LMH2180TM/NOPB datasheet by Texas Instruments

LMH2180TM/NOPB Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of the LMH2180?
  Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general high-frequency PCB design guidelines, such as using a solid ground plane, minimizing trace lengths, and using 50-ohm transmission lines for the input and output signals.
• How do I ensure the LMH2180 is properly biased for optimal performance?
  The LMH2180 requires a specific bias voltage and current to operate optimally. Ensure that the VCC pin is connected to a stable 5V power supply, and the ISET pin is connected to a resistor that sets the desired output current. Refer to the datasheet for specific biasing requirements.
• What is the maximum input signal amplitude that the LMH2180 can handle?
  The LMH2180 can handle input signal amplitudes up to 2Vpp, but it's recommended to limit the input signal to 1.5Vpp to ensure optimal performance and prevent distortion.
• How do I reduce the noise and jitter in the LMH2180 output signal?
  To reduce noise and jitter, ensure that the power supply is well-regulated and decoupled, use a low-noise reference clock, and minimize the length of the output signal traces. Additionally, consider using a output filter or a clock jitter cleaner to further reduce noise and jitter.
• Can I use the LMH2180 in a non-50-ohm system?
  While the LMH2180 is designed for 50-ohm systems, it can be used in non-50-ohm systems with some adjustments. However, this may require additional impedance matching networks and may affect the device's performance. Consult the datasheet and application notes for more information.