CMOS
a
Low Voltage 4 ⍀ Dual SPST Switches
ADG721/ADG722/ADG723
FUNCTIONAL BLOCK DIAGRAMS
FEATURES
+1.8 V to +5.5 V Single Supply
4 ⍀ (Max) On Resistance
Low On-Resistance Flatness
–3 dB Bandwidth >200 MHz
Rail-to-Rail Operation
8-Lead SOIC Package
Fast Switching Times
tON 20 ns
ADG722
ADG721
S1
D1
S1
D1
IN1
IN1
D2
S2
D2
S2
IN2
IN2
tOFF 10 ns
Low Power Consumption (<0.1 W)
TTL/CMOS Compatible
ADG723
APPLICATIONS
Battery Powered Systems
Communication Systems
Sample Hold Systems
Audio Signal Routing
Video Switching
S1
D1
IN1
D2
S2
IN2
Mechanical Reed Relay Replacement
SWITCHES SHOWN FOR A LOGIC "0" INPUT
PRODUCT HIGHLIGHTS
GENERAL DESCRIPTION
1. +1.8 V to +5.5 V Single Supply Operation. The ADG721,
ADG722 and ADG723 offers high performance, including
low on resistance and fast switching times and is fully speci-
fied and guaranteed with +3 V and +5 V supply rails.
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.
2. Very Low RON (4 Ω max at 5 V, 10 Ω max at 3 V). At 1.8 V
operation, RON is typically 40 Ω over the temperature range.
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.
3. Low On-Resistance Flatness.
4. –3 dB Bandwidth >200 MHz.
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. While in the ADG723, Switch 1 is
normally open and Switch 2 is normally closed.
5. Low Power Dissipation. CMOS construction ensures low
power dissipation.
6. Fast tON/tOFF.
7. 8-Lead µSOIC.
Each switch of the ADG721, ADG722 and ADG723 conducts
equally well in both directions when on. The ADG723 exhibits
break-before-make switching action.
REV. 0
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which may result from its use. No license is granted by implication or
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© Analog Devices, Inc., 1998