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a

ADG708/ADG709

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

Tel: 781/329-4700

World Wide Web Site: http://www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 2000

CMOS, 3

Low Voltage

4-/8-Channel Multiplexers

FUNCTIONAL BLOCK DIAGRAMS

S1

S8

A0

D

A1

A2

ADG708

S1A

A0

DA

S4A

S1B

S4B

DB

EN

ADG709

1 OF 4

DECODER

EN

1 OF 8

DECODER

A1

FEATURES

1.8 V to 5.5 V Single Supply

3 V Dual Supply

3

On-Resistance

0.75

On-Resistance Flatness

100 pA Leakage Currents

14 ns Switching Times

Single 8-to-1 Multiplexer ADG708

Differential 4-to-1 Multiplexer ADG709

16-Lead TSSOP Package

Low Power Consumption

TTL/CMOS-Compatible Inputs

APPLICATIONS

Data Acquisition Systems

Communication Systems

Relay Replacement

Audio and Video Switching

Battery-Powered Systems

GENERAL DESCRIPTION

The ADG708 and ADG709 are low voltage, CMOS analog

multiplexers comprising eight single channels and four differential

channels respectively. The ADG708 switches one of eight inputs

(S1–S8) to a common output, D, as determined by the 3-bit

binary address lines A0, A1, and A2. The ADG709 switches one

of four differential inputs to a common differential output as

determined by the 2-bit binary address lines A0 and A1. An EN

input on both devices is used to enable or disable the device. When

disabled, all channels are switched OFF.

Low power consumption and operating supply range of 1.8 V to

5.5 V make the ADG708 and ADG709 ideal for battery-powered,

portable instruments. All channels exhibit break-before-make

switching action preventing momentary shorting when switch-

ing channels.

These switches are designed on an enhanced submicron process

that provides low power dissipation yet gives high switching

speed, very low on-resistance and leakage currents. On-resistance

is in the region of a few ohms and is closely matched between

switches and very flat over the full signal range. These parts can

operate equally well as either Multiplexers or Demultiplexers,

and have an input signal range that extends to the supplies.

The ADG708 and ADG709 are available in a 16-lead TSSOP

package.

PRODUCT HIGHLIGHTS

1. Single/Dual Supply Operation. The ADG708 and ADG709

are fully specified and guaranteed with 3 V and 5 V single

supply and

±3 V dual supply rails.

Ω Typical).

3. Low Power Consumption (<0.01

µW).

4. Guaranteed Break-Before-Make Switching Action.

5. Small 16-Lead TSSOP Package.