SBASAU9 October   2024 ADC3908D025 , ADC3908D065 , ADC3908D125 , ADC3908S025 , ADC3908S065 , ADC3908S125

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics - Power Consumption
    6. 6.6  Electrical Characteristics - DC Specifications
    7. 6.7  Electrical Characteristics - AC Specifications (25 MSPS)
    8. 6.8  Electrical Characteristics - AC Specifications (65 MSPS)
    9. 6.9  Electrical Characteristics - AC Specifications (125 MSPS)
    10. 6.10 Timing Requirements
    11. 6.11 Output Interface Timing Diagram
    12. 6.12 Typical Characteristics: 25MSPS
    13. 6.13 Typical Characteristics - 65MSPS
    14. 6.14 Typical Characteristics - 125MSPS
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Analog Input
        1. 7.3.1.1 Single Ended Input
        2. 7.3.1.2 Differential Input
        3. 7.3.1.3 Analog Input Bandwidth
      2. 7.3.2 Sampling Clock Input
      3. 7.3.3 Digital Interface
        1. 7.3.3.1 Test Pattern
        2. 7.3.3.2 Interface Configuration using Pin Control
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation
      2. 7.4.2 Power Down
  9. 8 Application Information Disclaimer
    1. 8.1 Typical Application
      1. 8.1.1 Design Requirements
      2. 8.1.2 Detailed Design Procedure
        1. 8.1.2.1 Input Signal Path
        2. 8.1.2.2 Sampling Clock
      3. 8.1.3 Application Curves
    2. 8.2 Initialization Set Up
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

7.3.1 Analog Input

The analog inputs of ADC3908Dx and ADC3908Sx supports differential and single-ended configuration, with support for AC coupling and DC coupling. Analog inputs are designed for an input common mode voltage of 1.25V which must be provided externally on each input pin. DC-coupled input signals must have a common mode voltage that meets the device input common mode voltage range.

The ADC3908Dx and ADC3908Sx has buffered analog inputs which eases design by isolating the input from the ADC sampling operation.