DS2703
PRODUCTIONSHA-1 Battery Pack Authentication IC
SHA-1 Battery-Pack Authentication IC Provides a Robust Cryptographic Solution to Ensure the Authenticity of Li+ Battery Packs for Portable Devices
- Part Models
- 2
- 1ku List Price
- Starting From $1.78
Overview
- 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
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.
Applications
- 2.5G/3G Wireless Handsets
- Digital Still and Video Cameras
- Handheld or Notebook Computers and Terminals
- PDAs
Documentation
Data Sheet 1
Reliability Data 1
Design Note 1
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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| DS2703U+ | Micro-MAX, Thin Shrink Small-Outline | ||
| DS2703U+T&R | Micro-MAX, Thin Shrink Small-Outline |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Sep 19, 2018 - 1753N ASSEMBLY |
||
| DS2703U+ | PRODUCTION | |
| DS2703U+T&R | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Software Development 1
Evaluation Kits
Evaluation Kit for the DS2703
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