Locale Icon
English
  • Forums

    Popular Forums

    • LTspice
    • RF and Microwave
    • Video
    • Power Management
    • Precision ADCs
    • FPGA Reference Designs
    • Linux Software Drivers

    Product Forums

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

    Application Forums

    • A2B
    • Audio
    • Automated Test Equipment (ATE)
    • Condition-Based Monitoring
    • Depth, Perception & Ranging Technologies
    • Embedded Vision Sensing Library
    • Motor Control Hardware Platforms
    • 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

    Upcoming Webinar: Simplify High-Accuracy Instrumentation Design with Latest Precision Data Converters

    Join us for an insightful webinar on how ADI’s Precision technology is transforming the landscape of high accuracy instrument design with cutting-edge...

    Places

    • ADI Education Home
    • ADI Webinars
    • GMSL U
    • StudentZone (Analog Dialogue)
    • Video Annex
    • Virtual Classroom

    Libraries

    • 3D ToF Depth Sensing Library
    • Continuous-Wave CMOS Time of Flight (TOF) Library
    • Embedded Vision Sensing Library
    • Gigabit Multimedia Serial Link (GMSL) Library
    • Optical Sensing Library
    • Precision Technology Signal Chains Library
    • Software Modules and SDKs Library
    • Supervisory Circuits Library
    • Wireless Sensor Networks Library

    Latest Webinars

    • Simplifying Connectivity - Remote Controlled (RC) Nodes in a Software Defined Vehicle (SDV)
    • Upcoming Webinar: Simplify High-Accuracy Instrumentation Design with Latest Precision Data Converters
    • Design High Performance Power Systems with Ultralow Noise Technology
    • µModule Solution for Intelligent Motion Control
    • Accelerating Embedded System Development with CodeFusion Studio™︎
    View All Webinars
  • Community Hub

    Challenge Yourself!

      KCC's Quizzes AQQ286 about Right Labels on the Right Boxes containing colored balls

      1. Quote of the week: "Knowledge is knowing a tomato is a fruit. Wisdom is not putting it in a fruit salad" - unknown Sources: commons.wikimedia...

    View All

    What's Brewing

      Quiz! Why a Hybrid Approach Works Blog and Test Your Knowledge

      Quiz! Understand ISO 26262 Compliance Test your knowledge with our quick quiz , based on the blog " Safety in Layers: Why a Hybrid Approach Works ...

    View All

    Places

    • Community Help
    • Logic Lounge
    • Super User Program

    Resources

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

    Highlighted Blogs

    Exploring DCM and CCM in SMPS: Part 1 of 6

    Power supplies are the unsung heroes of electronic devices, ensuring that they receive the precise, stable, and clean DC voltages they need to function...

     

    Let’s Take a Field-Bus Trip

    Let’s dive deep into what makes field buses unique compared to each other. Building on our previous blog post, What Makes Field Bus Communication Unique...

    Latest Blogs

    • Countable vs Non-countable Faults
    • Power Your Signal: DAS Networks Unleashed: Part 2 of 4
    • Combining Functional Safety and Availability Using Redundancy
    • Top 3 Engineering Blogs That Captivated Minds on EngineerZone
    • How to Generate a Custom Profile for Optimal System Performance
    Read All Blogs

    ADI Blogs

    • EZ Spotlight
    • The Engineering Mind
  • ContentZone

    Visit ContentZone

    ContentZone

    Technical articles. Blogs. Videos. Your ADI content, all in one place.

    View ContentZone

    Featured Content

    Featured Content Title

    Blurb About Content

    View Content By Industry

    • Aerospace and Defense Systems
    • Automotive Solutions
    • Consumer Technology Solutions
    • Data Center Solutions
    • Energy Solutions
    • Healthcare Solutions
    • Industrial Automation Technology Solutions
    • Instrumentation and Measurement Solutions
    • Intelligent Building Solutions
    • Internet of Things (IoT)
    • Wireless Communication Solutions

    View Content By Technology

    • A2B Audio Bus
    • ADI OtoSense Predictive Maintenance Solutions
    • Dynamic Speaker Management
    • Gallium Nitride (GaN) Technology
    • Gigabit Multimedia Serial Link (GMSL)
    • Industrial Vision
    • Power Solutions
    • Precision Technology
    • RF
    • Security Solutions
    • Sensor Interfaces
    • SmartMesh
  • Partners

    Partner Forums

    • Boston Engineering
    • PalmSens
    • Richardson RFPD
    • Tri-Star Design, Inc.

    Partner Libraries

    • Calian, Advanced Technologies Library
    • Clockworks Signal Processing Library
    • Colorado Engineering Inc. (DBA CAES AT&E) Library
    • Epiq Solutions Library
    • Fidus Library
    • VadaTech Library
    • Vanteon Library
    • X-Microwave Library
EngineerZone
EngineerZone
Precision ADCs
  • Log In
  • User
  • Site
  • Search
OR
Ask a Question
Precision ADCs
  • Data Converters
Precision ADCs
Documents AD7799: Changing channels
  • Forums
  • File Uploads
  • FAQs/Docs
  • Members
  • Tags
  • More
  • Cancel
  • +Documents
  • +General: FAQ
  • +AD1139: FAQ
  • +AD7091R Conversion Result Change
  • +AD1556: FAQ
  • +AD1580: FAQ
  • +AD1582: FAQ
  • +AD2S1200: FAQ
  • +AD2S1205: FAQ
  • +AD2S1210: FAQ
  • +AD2S75: FAQ
  • +AD2S80: FAQ
  • +AD2S80A: FAQ
  • +AD2S82A: FAQ
  • +AD2S83: FAQ
  • +AD2S90: FAQ
  • +AD2S99: FAQ
  • +AD4110-1: FAQ
  • +AD411x: FAQ
  • +AD5940: FAQ
  • +AD598: FAQ
  • +AD650: FAQ
  • +AD652: FAQ
  • +AD654: FAQ
  • +AD7091: FAQ
  • +AD7091R-X: FAQ
  • +AD711: FAQ
  • +AD7124-4: FAQ
  • +AD7124-8: FAQ
  • +AD7134: FAQ
  • +AD713: FAQ
  • +AD7142: FAQ
  • +AD7147: FAQ
  • +AD7148: FAQ
  • +AD7150: FAQ
  • +AD7151: FAQ
  • +AD7175-2: FAQ
  • +AD7176-2: FAQ
  • +AD7176: FAQ
  • +AD717x: FAQ
  • +AD7190: FAQ
  • +AD7192: FAQ
  • +AD7193: FAQ
  • +AD7195: FAQ
  • +AD719x: FAQ
  • +AD7265: FAQ
  • +AD7266: FAQ
  • +AD7280: FAQ
  • +AD7291: FAQ
  • +AD7298: FAQ
  • +AD7305: FAQ
  • +AD7321: FAQ
  • +AD7323: FAQ
  • +AD7328: FAQ
  • +AD7366-5: FAQ
  • +AD7367: FAQ
  • +AD736ARZ: FAQ
  • +AD737: FAQ
  • +AD738x : FAQ
  • +AD7398: FAQ
  • +AD7400A: FAQ
  • +AD7401: FAQ
  • +AD7403: FAQ
  • +AD74111: FAQ
  • +AD7415: FAQ
  • +AD7416: FAQ
  • +AD7417: FAQ
  • +AD7418: FAQ
  • +AD7450: FAQ
  • +AD7475: FAQ
  • +AD7484: FAQ
  • +AD7490: FAQ
  • +AD7492: FAQ
  • +AD75019: FAQ
  • +AD7503: FAQ
  • +AD7541A: FAQ
  • +AD7546: FAQ
  • AD7547: FAQ
  • +AD7568: FAQ
  • +AD7578: FAQ
  • +AD7606-4: FAQ
  • +AD7606: FAQ
  • +AD7606B: FAQ
  • +AD7606C: FAQ
  • +AD7608: FAQ
  • +AD7616 FAQ
  • +AD7616-P: FAQ
  • +AD7621: FAQ
  • +AD7625: FAQ
  • +AD7626: FAQ
  • +AD7631: FAQ
  • +AD7653: FAQ
  • +AD7654: FAQ
  • +AD7655: FAQ
  • +AD7656: FAQ
  • +AD7657-1: FAQ
  • +AD7663: FAQ
  • +AD7674: FAQ
  • +AD7675: FAQ
  • +AD7678: FAQ
  • +AD7682: FAQ
  • +AD7683: FAQ
  • +AD7684: FAQ
  • +AD7685: FAQ
  • +AD7688: FAQ
  • +AD7689: FAQ
  • +AD7690: FAQ
  • +AD7691: FAQ
  • +AD7705: FAQ
  • +AD7706: FAQ
  • +AD7707: FAQ
  • +AD7708: FAQ
  • +AD7709: FAQ
  • +AD7710: FAQ
  • +AD7711A: FAQ
  • +AD7712: FAQ
  • +AD7713: FAQ
  • +AD7714: FAQ
  • +AD7714YN: FAQ
  • +AD7715: FAQ
  • +AD7716: FAQ
  • +AD7718: FAQ
  • +AD7719: FAQ
  • +AD7720: FAQ
  • +AD7722: FAQ
  • +AD7725: FAQ
  • +AD7730: FAQ
  • +AD7731: FAQ
  • +AD7732: FAQ
  • +AD7738: FAQ
  • +AD7740: FAQ
  • +AD7741: FAQ
  • +AD7745: FAQ
  • +AD7746: FAQ
  • +AD7747: FAQ
  • +AD7760: FAQ
  • +AD7763: FAQ
  • +AD7766: FAQ
  • +AD7768: FAQ
  • +AD777x: FAQ
  • +AD7780: FAQ
  • +AD7785: FAQ
  • +AD7787: FAQ
  • +AD7788: FAQ
  • +AD7790: FAQ
  • +AD7792: FAQ
  • +AD7793: FAQ
  • +AD7794: FAQ
  • +AD7795: FAQ
  • +AD7798: FAQ
  • -AD7799: FAQ
    • AD7799: Changing channels
    • AD7799 AVDD Monitor 1.17V Internal Reference
    • AD7799: Problems with communications via serial interface
    • AD7799: SPI issue
    • I have a question about the timing of AD7799.
    • Gain Drift over time
    • Cypress USB Code - USB-cy7c68013A
  • +AD7805: FAQ
  • +AD7808: FAQ
  • +AD7809: FAQ
  • +AD780: FAQ
  • +AD7811: FAQ
  • +AD7812: FAQ
  • +AD7817: FAQ
  • +AD7819: FAQ
  • +AD7821: FAQ
  • +AD7825: FAQ
  • +AD7829: FAQ
  • +AD7835: FAQ
  • +AD7849: FAQ
  • +AD7851: FAQ
  • +AD7854: FAQ
  • +AD7856: FAQ
  • +AD7858: FAQ
  • +AD7859: FAQ
  • +AD7864: FAQ
  • +AD7865 : FAQ
  • +AD7872: FAQ
  • +AD7874: FAQ
  • +AD7879: FAQ
  • +AD7887: FAQ
  • +AD7888: FAQ
  • +AD7891-1: FAQ
  • +AD7891: FAQ
  • +AD7893-2: FAQ
  • +AD7895: FAQ
  • +AD7896: FAQ
  • +AD7899: FAQ
  • +AD7912: FAQ
  • +AD7921: FAQ
  • +AD7924: FAQ
  • +AD7927: FAQ
  • +AD7938: FAQ
  • +AD7942: FAQ
  • +AD7949: FAQ
  • +AD7960: FAQ
  • +AD7961: FAQ
  • +AD797: FAQ
  • +AD7980: FAQ
  • +AD7982: FAQ
  • +AD7984: FAQ
  • +AD7986: FAQ
  • +AD7988-1: FAQ
  • +AD7993: FAQ
  • +AD7994: FAQ
  • +AD7997: FAQ
  • +AD7998: FAQ
  • +ADA2200: FAQ
  • +ADAS1000: FAQ
  • +ADAS3022: FAQ
  • +ADAS3023: FAQ
  • +ADC: FAQ
  • +ADVFC32: FAQ
  • +EVAL-AD7719-EB: FAQ
  • +EVAL-ADAS3022EDZ: FAQ
  • +RDC1740: FAQ
  • +AD4080: FAQ
  • +AD4114: FAQ
  • +AD4116: FAQ
  • +AD4130-8 FAQ
  • +AD4134 FAQ
  • +AD4170: FAQ
  • +AD4858
  • +AD7175-8: FAQ
  • AD73360: FAQ
  • +AD73360AR: FAQ
  • +AD73360L: FAQ
  • +AD7357: FAQ
  • +AD7386-4: FAQ
  • +AD738x-4: FAQ
  • AD7398 SPI Voltage vs VCC
  • +AD7457: FAQ
  • +AD7609: FAQ
  • +AD7656-1: FAQ
  • AD7660: FAQ
  • +AD7665: FAQ
  • +AD7680: FAQ
  • +AD7764: FAQ
  • +AD7778: FAQ
  • AD7892: FAQ
  • +AD7980SRMZ-EP: FAQ
  • +AD7991: FAQ
  • +AD9243: FAQ
  • +AD9260: FAQ
  • +AD9261: FAQ
  • +AD9262: FAQ
  • +AD974: FAQ
  • +AD976A: FAQ
  • +AD977A: FAQ
  • +ADAQ4003: FAQ
  • +ADAQ7768-1: FAQ
  • +ADAQ8092 FAQ
  • +DC590, DC2026, QuikEval: FAQs
  • +Legacy LTC - Sigma Delta ADCs FAQ
  • +LTC2408: FAQ
  • +LTC2497: FAQ
  • +MAX1028: FAQ
  • +MAX1036: FAQ
  • +MAX1037EKA+: FAQ
  • +MAX11040GUU+: FAQ
  • +MAX11043: FAQ
  • +MAX11045: FAQ
  • +MAX11046 16-BIT AD: FAQ
  • +MAX11048: FAQ
  • +MAX11100EUB+: FAQ
  • +MAX11101: FAQ
  • +MAX11103: FAQ
  • +MAX11108: FAQ
  • MAX11125: FAQ
  • +MAX11125ATI+: FAQ
  • +MAX11130: FAQ
  • +MAX11131ATI+: FAQ
  • +MAX11136ATI+: FAQ
  • +MAX11150EVKIT#: FAQ
  • +MAX11154: FAQ
  • MAX11156: FAQ
  • +MAX11156ETC+: FAQ
  • +MAX11158: FAQ
  • +MAX11163: FAQ
  • +MAX11168EUB+: FAQ
  • +MAX11169EUB+: FAQ
  • +MAX11190: FAQ
  • +MAX11190ATE+: FAQ
  • MAX11192: FAQ
  • +MAX11192EVKIT#: FAQ
  • +MAX11200: FAQ
  • +MAX11200EEE+: FAQ
  • +MAX11201: FAQ
  • +MAX11203EEE+: FAQ
  • +MAX11206: FAQ
  • +MAX11207EEE+: FAQ
  • MAX11210: FAQ
  • +MAX11210EEE+: FAQ
  • +MAX11213EEE+T: FAQ
  • MAX11214: FAQ
  • MAX11214EUG+: FAQ
  • +MAX11214EUG+_T1: FAQ
  • +MAX11216: FAQ
  • +MAX11254ATJ+: FAQ
  • +MAX11254EVKIT#: FAQ
  • +MAX11259AWX+T: FAQ
  • +MAX11259PMB#: FAQ
  • +MAX11261BOB#: FAQ
  • +MAX11261ENX+: FAQ
  • +MAX11270EUG+: FAQ
  • +MAX11337ATJ+: FAQ
  • +MAX11410ATI+: FAQ
  • +MAX11608: FAQ
  • +MAX11609EEE+: FAQ
  • +MAX11612EUA+: FAQ
  • +MAX11612EVSYS: FAQ
  • +MAX11614EEE+: FAQ
  • +MAX11615EEE+C78: FAQ
  • +MAX11615EWE+: FAQ
  • +MAX11616EEE+: FAQ
  • +MAX11617EWE+: FAQ
  • +MAX11625: FAQ
  • +MAX11629EEE+: FAQ
  • +MAX11645EWC+T: FAQ
  • +MAX11647EUA+: FAQ
  • +MAX11900: FAQ
  • MAX11905: FAQ
  • +MAX11905EVKIT#: FAQ
  • +MAX1202AEAP+: FAQ
  • +MAX1220: FAQ
  • +MAX1229: FAQ
  • +MAX1230BCEG+: FAQ
  • +MAX1231AEEG+: FAQ
  • +MAX1239EEE+: FAQ
  • +MAX1239KEEE+: FAQ
  • +MAX1239LEEE+: FAQ
  • +MAX1258: FAQ
  • +MAX1271ACNG+: FAQ
  • MAX1300: FAQ
  • +MAX1300BEUG+: FAQ
  • +MAX1301AEUP+: FAQ
  • +MAX13171: FAQ
  • MAX1343: FAQ
  • +MAX1343BETX+: FAQ
  • +MAX13487: FAQ
  • +MAX13488: FAQ
  • +MAX1379ATP+: FAQ
  • +MAX1383: FAQ
  • +MAX1447ECJ+: FAQ
  • MAX14571: FAQ
  • +MAX14571EUD+: FAQ
  • MAX14574EWL+: FAQ
  • +MAX14574EWL+T: FAQ
  • +MAX14578: FAQ
  • +MAX14579EEVKIT#: FAQ
  • +MAX14588ETE+T: FAQ
  • +MAX145ACPA+: FAQ
  • +MAX1474: FAQ
  • +MAX14783: FAQ
  • +MAX14805: FAQ
  • +MAX14807ECB+: FAQ
  • +MAX14900D: FAQ
  • +MAX1645AEEI+: FAQ
  • +MAX16600GGN+: FAQ
  • +MAX17823AGCB+: FAQ
  • MAX17823AGCB/V+: FAQ
  • +MAX17823AGCB/V+T: FAQ
  • +MAX17823GCB+: FAQ
  • +MAX182BEWI+T: FAQ
  • +MAX19777AZA+: FAQ
  • +MAX31865: FAQ
  • +MAX31865AAP+: FAQ
  • +Precision Technology Learning Modules
  • Programming FMC FRU ID EEPROM on Linux

AD7799: Changing channels

Question

Works 100% in a single channel application. Am trying to switch channels on the
fly. Will allow me to change channels on initialisation but not during run
time?

Answer

When the channel is changed with this family of products, the ADC is
automatically reset. So, the first conversion after a channel change will
always be valid. The time for the first conversion after the channel change is
2/Fadc while subsequent conversions will occur at Fadc.

Assuming that you are operating the AD7799 in continuous conversion mode, and
at the same update rate for each channel, switching channel involves a write to
the AD7799 configuration register. The following sequence should be followed:

(1).Write 0x0710 to the configuration register to enable AIN1(+) - AIN1(-) in
bipolar mode, buffer enabled, at a gain of 128.

(2).Continuously read the DRDY pin on the AD7799. When this pin goes low it
means that valid data from the enabled channel is available and can be read
form the AD7799 data register.

(3).Read and record the data from the data register.

Repeat steps 2 and 3 until you want to change channel and gain.

(4).If you now want to change channel, (to channel 2) write 0x0011 to the
configuration register to enable AIN2(+) -AIN2(-), bipolar mode, buffer enabled
at a gain of 1.

Repeat steps 2 and 3 until you want to change channel and gain. (Go back to
step 1)

Tags: precision adcs 5FAN0108 ad7799
  • Share
  • History
  • Cancel
analog-devices logo

About Analog Devices

  • Who We Are
  • Careers
  • Newsroom
  • What We Do (Signals+)
  • Investor RelationsExternalLink
  • Quality & Reliability
  • Sales and Distribution
  • What's New on Analog.com
  • Contact Us

Find Help

  • Support
  • Resources
  • WikiExternalLink
  • Analog Dialogue

Get the Latest News

Stay up to date with our latest news and articles about Analog Devices' products, design tools, trainings, and events.

Sign Up Now
  • Instagram page
  • Twitter page
  • Linkedin page
  • Youtube page
  • Facebook
  • Legal and Risk
  • Accessibility
  • Privacy Policy
  • Privacy Settings
  • Cookie Settings
沪ICP备09046653号-1

©2025 Analog Devices, Inc. All Rights Reserved

analog-devices

About Analog Devices

Down Up
  • Who We Are
  • Careers
  • Newsroom
  • What We Do (Signals+)
  • Investor RelationsExternalLink
  • Quality & Reliability
  • Sales and Distribution
  • What's New on Analog.com
  • Contact Us

Find Help

Down Up
  • Support
  • Resources
  • WikiExternalLink
  • Analog Dialogue

Get the Latest News

Stay up to date with our latest news and articles about Analog Devices' products, design tools, trainings, and events.

Instagram page Facebook Twitter page Linkedin page Youtube page
  • Legal and Risk
  • Accessibility
  • Privacy Policy
  • Privacy Settings
  • Cookie Settings
沪ICP备09046653号-1

©2025 Analog Devices, Inc. All Rights Reserved