DESCRIPTION
The GC509 is a Class A amplifier utilizing Gennum’s proprietary low voltage JFET technology. It consists of two singleended, low noise inverting gain blocks, a Class A output stage, and an on-chip microphone decoupling resistor.

FEATURES
• 145 µA typical current drain
• low noise and distortion
• 1.0 to 5 VDC operating range
• 2 independent preamplifiers
• Class A output stage
• variable transducer current
• 4 kΩ microphone decoupling resistor