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

8.2.1.2 Detailed Design Procedure

The TRF1208 is configured as an S2D amplifier. The section close to TRF1208 output is an attenuator pad that is meant for robust matching. The section close to AFE7950 is the matching network for the AFE that is channel dependent. The matching components are chosen based on the AFE return-loss data and some trial and error because the manufactured board parameters can influence the exact component values

Table 8-2 shows the bill of materials (BOM) values of the design for a channel that is matched to center frequency of 8.2 GHz.

Table 8-2 Component Values of RX Chain With Center Frequency = 8.2 GHz
SECTIONDESIGNATORTYPEVALUEPART NUMBERINSTALL / DNI
DC block capC117Capacitor100 nF530L104KTInstall
DC block capC115Capacitor100 nF530L104KTInstall
DC block capC111Capacitor100 nF530L104KTInstall
DC block capC122Capacitor100 nF530L104KTInstall
AttenuatorR74Resistor10 ΩERJ-1GEF10R0CInstall
AttenuatorR70Resistor10 ΩERJ-1GEF10R0CInstall
AttenuatorR69Resistor10 ΩERJ-1GEF10R0CInstall
AttenuatorR67Resistor10 ΩERJ-1GEF10R0CInstall
AttenuatorR71Resistor140 ΩERJ-1GNF1400CInstall
AttenuatorR68Resistor140 ΩERJ-1GNF1400CInstall
INM termR82Resistor50 ΩERJ-1GEF49R9CInstall
MatchingC91———DNI
MatchingL20———DNI
MatchingC103———DNI
MatchingC83———DNI
MatchingL22Inductor0.1 nHLQP03TG0N1B02#Install
MatchingL18Inductor0.1 nHLQP03TG0N1B02#Install
MatchingC96Inductor0.1 nHLQP03TG0N1B02#Install
MatchingC87Inductor0.1 nHLQP03TG0N1B02#Install
MatchingC97Capacitor0.8 pF02015J0R8PBSTRInstall
MatchingC88Capacitor0.8 pF02015J0R8PBSTRInstall
MatchingC92Inductor0.3 nHLQP03TG0N3B02#Install