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TPA6140A2 DC Coupled Input

Other Parts Discussed in Thread: TPA6140A2

Question: I am considering DC Coupling the amplifier's inputs in my design.  Is this OK and will I face any problems?

Answer: The TPA6140A2 will work very well with DC coupled inputs.  The input circuitry was designed for optimum performance with AC coupling; however, the main thing that you may notice is that there is a slightly increased artifact when the amplifier is powered on or the SHUTDOWN function is exercised.  Since the audio artifact from this amplifier is extremely, a slight increase may not be a concer for you.

Please reveiw the datasheet for common mode voltage levels and the attached presentation for more details.

Rgds,

Fred