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ADG221:  LC2MOS ±15 V Quad SPST Switch

Product Details

The ADG221 and ADG222 are monolithic CMOS devices comprising four independently selectable switches. On-chip latches facilitate microprocessor interfacing. They are designed on an enhanced LC2MOS process which gives an increased signal handling capability of ±15 V. These switches also feature high switching speeds and low RON.

The ADG221 and ADG222 consist of four SPST switches. They differ only in that the digital control logic is inverted. All devices exhibit break before make switching action. Inherent in the design is low charge injection for minimum transients when switching the digital inputs.


  • 44 V Supply Maximum Ratings
  • ± 15 V Analog Signal Range
  • Low On-Resistance (60 max)
  • Low Leakage (0.5 nA typ)
  • Break-Before-Make Switching Action
  • Extended Plastic Temperature Range
    (-40ºC to +85ºC)
  • Low Power Dissipation (22.5 mW)
  • TTL/CMOS Compatible
  • Superior Second Source for
  • 16-Lead DIP/SOIC Packages

Functional Block Diagram for ADG221

Similar Products

Consider ADG1211 for lower charge injection (-0.3pC), lower leakage (0.02nA) and smaller packages.  New

Consider ADG5212 for guaranteed latch up proof, lower charge injection(0.07pC), smaller packages and up to +/-22V,+40V operation.  New


Title Content Type File Type
ADG221/ADG222: LC2MOS Quad SPST Switches Data Sheet  (Rev B, 07/1992) (pdf, 230 kB) Data Sheets PDF
AN-355: Behind the Switch Symbol  (pdf, 132 kB)
Use CMOS Analog Switches More Effectively When You Consider Them as Circuits
Application Notes PDF
AN-248: ADG201A/ADG202A and ADG221/ADG222 Performance with Reduced Power Supplies  (pdf, 166 kB) Application Notes PDF
Data-acquisition system uses fault protection
By Catherine Redmond, Analog Devices, Inc. (EDN, 4/15/2004)
Technical Articles HTML
CMOS Switches Offer High Performance in Low Power, Wideband Applications  (pdf, 320 kB)
by Theresa Corrigan and Ray Goggin, Analog Devices, Inc. (High Frequency Electronics, February 2004)
Technical Articles PDF
Temperature monitor measures three thermal zones
by Susan Pratt, Analog Devices, Inc. (EDN, 12/11/03)
Technical Articles HTML
Enhanced Multiplexing for MEMS Optical Cross Connects
by James Caffrey (Fiberoptic Product News, 8/2003)
Technical Articles HTML
Switches and Multiplexers Product Selection Guide  (pdf, 1462 kB) Product Selection Guide PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

ADG221 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
ADG221KNZ Status: Production 16 ld PDIP 16 Comm. Tube, 25 $2.09 $1.79 Y  Material Info PCN Purchase
ADG221KPZ Status: Production 20 ld PLCC 20 Comm. Tube, 49 $3.57 $3.57 Y  Material Info Notify Me Purchase
ADG221KR Status: Production 16 ld SOIC 16 Comm. Tube, 48 $2.23 $1.91 N  Material Info PCN/PDN Purchase
ADG221KRZ Status: Production 16 ld SOIC 16 Comm. Tube, 48 $1.93 $1.66 Y  Material Info PCN Purchase
ADG221TCHIPS Status: Last Time Buy CHIPS OR DIE 0 Mil Tray, 100 $5.10 $5.10 Y  Material Info PDN Purchase
ADG221TE Status: Contact ADI LCC:CER LEADLESS CHIP CARR 20 Mil Tube, 54 - - N  Material Info PCN/PDN Contact ADI
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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