SBOS972C october   2021  – august 2023 TRF1208

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  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: TRF1208
    6. 6.6 Electrical Characteristics: TRF1208B
    7. 6.7 Typical Characteristics: TRF1208
    8. 6.8 Typical Characteristics: TRF1208B
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Fully-Differential Amplifier
      2. 7.3.2 Single Supply Operation
    4. 7.4 Device Functional Modes
      1. 7.4.1 Power-Down Mode
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Driving a High-Speed ADC
      2. 8.1.2 Calculating Output Voltage Swing
      3. 8.1.3 Thermal Considerations
    2. 8.2 Typical Applications
      1. 8.2.1 TRF1208 in Receive Chain
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
      2. 8.2.2 TRF1208 in a Transmit Chain
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
    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 Device Support
      1. 9.1.1 Third-Party Products Disclaimer
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

8.1.2 Calculating Output Voltage Swing

This section gives a quick reference of the output voltage swings for different input power levels. In this example, the output is terminated with a 100‑Ω differential load and a power gain of 16 dB is assumed.

GUID-20210904-SS0I-V9H5-5417-DX6DS4151MBZ-low.svg Figure 8-4 Power and Voltage Levels
Equation 1. Voltage gain = 20 × log(VO / VI)
Equation 2. Power gain = 10 × log(PO / PI) = 10 × log((VO2 / 100) / (VI2 / 50)) = 20 × log(VO / VI) – 3 dB
Table 8-1 Output Voltage Swings for Different Input Power Levels
INPUT OUTPUT

(TRF1208)

 OUTPUT

(TRF1208B)
PI (dBm) VI (VPP) PO (dBm) VO (VPP) PO (dBm) VO (VPP)
–20 0.063 –4 0.564 –10 0.283
–15 0.112 1 1.004 –5 0.503
–10 0.2 6 1.785 0 0.894
–9 0.224 7 2.002 1 1.004