SBAS427D February   2008  – June 2024 AMC1203

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5.   Device Comparison Table
  6. 4 Pin Configuration and Functions
  7. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Power Ratings
    6. 5.6  Insulation Specifications
    7. 5.7  Safety-Related Certifications
    8. 5.8  Safety Limiting Values
    9. 5.9  Electrical Characteristics
    10. 5.10 Switching Characteristics
    11. 5.11 Timing Diagram
    12. 5.12 Typical Characteristics
  8. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Analog Input
      2. 6.3.2 Modulator
      3. 6.3.3 Digital Output
    4. 6.4 Device Functional Modes
  9. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Shunt Resistor Sizing
        2. 7.2.2.2 Input Filter Design
        3. 7.2.2.3 Bitstream Filtering
      3. 7.2.3 Application Curve
    3. 7.3 Best Design Practices
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 Layout Example
  10. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  11. 9 Revision History
  12. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Mechanical Data

Package Options

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

6.3.3 Digital Output

A differential input signal of 0V ideally produces a stream of ones and zeros that are high 50% of the time. A differential input of 280mV produces a stream of ones and zeros that are high 93.75% of the time. With 16 bits of resolution, that percentage ideally corresponds to code 62440. A differential input of –280mV produces a stream of ones and zeros that are high 6.25% of the time and ideally results in code 4096. The ±280mV range is the specified linear range of the AMC1203. If the input voltage value exceeds ±280mV, the output of the modulator shows increasingly nonlinear behavior as the quantization noise increases. The modulator output clips with a constant stream of zeros with an input ≤ –320mV or with a constant stream of ones with an input ≥ 320mV. Figure 6-3 shows the input voltage versus the output modulator signal.

AMC1203 Modulator Output vs Analog Input Figure 6-3 Modulator Output vs Analog Input

Calculate the density of ones in the output bitstream with Equation 1 for any input voltage value of VIN, where VIN = (VINP – VINN) :

Equation 1. ρ=VIN + VClipping2 × VClipping