<1 Ω CMOS, 1.8 V to 5.5 V,
Dual SPST Switches
ADG821/ADG822/ADG823
FUNCTIONAL BLOCK DIAGRAMS
FEATURES
0.8 Ω maximum on resistance @ 125°C
0.3 Ω maximum on resistance flatness @ 125°C
1.8 V to 5.5 V single supply
200 mA current carrying capability
Automotive temperature range: −40°C to +125°C
Rail-to-rail operation
ADG821
ADG822
S1
D1
S1
D1
IN1
IN1
D2
S2
D2
S2
IN2
IN2
8-lead MSOP
33 ns switching times
Typical power consumption: <0.01 μW
TTL-/CMOS-compatible inputs
SWITCHES SHOWN FOR
A LOGIC 0 INPUT.
SWITCHES SHOWN FOR
A LOGIC 0 INPUT.
Figure 1.
Figure 2.
Pin-compatible with the ADG721/ADG722/ADG723
ADG823
APPLICATIONS
S1
D1
IN1
Power routing
Battery-powered systems
Communication systems
Data acquisition systems
Audio and video signal routing
Cellular phones
D2
S2
IN2
SWITCHES SHOWN FOR
A LOGIC 0 INPUT.
Modems
Figure 3.
PCMCIA cards
Hard drives
Relay replacement
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
The ADG821/ADG822/ADG823 are monolithic CMOS single-
pole, single-throw (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.
1. Very Low On Resistance: 0.5 Ω typ.
2. On Resistance Flatness (RFLAT(ON)): 0.15 Ω typ.
3. Automotive Temperature Range: −40°C to +125°C.
4. Current Carrying Capability: 200 mA.
5. Low Power Dissipation. CMOS construction ensures low
power dissipation.
The ADG821/ADG822/ADG823 are designed to operate from
a single 1.8 V to 5.5 V supply, making them ideal for use in
battery-powered instruments.
6. 8-Lead MSOP.
Each switch of the ADG821/ADG822/ADG823 conducts
equally well in both directions when on. The ADG821/
ADG822/ADG823 contain two independent SPST switches.
The ADG821 and ADG822 differ only in that both switches are
normally open and normally closed, respectively. In the ADG823,
Switch 1 is normally open and Switch 2 is normally closed. The
ADG823 exhibits break-before-make switching action.
The ADG821/ADG822/ADG823 are available in an
8-lead MSOP.
Rev. A
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