1. Products
  2. Power Management
  3. Battery Management
  4. Battery ID and Authentication
  5. DS2703


Features and Benefits

  • Secure Challenge and Response Authentication Using the SHA-1 Algorithm
  • Directly Powered by the Dallas 1-Wire Interface with 16kbps Standard and 143kbps Overdrive Communication Modes
  • Unique 64-Bit Serial Number
  • Thermistor Multiplexer
  • Operates with VPULLUP as Low as 2.7V
  • Pb-Free 8-Pin µMAX® or 2mm x 3mm TDFN Package

Product Details

The DS2703 provides a robust cryptographic solution to ensure the authenticity of Li-Ion battery packs for cell phone, PDA, and portable computing devices. The DS2703 employs the Secure Hash Algorithm (SHA-1) specified in the Federal Information publication 180-1 and 180-2, and ISO/IEC 10118-3. SHA-1 is designed for authentication—just what is required for identifying battery packs manufactured by authorized sources.

The device's SHA-1 engine processes a host transmitted challenge using its stored 64-bit secret key and unique 64-bit ROM ID to produce a 160-bit response word for transmission back to the host. The secret key is securely stored on-chip and never transmitted between the battery and the host. A DS2703-based system produces a high degree of authentication security between a host system and its removable battery or other peripheral devices.

The Thermistor Multiplexer feature allows a three contact battery pack configuration to support data and thermistor functions. When activated through 1-Wire® command, the THM pin presents the thermistor impedance on the data contact and disconnects internal loading from the node.


  • 2.5G/3G Wireless Handsets
  • Digital Still and Video Cameras
  • Handheld or Notebook Computers and Terminals
  • PDAs

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Tools & Simulations

Software Development

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
DS2703U+ Material Declaration Reliability Data Micro-MAX, Thin Shrink Small-Outline
DS2703U+T&R Material Declaration Reliability Data Micro-MAX, Thin Shrink Small-Outline
Wafer Fabrication Data DS2703 Reliability Data

PCN-PDN Information

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Sample & Buy

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Buy Now Pricing

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List Pricing

(*)The 1Ku 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. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



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