TIDUEW8 August   2022

 

  1.   Description
  2.   Resources
  3.   Features
  4.   Applications
  5.   5
  6. 1System Description
    1. 1.1 Key System Specifications
  7. 2System Overview
    1. 2.1 Schematic Diagram
    2. 2.2 Highlighted Products
      1. 2.2.1 THS3491 Current Feedback Amplifier Specifications
    3. 2.3 System Design Theory
      1. 2.3.1 Theory of Operation
        1. 2.3.1.1 Concept of Power Supply Range Extension
      2. 2.3.2 Stability Considerations
        1. 2.3.2.1 Inclusion of Series Isolation Resistance (RS)
      3. 2.3.3 Power Dissipation
        1. 2.3.3.1 DC Internal Power Dissipation of Driver Amplifier for a Purely Resistive Output Load
        2. 2.3.3.2 AC Average Internal Power Dissipation of Driver Amplifier for a Purely Resistive Output Load
        3. 2.3.3.3 Internal Average Power Dissipation of Driver Amplifier for RC Output Load
      4. 2.3.4 Thermal Performance
        1. 2.3.4.1 Linear Safe Operating Area (SOA)
  8. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Required Hardware
    2. 3.2 Test Setup
    3. 3.3 Test Results
  9. 4Design Files
    1. 4.1 Schematics
    2. 4.2 Bill of Materials
    3. 4.3 PCB Layout Recommendations
      1. 4.3.1 Layout Prints
    4. 4.4 Altium Project
    5. 4.5 Gerber Files
    6. 4.6 Assembly Drawings
  10. 5Related Documentation
    1. 5.1 Trademarks

1.1 Key System Specifications

Table 1-1 lists key specifications for this design.

Table 1-1 Key System Specifications
PARAMETER SPECIFICATIONS DETAILS
Supply voltage ±32 V See Section 2.3.1.1
Output load type 100 Ω See Section 3.2

1 nF (Riso = 50 Ω)
Target bandwidth (BW) f = 100 MHz at 20 Vpp See Section 3.3
f = 1 MHz at 50 Vpp See Section 3.3
HD2, HD3 < –75 dBc at 1 MHz (Vo = 50 Vpp) See Section 3.3
Steady-state or quiescent current consumption About 50 mA for three amplifiers on a ±16-V supply See the THS3491 data sheet
Maximum operating temperature Maximum operating temperature dependent upon the internal device power dissipation to limit TJ(MAX)< 150°C See Section 2.3.3
Form factor 85 mm × 48 mm See Section 4