Analog.com Analog Dialogue Wiki 简体中文
EngineerZone
EngineerZone
  • Log In
  • Site
  • Search
  • User
  • Support

    Popular Forums

    • RF and Microwave
    • Power Management
    • Video
    • FPGA Reference Designs
    • Precision ADCs
    • Linux Software Drivers
    • SigmaDSP Processors & SigmaStudio Dev. Tool

    Product Forums

    • A2B
    • Amplifiers
    • Analog Microcontrollers
    • Clock and Timing
    • Data Converters
    • Direct Digital Synthesis (DDS)
    • Energy Monitoring and Metering
    • Interface and Isolation
    • MEMS Inertial Sensors
    • Processors and DSP
    • Switches/Multiplexers
    • Temperature Sensors
    • Voltage References
    View All

    Application Forums

    • Audio
    • Automated Test Equipment (ATE)
    • Condition-Based Monitoring
    • Depth, Perception & Ranging Technologies
    • Embedded Vision Sensing Library
    • Motor Control Hardware Platforms
    • Optical Sensing
    • Precision Technology Signal Chains Library
    • Video
    • Wireless Sensor Networks Reference Library

    Design Center Forums

    • ACE Evaluation Software
    • ADEF System Platforms
    • Design Tools and Calculators
    • FPGA Reference Designs
    • Linux Software Drivers
    • Microcontroller no-OS Drivers
    • Reference Designs
    • Signal Chain Power (SCP)
    • Software Interface Tools
    • System Demonstration Platform (SDP) Support
  • Learn

    Highlighted Webinar

    Improve Smart Building Energy Efficiency with Industrial Ethernet Controlled Air Conditioning (HVAC) Systems

    Recent Discussions

    • Activity: Simple Op Amps, For ADALM1000 Fig. 1.3 Buffering example
    • ADALM-PLUTO [NETWORK] vs [USB_ETHERNET]
    • Using buffer size different from 2**n
    • ADALM1000 Pixelpulse feature Source Voltage / Measure Current explanation
    • function USB plug Pluto

    Places

    • ADI Education Home
    • ADI Education China
    • ADI Education India
    • ADI Education Philippines
    • StudentZone (Analog Dialogue)
    • Virtual Classroom

    Latest Webinars

    • Improve Smart Building Energy Efficiency with Industrial Ethernet Controlled Air Conditioning (HVAC) Systems
    • Sustainable Motion Control Solutions for High Performance Servo Drives
    • Audio Design Solutions for Augmented and Virtual Reality (AR/VR) Glasses
    • Robust Industrial Motor Encoder Signal Chain Solutions
    • Precision Low Power Measurement Solutions for Intelligent Edge
    View All Webinars
  • Community Hub

    Challenge Yourself!

      KCC's quizzes AQQ235 about a bipolar common emitter amplifier - a kind proposal from our colleague Martin Walker
    View All

    Places

    • Community Help
    • Logic Lounge

    Resources

    • EZ Code of Conduct
    • Getting Started Guide
    • ADI: Words Matter
    • Community Help Videos
    View All
  • Blogs

    Highlighted Blogs

    Empowering Surveillance Cameras To Capture A Scene Without Being Heard

     

    Mastering The Metrics Makes Specifying Encoders Simpler

    Latest Blogs

    • Understanding Secret Key Cryptography Without Formulas
    • 3 Reasons Why IO-Link is Changing Smart Factory Decision Making
    • EMC Mitigation: The Finer Points of Ferrite Beads
    • Introducing an X Band Phased Array Exploration Platform – the “Phaser”!
    • How to Start with a Solution – Interactive Signal Chains
    Read All Blogs

    ADI Blogs

    • EZ Spotlight
    • The Engineering Mind
  • Partners

    Electronic Design Services - PartnerZone

    • Boston Engineering
    • Calian, Advanced Technologies
    • Colorado Engineering Inc. (DBA CAES AT&E)
    • Clockworks Signal Processing
    • Epiq Solutions
    • Fidus
    • PalmSens
    • Richardson RFPD
    • Tri-Star Design, Inc.
    • VadaTech
    • Vanteon
    • X-Microwave
    View All
Interface and Isolation
Interface and Isolation
Documents ADuM: Can you explain in more detail the DC correctness paragraph in datasheet?
  • Q&A
  • FAQs/ Docs
  • Members
  • Tags
  • More
  • Cancel
  • Documents
  • INTERFACE AND ISOLATION SUPPORT COMMUNITY
  • Tags List (Interface & Isolation)
  • +General: FAQ
  • +AD5700: FAQ
  • ADG324x: FAQ
  • +ADM2687: FAQ
  • +ADN4695E: FAQ
  • +ADuM1100: FAQ
  • +ADUM1200: FAQ
  • +ADuM1201: FAQ
  • +ADuM1230: FAQ
  • +ADuM1250: FAQ
  • +ADuM1251: FAQ
  • +ADUM1300: FAQ
  • +ADuM1301: FAQ
  • -ADUM1400: FAQ
    • ADuM iCoupler: what is the inductance value of the internal coils?
    • ADuM iCouplers immunity to magnetic fields
    • ADuM1400
    • ADuM1400: Absolute maximum ratings
    • ADUM1400: maximum input rise time & input/output protection
    • ADuM1400_ UL flammability rating
    • ADuM: Are iCoupler products sensitive to external magnetic fields?
    • ADuM: Can you explain in more detail the DC correctness paragraph in datasheet?
    • ADUM: difference between ADuM1402ARWZ and ADuM1402WSRWZ
    • ADuM: Internal overvoltage protection
    • UL flammability ratings
  • +ADUM1401: FAQ
  • +ADuM1402: FAQ
  • +ADuM1420: FAQ
  • +ADuM1440: FAQ
  • +ADuM1441: FAQ
  • +ADuM144x: FAQ
  • +ADuM2400: FAQ
  • +ADuM2401: FAQ
  • +ADuM2402: FAQ
  • +ADUM3070: FAQ
  • +ADuM3160: FAQ
  • +ADuM3190: FAQ
  • +ADuM3201: FAQ
  • +ADuM3220: FAQ
  • +ADuM3221: FAQ
  • +ADuM3223: FAQ
  • +ADuM3440: FAQ
  • +ADuM3470: FAQ
  • +ADuM3471: FAQ
  • +ADuM3480: FAQ
  • +ADuM3482: FAQ
  • +ADuM4160: FAQ
  • +ADuM4190: FAQ
  • +ADuM4223: FAQ
  • +ADuM4400: FAQ
  • +ADuM4472: FAQ
  • +ADuM5000: FAQ
  • +ADUM5010: FAQ
  • +ADuM5201: FAQ
  • +ADuM5202: FAQ
  • +ADuM5230: FAQ
  • +ADuM5241: FAQ
  • +ADuM5400: FAQ
  • +ADuM5401: FAQ
  • +ADuM5402: FAQ
  • +ADuM5403: FAQ
  • +ADuM6000: FAQ
  • +ADuM6132: FAQ
  • +ADuM620X: FAQ
  • +ADuM6400: FAQ
  • +ADuM6401: FAQ
  • +ADuM6402: FAQ
  • +ADuM7234: FAQ
  • +EVAL-CN0313: FAQ
  • +isoPower: FAQ
  • +MLVDS: FAQ
  • +SPIsolator: FAQ

ADuM: Can you explain in more detail the DC correctness paragraph in datasheet?

Q 

I do not fully understand the "dc correctness and magnetic field immunity"
paragraph in the data sheet. The AC part is clear. But should I understand the
DC part as: If the input signal is between low threshold (0.8 V) and high
threshold (2.0 V) for more than 5 microsecond, the output will be defined by
the truth table. But what does the table say about undefined logical inputs?
Can you describe this a little better?

 

A 

The DC correctness section says if the input does not detect a transition for
about 1us, then the encoder will send a refresh pulse indicating the state of
the input as high or low.  If the level is not defined, as it would be for
between 0.8V and 2V, there is no guarantee what level of refresh pulse will be
sent, but what ever side of the threshold the input is, it will send that
refresh pulse. If you have noise on the input and the input is near the
threshold, keep in mind that there is about 100mV hysteresis and if the noise
is larger than this, the output could follow the noise and chatter.

  • adum1400
  • Share
  • History
  • More
  • Cancel
Related
Recommended
Social
Quick Links
  • About ADI
  • ADI Signals+
  • Analog Dialogue
  • Careers
  • Contact us
  • Investor Relations
  • News Room
  • Quality & Reliability
  • Sales & Distribution
  • Incubators
Languages
  • English
  • 简体中文
  • 日本語
Newsletter

Interested in the latest news and articles about ADI products, design tools, training and events? Subscribe today!

Sign Up
Analog Logo
©1995 - 2023 Analog Devices, Inc. All Rights Reserved
沪ICP备09046653号-1
  • Sitemap
  • Legal
  • Privacy & Security
  • Privacy Settings
EngineerZone Uses cookies to ensure you get the best experience in our community. For more information on cookies, please read our Privacy & Security Statement.