A good PCB layout for the LM4864MM involves keeping the input and output traces short and away from each other, using a solid ground plane, and placing the decoupling capacitors close to the device. A 4-layer PCB with a dedicated power plane and a dedicated ground plane is recommended.
The choice of gain resistors depends on the desired gain and input impedance. A higher gain resistor value will result in a higher gain, but may also increase noise and distortion. A good starting point is to use the recommended values in the datasheet, and then adjust based on the specific application requirements.
The maximum power dissipation of the LM4864MM is dependent on the ambient temperature and the thermal resistance of the package. According to the datasheet, the maximum power dissipation is 1.4W at 25°C ambient temperature. However, this can be derated based on the actual operating conditions.
Yes, the LM4864MM can be used in a single-supply configuration. However, this will affect the output voltage swing and the input common-mode range. The datasheet provides guidance on how to configure the device for single-supply operation.
The LM4864MM has a built-in filter capacitor, but additional filtering may be required depending on the application. A simple RC filter or a more complex active filter can be used to filter out noise and ripple. The choice of filter depends on the frequency range of interest and the desired attenuation.
LM4864MM datasheet
by Texas Instruments
