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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
ⴞ3 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.
2. Low R
ON
(3 Ω Typical).
3. Low Power Consumption (<0.01 µW).
4. Guaranteed Break-Before-Make Switching Action.
5. Small 16-Lead TSSOP Package.
