Embodiments of the present invention described and shown in the
specification and drawings include a combination responsive to an
acoustic wave that can be utilized as a dynamic pressure sensor. In one
embodiment of the present invention, the combination has a substrate
having a first surface and an opposite second surface, a microphone
positioned on the first surface of the substrate and having an input and
a first output and a second output, wherein the input receives a biased
voltage, and the microphone generates an output signal responsive to the
acoustic wave between the first output and the second output. The
combination further has an amplifier positioned on the first surface of
the substrate and having a first input and a second input and an output,
wherein the first input of the amplifier is electrically coupled to the
first output of the microphone and the second input of the amplifier is
electrically coupled to the second output of the microphone for receiving
the output signal from the microphone. The amplifier is spaced from the
microphone with a separation smaller than 0.5 mm.