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 input and output signals.
Proper biasing is critical for the LMH6601QMG. Ensure that the input common-mode voltage is within the recommended range (typically 1.5V to 3.5V), and that the output common-mode voltage is set to the desired level using the VOCM pin. Also, ensure that the power supply voltage is within the recommended range (typically 3.3V to 5V).
The maximum input signal amplitude that the LMH6601QMG can handle is typically limited by the device's input voltage range and the desired output signal integrity. As a general rule, the input signal amplitude should be limited to 2Vpp or less to ensure optimal performance and prevent distortion.
The LMH6601QMG has a relatively high bandwidth, which can make it susceptible to noise and unwanted signals. To filter out noise, use a low-pass filter or a band-pass filter at the output stage, depending on the specific application requirements. Additionally, ensure that the PCB layout is designed to minimize electromagnetic interference (EMI) and radio-frequency interference (RFI).
The LMH6601QMG has a relatively high power dissipation, especially at high frequencies. To ensure reliable operation, implement a thermal management strategy that includes a heat sink, thermal vias, and a thermal pad on the PCB. Ensure that the device is operated within the recommended junction temperature range (typically -40°C to 125°C).
LMH6601QMG/NOPB datasheet
by Texas Instruments
Findchips
Findchips