SBOU250 November   2020 THS4567

PRODUCTION DATA  

  1. 1Trademarks
  2. 2Features
  3. 3EVM Specifications
  4. 4Power Connections
    1. 4.1 Split-Supply Operation
    2. 4.2 Single-Supply Operation
  5. 5Input and Output Connections
    1. 5.1 VOCM and VICM Input Connections
    2. 5.2 Enable Input Connections
    3. 5.3 Example EVM Configuration Using the THS4567
  6. 6 RUN-FDA-4567-EVM Schematic, Layout, and Bill of Materials
    1. 6.1 RUN-FDA-4567-EVM Layers
    2. 6.2 Bill of Materials
  7. 7References

5 Input and Output Connections

The RUN-FDA-4567-EVM is equipped with SMA connectors for easy connection of signal generators and analysis equipment. For best results, voltage signals must be routed to and from the EVM with cables having 50-Ω characteristic impedance. Either IN+ (J2) or IN– (J1) can be used for single-ended input. The unused connector should be terminated with a 50-Ω resistive SMA load or balanced with an equivlaent resistive load to ground so that both input networks are the same impedance. Use both IN+ (J2) and IN– (J1) for differential voltage input or diode D1 for a differential diode input. OUT+ (J8) or OUT- (J9) can be used for single ended output in conjunction with transformer T1 by terminating the opposite output to ground using R8 or R18 respectively. A resistor network (R5, R6, R7, R15, and R16) provides a load matching network to the amplifier to allow for a larger amplifier load while maintaining a desired terminated characteristic output impedace. For single ended output measurements 50-Ω line-impedance match at the output should be preserved.