DESCRIPTION
The GS3018 contains Gennums GR504 class D preamplifier chip, six capacitors and one resistor. Capacitor C1 on the hybrid, in conjunction with RMIC on the GR504 chip, form a high pass filter which provides a very well regulated supply voltage for the microphone. Resistor R1, capacitor C2 and the output impedance of the microphone (≈ 4 kΩ) also form a high pass filter with a corner frequency of approximately 240 Hz.

FEATURES
• incorporates GR504, 3 stage amplifer chip
• designed to drive class D integrated receivers
• adjustable symmetrical peak clipper for MPO control
• two low noise inverting preamplifiers
• mid-supply referenced output stage
• anti-aliasing filter network