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

5.2 Enable Input Connections

The AMP EN jumper (J4) controls the amplifiers disable function on pin 3 of the device. It is set to V+ by default using resistor R13 and can be shorted to V- with jumper J5.

For high-speed testing, C4 can be replaced with 0 Ω to terminate the PD SMA input with a 50 ohm resistor in R10. The shorting block should be removed from J5 during high-speed testing. Because 0 Ω at C4 terminates to the ground and not to the supplies. The state of the amplifier will be undefined when the signal source is disconnected. For this reason, 0 Ω at C4 should only be used when driving the SMA connector with a high speed, controlled impedance source.