REV. A

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a

ADG781/ADG782/ADG783

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 2002

2.5

Quad SPST Switches

in Chip Scale Package

FUNCTIONAL BLOCK DIAGRAMS

IN1

IN2

IN3

IN4

S1

D1

S2

D2

S3

D3

S4

D4

ADG781

SWITCHES SHOWN FOR A LOGIC “1” INPUT

IN1

IN2

IN3

IN4

S1

D1

S2

D2

S3

D3

S4

D4

ADG782

IN1

IN2

IN3

IN4

S1

D1

S2

D2

S3

D3

S4

D4

ADG783

FEATURES

1.8 V to 5.5 V Single Supply

Low On Resistance (2.5

Typ)

Low On-Resistance Flatness (0.5

)

–3 dB Bandwidth > 200 MHz

Rail-to-Rail Operation

20-Lead 4 mm

4 mm Chip Scale Package

Fast Switching Times

Typical Power Consumption (< 0.01

W)

TTL/CMOS Compatible

For Functionally Equivalent Devices in 16-Lead TSSOP

and SOIC Packages, See ADG711/ADG712/ADG713

APPLICATIONS

Battery Powered Systems

Communication Systems

Sample Hold Systems

Audio Signal Routing

Video Switching

Mechanical Reed Relay Replacement

GENERAL DESCRIPTION

The ADG781, ADG782, and ADG783 are monolithic CMOS

devices containing four independently selectable switches. These

switches are designed on an advanced submicron process that

provides low power dissipation and high switching speed, low on

resistance, low leakage currents and high bandwidth.

They are designed to operate from a single 1.8 V to 5.5 V sup-

ply, making them ideal for use in battery powered instruments

and with the new generation of DACs and ADCs from Analog

Devices. Fast switching times and high bandwidth make the

part suitable for video signal switching.

The ADG781, ADG782, and ADG783 contain four independent

single-pole/single throw (SPST) switches. The ADG781 and

ADG782 differ only in that the digital control logic is inverted.

The ADG781 switches are turned on with a logic low on the

appropriate control input, while a logic high is required to turn

on the switches of the ADG782. The ADG783 contains two

switches whose digital control logic is similar to the ADG781,

while the logic is inverted on the other two switches.

Each switch conducts equally well in both directions when ON.

The ADG783 exhibits break-before-make switching action.

The ADG781/ADG782/ADG783 are available in 20-lead chip

scale packages.

PRODUCT HIGHLIGHTS

1. 20-Lead 4 mm

4 mm Chip Scale Package (CSP).

2. 1.8 V to 5.5 V Single Supply Operation. The ADG781,

ADG782, and ADG783 offer high performance and are

fully specified and guaranteed with 3 V and 5 V supply

rails.

Ω max at 5 V, 8 Ω max at 3 V). At supply

Ω over the temperature

range.

4. Low On-Resistance Flatness.

5. –3 dB Bandwidth >200 MHz.

6. Low Power Dissipation. CMOS construction ensures low

power dissipation.

8. Break-Before-Make Switching. This prevents channel shorting

when the switches are configured as a multiplexer (ADG783

only).