CMOS, Low Voltage, 4 Ω Dual SPST

Switches in 3 mm × 2 mm LFCSP

Data Sheet

ADG721/ADG722/ADG723

Rev. E

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FEATURES

1.8 V to 5.5 V single supply

4 Ω (max) on resistance

Low on resistance flatness

−3 dB bandwidth >200 MHz

Tiny package options

8-lead MSOP

3 mm × 2 mm LFCSP (A grade)

Fast switching times

Low power consumption (<0.1 μW)

TTL/CMOS compatible

APPLICATIONS

USB 1.1 signal switching circuits

Cell phones

PDAs

Battery-powered systems

Communication systems

Sample hold systems

Audio signal routing

Video switching

Mechanical reed relay replacement

FUNCTIONAL BLOCK DIAGRAMS

ADG721

IN1

D2

S2

S1

D1

IN2

ADG722

IN1

D2

S2

S1

D1

IN2

Figure 1.

Figure 2.

ADG723

SWITCHES SHOWN FOR

A LOGIC "0" INPUT

IN1

D2

S2

S1

D1

IN2

Figure 3.

GENERAL DESCRIPTION

The ADG721, ADG722, and ADG723 are monolithic CMOS

SPST switches. These switches are designed on an advanced

submicron process that provides low power dissipation yet gives

high switching speed, low on resistance, and low leakage

currents. The devices are packaged in both a tiny 3 mm × 2 mm

LFCSP and an MSOP, making them ideal for space-constrained

applications.

The ADG721, ADG722, and ADG723 are designed to operate

from a single 1.8 V to 5.5 V supply, making them ideal for use

in battery-powered instruments and with the new generation of

DACs and ADCs from Analog Devices, Inc.

The ADG721, ADG722, and ADG723 contain two independent

single-pole/single-throw (SPST) switches. The ADG721 and

ADG722 differ only in that both switches are normally open

and normally closed, respectively. In the ADG723, Switch 1 is

normally open and Switch 2 is normally closed.

Each switch of the ADG721, ADG722, and ADG723 conducts

equally well in both directions when on. The ADG723 exhibits

break-before-make switching action.

PRODUCT HIGHLIGHTS

1.

1.8 V to 5.5 V single-supply operation.

2.

3.

Low on resistance flatness.

4.

−3 dB bandwidth >200 MHz.

5.

Low power dissipation. CMOS construction ensures low

power dissipation.

6.

8-lead MSOP and 3 mm × 2 mm LFCSP.