SLAS708A September   2010  – September 2019 ADS7947 , ADS7948 , ADS7949

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     ADS794x Block Diagram
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions: ADS794x (12-, 10-, 8-Bit)
    4. 7.4  Thermal Information
    5. 7.5  Electrical Characteristics: ADS7947 (12-Bit)
    6. 7.6  Electrical Characteristics: ADS7948 (10-Bit)
    7. 7.7  Electrical Characteristics: ADS7949 (8-Bit)
    8. 7.8  Timing Requirements
    9. 7.9  Switching Characteristics
    10. 7.10 Typical Characteristics: ADS7947, ADS7948, ADS7949
    11. 7.11 Typical Characteristics: ADS7947 (12-Bit)
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Multiplexer and ADC Input
      2. 8.3.2 Reference
      3. 8.3.3 Clock
      4. 8.3.4 ADC Transfer Function
      5. 8.3.5 Power-Down
    4. 8.4 Device Functional Modes
      1. 8.4.1 Device Operation
    5. 8.5 Programming
      1. 8.5.1 16-Clock Frame
      2. 8.5.2 32-Clock Frame
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Driving an ADC Without a Driving Op Amp
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Related Links
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

4 Revision History

Changes from * Revision (September 2010) to A Revision

  • Added Device Information table, ESD Ratings table, Recommended Operating Conditions table, Switching Characteristics table, Functional Block Diagram section, Feature Description section, Device Functional Modes section, Programming section, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section Go
  • Changed document titleGo
  • Changed QFN to WQFN throughout documentGo
  • Added High resolution, high throughput: Features bulletGo
  • Changed temperature range Features bullet from Fully Specified from to Extended temperature rangeGo
  • Changed Description section for clarity and changed ADC with an inherent sample-and-hold (S/H) input stage to ADCGo
  • Changed page 1 figure and added titleGo
  • Changed title of Family and Ordering Information to Device Comparison TableGo
  • Changed thermal symbols for RθJA, RθJC(top), RθJB, and RθJC(bot)Go
  • Deleted Full-scale input span, Absolute input range, External Reference, AVDD, and DVDD parameters and Temperature Range section from Electrical Characteristics: ADS7947 (12-Bit) tableGo
  • Deleted Full-scale input span, Absolute input range, External Reference, AVDD, and DVDD parameters and Temperature Range section from Electrical Characteristics: ADS7948 (10-Bit) table Go
  • Deleted Full-scale input span, Absolute input range, External Reference, AVDD, and DVDD parameters and Temperature Range section from Electrical Characteristics: ADS7949 (8-Bit) table Go
  • Changed Timing Requirements table: added section titles, moved switching parameters into Switching Characteristics table Go
  • Changed symbol for Pulse duration, SCLK low parameter from tW1 to tWLGo
  • Added symbol to SCLK frequency parameterGo
  • Changed title of PCB Layout/Schematic Guidelines to Layout and changed format of sectionGo
  • Changed Recommended ADC Schematic figureGo