ADUM1240:  Micropower, Dual-Channel Digital Isolators, Default High (2/0 Channel Directionality)

Product Details

Product Status:Recommended for New Designs

The ADuM1240 is a micropower, dual-channel default high digital isolator with 2/1 directionality based on the Analog Devices, Inc., iCoupler® technology ( Quad-channel products available). Combining high speed CMOS and monolithic air core transformer technologies, these isolation components provide outstanding performance characteristics superior to alternatives, such as optocoupler devices, yet require the lowest power of any available isolation product.

Packaged in an 8-lead SOIC, this series of quad, 3 kV digital isolation devices operate with supplies as low as 2.5 V, offering the lowest available power consumption at a fraction of the power of comparable isolators at comparable data rates (up to 2 Mbps). In addition, all models provide low pulse width distortion (<8 ns for A grade) and an input glitch filter for extraneous noise disturbance protection.

All models operate with the supply voltage on either side ranging as low as 2.25 V, providing compatibility with lower voltage systems, as well as enabling voltage translation functionality across the isolation barrier. All products also have an output default logic state in the absence of the input power. When power is first applied, or is not yet applied to the input side, the ADuM1240 and ADuM1241 have a default high output and the ADuM1245 and ADuM1246 have a default low output.

PRODUCT HIGHLIGHTS

  1. Outstanding Power Performance. These 3 kV digital
    isolators operate with 2.5 V supplies.
  2. Distortion and Noise Protection. Low pulse width
    distortion (< 8 ns for A grade models) and an input glitch
    filter for extraneous noise disturbance protection.

iCoupler Technology. Patented Analog Devices technology
combining high speed CMOS and monolithic air core
transformer technologies.

APPLICATIONS

  • General-purpose, low power, multichannel isolation
  • 1 MHz low power SPI
  • 4 mA to 20 mA loop process control

FEATURES and BENEFITS

  • Ultralow power operation
    3.3 V operation
    6 μA per channel quiescent current, refresh enabled
    0.3 μA per channel quiescent current, refresh disabled
  • 148 μA/Mbps per channel typical dynamic current
  • 2.5 V operation
    3 μA per channel quiescent current, refresh enabled
    0.1 μA per channel quiescent current, refresh disabled
  • 116 μA/Mbps per channel typical dynamic current
  • Small, 8-lead SOIC package
  • Bidirectional communication
  • CSA Component Acceptance Notice #5A (pending)
  • Up to 2 Mbps data rate (NRZ)
  • High temperature operation: 125°C
  • Quad-channel products available
  • See datasheet for additional features

Functional Block Diagram of ADuM1240

Video: Industry’s Lowest Power Digital Isolators

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADUM1240 IBIS Models IBIS Models HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

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.

SampleSample & Buy

Price, packaging, availability

ADUM1240 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADUM1240ARSZ Status: Production 20 ld SSOP 20 Ind Tube, 66 $1.60 $1.39 Y  Material Info Notify Me Purchase Sample
ADUM1240ARSZ-RL7 Status: Production 20 ld SSOP 20 Ind Reel, 500 - $1.39 Y  Material Info Notify Me Purchase
ADUM1240ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $1.60 $1.39 Y  Material Info Notify Me Purchase Sample
ADUM1240ARZ-RL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $1.39 Y  Material Info Notify Me 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.

ADuM124x Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-ADUM1241EBZ Status: Production Evaluation Board $49.00 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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