Datasheet

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<1 Ω CMOS, 1.8 V to 5.5 V,

Dual SPST Switches

ADG821/ADG822/ADG823

Rev. A

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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

8-lead MSOP

33 ns switching times

Typical power consumption: <0.01 μW

TTL-/CMOS-compatible inputs

Pin-compatible with the ADG721/ADG722/ADG723

APPLICATIONS

Power routing

Battery-powered systems

Communication systems

Data acquisition systems

Audio and video signal routing

Cellular phones

Modems

PCMCIA cards

Hard drives

Relay replacement

FUNCTIONAL BLOCK DIAGRAMS

ADG821

SWITCHES SHOWN FOR

A LOGIC 0 INPUT.

IN1

IN2

2851-001

ADG822

SWITCHES SHOWN FOR

A LOGIC 0 INPUT.

IN1

IN2

2851-002

Figure 1. Figure 2.

ADG823

SWITCHES SHOWN FOR

A LOGIC 0 INPUT.

IN1

IN2

02851-003

Figure 3.

GENERAL DESCRIPTION

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.

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.

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.

PRODUCT HIGHLIGHTS

1. Very Low On Resistance: 0.5 Ω typ.

2. On Resistance Flatness (R

FLAT(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.

6. 8-Lead MSOP.

Summary of content (12 pages)

PAGE 1
<1 Ω CMOS, 1.8 V to 5.5 V, Dual SPST Switches ADG821/ADG822/ADG823 FUNCTIONAL BLOCK DIAGRAMS 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 8-lead MSOP 33 ns switching times Typical power consumption: <0.
PAGE 2
ADG821/ADG822/ADG823 TABLE OF CONTENTS Features .............................................................................................. 1 ESD Caution...................................................................................5 Applications ....................................................................................... 1 Pin Configuration and Function Descriptions..............................6 Functional Block Diagrams .............................................................
PAGE 3
ADG821/ADG822/ADG823 SPECIFICATIONS VDD = 5 V ± 10%, GND = 0 V; TA = −40°C to +125°C, unless otherwise noted. Table 1.
PAGE 4
ADG821/ADG822/ADG823 VDD = 2.7 V to 3.6 V, GND = 0 V, TA = −40°C to +125°C, unless otherwise noted. Table 2.
PAGE 5
ADG821/ADG822/ADG823 ABSOLUTE MAXIMUM RATINGS TA = 25°C, unless otherwise noted. Table 3. Parameter VDD to GND Analog Inputs1 Digital Inputs1 Peak Current, S or D Continuous Current, S or D Operating Temperature Range Automotive Storage Temperature Range Junction Temperature (TJ max) Package Power Dissipation 8-Lead MSOP Thermal Impedance θJA θJC Lead Temperature, Soldering (10 sec) IR Reflow, Peak Temperature (<20 sec) 1 Rating −0.3 V to +7 V −0.3 V to VDD + 0.3 V or 30 mA, whichever occurs first −0.
PAGE 6
ADG821/ADG822/ADG823 S1 1 D1 2 IN2 3 GND 4 ADG821/ ADG822/ ADG823 TOP VIEW (Not to Scale) 8 VDD 7 IN1 6 D2 5 S2 02851-004 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Figure 4. Pin Configuration Table 6. Pin Function Descriptions Pin No. 1 2 3 4 5 6 7 8 Mnemonic S1 D1 IN2 GND S2 D2 IN1 VDD Description Source Terminal. This pin can be an input or output. Drain Terminal. This pin can be an input or output. Logic Control Input. Ground (0 V) Reference. Source Terminal.
PAGE 7
ADG821/ADG822/ADG823 TYPICAL PERFORMANCE CHARACTERISTICS 0.8 0.8 TA = 25°C VDD = 2.7V 0.7 0.7 VDD = 3.0V +125°C VDD = 3.3V ON RESISTANCE (Ω) ON RESISTANCE (Ω) +85°C 0.6 0.6 VDD = 4.5V 0.5 0.4 0.3 VDD = 5.0V 0.5 0.4 +25°C 0.3 –40°C 0.2 0.2 VDD = 5.5V 0.1 0.1 0 0 1 2 3 VD, VS (V) 4 5 0 Figure 5. On Resistance vs. VD, VS 1.0 1.5 VD, VS (V) 2.0 2.5 3.0 Figure 8. On Resistance vs. VD, VS for Different Temperatures, VDD = 3 V 5.0 8 TA = 25°C VDD = 5V, 3V 4.5 7 4.0 6 3.
PAGE 8
ADG821/ADG822/ADG823 60 –10 TA = 25°C –20 VDD = 3V 50 ATTENUATION (dB) –30 TIME (ns) 40 VDD = 5V tON 30 20 VDD = 3V, 5V tOFF –40 –50 –60 –70 –80 –90 10 –20 0 20 40 60 TEMPERATURE (°C) 80 100 120 –110 02851-011 0 –40 0.1 Figure 11. tON/tOFF vs. Temperature 1.8 VDD = 3V, 5V TA = 25°C 1.6 LOGIC THRESHOLD VOLTAGE (V) –20 –30 –40 –50 –60 1.4 1.2 VIN RISING 1.0 VIN FALLING 0.8 0.6 0.4 0.2 1 10 FREQUENCY (MHz) 100 0 02851-012 –70 0.2 0 Figure 12. Off Isolation vs.
PAGE 9
ADG821/ADG822/ADG823 TEST CIRCUITS IDS V1 D A VD VS Figure 17. On Resistance S NC 02851-018 RON = V1/IDS ID (ON) ID (OFF) S A 02851-017 VS D D NC = NO CONNECT Figure 18. Off Leakage A VD Figure 19. On Leakage VDD 0.1µF VIN ADG821 50% 50% VIN ADG822 50% 50% VDD S VS VOUT D CL 35pF RL 50Ω IN 90% VOUT 90% tOFF tON 02851-020 GND Figure 20. Switching Times VDD VIN 0.
PAGE 10
ADG821/ADG822/ADG823 VDD VDD 0.1µF 0.1µF NETWORK ANALYZER VDD S S 50Ω 50Ω VIN RL 50Ω GND VOUT VIN VOUT VS Figure 23. Off Isolation 0.1µF NETWORK ANALYZER VDD S1 D S2 IN CHANNEL-TO-CHANNEL CROSSTALK = 20 log R 50Ω GND VOUT VS 02851-024 VS INSERTION LOSS = 20 log Figure 24. Channel-to-Channel Crosstalk Rev. A | Page 10 of 12 VOUT VOUT WITH SWITCH VOUT WITHOUT SWITCH Figure 25.
PAGE 11
ADG821/ADG822/ADG823 TERMINOLOGY VDD Most positive power supply potential. IINL (IINH) Input current of the digital input. GND Ground (0 V) reference. CS (Off) Off switch source capacitance. IDD Positive supply current. CD (Off) Off switch drain capacitance. S Source terminal. May be an input or output. CD, CS (On) On switch capacitance. D Drain terminal. May be an input or output. tON Delay between applying the digital control input and the output switching on. IN Logic control input.
PAGE 12
ADG821/ADG822/ADG823 OUTLINE DIMENSIONS 3.20 3.00 2.80 8 3.20 3.00 2.80 5 1 5.15 4.90 4.65 4 PIN 1 0.65 BSC 0.95 0.85 0.75 1.10 MAX 0.15 0.00 0.38 0.22 COPLANARITY 0.10 0.23 0.08 8° 0° 0.80 0.60 0.40 SEATING PLANE COMPLIANT TO JEDEC STANDARDS MO-187-AA Figure 26.