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ADG849:  3 V/5 V CMOS 0.5 Ω SPDT Switch in SC70

Product Details

The ADG849 is a monolithic, CMOS SPDT (single pole, double throw) switch that operates with a supply range of +1.8V to 5.5V. It is designed to offer ultra-low Ron resistance values of typically 0.5 Ω. This design makes the ADG849 an ideal solution for applications that require minimal distortion through the switch. The ADG849 also has the capability of carrying large amounts of current, typically 600mA at 5V operation.

Each switch of the ADG849 conducts equally well in both directions when on. The device exhibits break-before-make switching action, thus preventing momentary shorting when switching channels.

The ADG849 is available in a tiny 6-lead SC70 package, thus making it the ideal candidate for space-constrained applications.


  • Ultra-Low On Resistance:
    0.5 Ω Typical
    <0.8 Ω max at 5 V Supply
  • Excellent Distortion:
    0.01 Ω Typical
    0.2 Ω max RON Flatness
  • +1.8 V to +5.5 V Single Supply
  • High Current Carrying Capability:
    400mA Continuous Current
    600mA peak current at 5V
  • Extended Temperature Range: +125°
  • Rail-to-Rail Operation
  • Typical Power Consumption (<0.01 µW)
  • TTL/CMOS Compatible Inputs

Functional Block Diagram for ADG849


Title Content Type File Type
ADG849: 3 V/5 V CMOS 0.5 Ω SPDT Switch in SC70 Data Sheet  (Rev 0, 07/2004) (pdf, 341 kB) Data Sheets PDF
CN-0197: Lithium Ion Battery Stack Monitor with Both Signal and Power Isolation  (pdf, 406 kB) Circuit Note PDF
UG-252: Evaluation Board for the AD7280A Lithium Ion Battery Monitoring System  (pdf, 1627 kB) User Guides 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
analogZONE Reviews ADI's New Low-Resistance Switch Optimized for Audio Applications  (htm)
(analogZONE 3/08/04)
Product Reviews HTM
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

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADG849 SPICE Macro Model SPICE Models HTML

Evaluation Kits & Symbols & Footprints

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Price, packaging, availability

ADG849 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
ADG849YKSZ-500RL7 Status: Production 6 ld SC70 6 Ind Reel, 500 $0.79 $0.65 Y  Material Info PCN Purchase Sample
ADG849YKSZ-REEL Status: Production 6 ld SC70 6 Ind Reel, 10000 - $0.65 Y  Material Info PCN Purchase
ADG849YKSZ-REEL7 Status: Production 6 ld SC70 6 Ind Reel, 3000 - $0.65 Y  Material Info PCN Purchase
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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