SLLSFI7 October   2020 SN65HVD64

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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
    6. 6.6 Switching Characteristics
    7. 6.7 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Coaxial Interface
      2. 8.3.2 Reference Input
      3. 8.3.3 RS-485 Direction Control
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Driver Amplitude Adjust
      2. 9.1.2 Direction Control
      3. 9.1.3 Direction Control Time Constant
      4. 9.1.4 Conversion Between dBm and Peak-to-Peak Voltage
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary

Package Options

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

9.1.4 Conversion Between dBm and Peak-to-Peak Voltage

Equation 2. dBm = 20 × LOG10 [Volts-pp / SQRT(0.008 × Zo)] = 20 × LOG10 [VPP / 0.63] for Zo = 50 Ω
Equation 3. VPP = SQRT(0.008 × Zo) × 10(dBm/20) = 0.63 × 10(dBm/20) for Zo = 50 Ω

Table 9-1 shows conversions between dBm and peak-to-peak voltage with a 50-Ω load, for various levels of interest including reference levels from the 3GPP TS 25.461 Technical Specification.

Table 9-1 Conversions Between dBM and Peak-to-Peak Voltage
SIGNAL ON COAXdBmVPP
Maximum Driver ON Signal51.12
Nominal Driver ON Signal30.89
Minimum Driver ON Signal10.71
AISG Maximum Receiver Threshold–120.16
Nominal Receiver Threshold–150.11
Minimum Receiver Threshold–180.08
Maximum Driver OFF Signal–400.006