LMH6622MM datasheet by Texas Instruments

LMH6622MM Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of the LMH6622MM?
  Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep the input and output traces as short as possible. Additionally, it's recommended to use a common-mode choke or a ferrite bead to filter out high-frequency noise.
• How do I ensure stability of the LMH6622MM in my design?
  To ensure stability, it's recommended to use a compensation capacitor (Cc) between pins 1 and 8, and to follow the recommended values for Rf and Rg in the datasheet. Additionally, the input and output impedance should be matched to the recommended values, and the power supply should be well-regulated and decoupled.
• What is the maximum operating temperature range for the LMH6622MM?
  The LMH6622MM is rated for operation from -40°C to 125°C, but it's recommended to derate the maximum operating temperature to 85°C for most applications to ensure reliability and performance.
• Can I use the LMH6622MM as a unity-gain buffer?
  Yes, the LMH6622MM can be used as a unity-gain buffer by connecting the output directly to the input, and using a compensation capacitor (Cc) between pins 1 and 8. However, it's recommended to use a resistor (Rf) in series with the output to improve stability and reduce oscillations.
• How do I reduce electromagnetic interference (EMI) in my design using the LMH6622MM?
  To reduce EMI, it's recommended to use a shielded enclosure, and to keep the input and output traces as short as possible. Additionally, using a common-mode choke or a ferrite bead can help filter out high-frequency noise, and using a decoupling capacitor (Cdec) between the power supply and ground can help reduce noise coupling.