charge Injection

A measure of the glitch impulse transferred from the digital input to the analog output during switching.

Crosstalk

A measure of unwanted signal 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

Frequency at which the output is attenuated by –3 dB.

ON Response

Frequency Response of the ON Switch

Insertion Loss

Loss due to the ON Resistance of the Switch

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