Datasheet Summary
Class A Amplifier with 2 Independent Gain Blocks
GP509 DATA SHEET
Features
- low amplifier current (typical 105 µA)
- low noise and distortion
- 1.0 to 5 VDC operating range
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DESCRIPTION The GP509 is a Class A amplifier utilizing Gennum’s proprietary low voltage JFET technology. It consists of a singleended, low noise inverting gain block, a Class A output stage, and an on-chip microphone decoupling resistor. Block A typically has an open loop voltage gain of 56 dB, with the closed loop gain set by the ratio of the feedback resistor to the source impedance. It is remended that the maximum closed loop gain be 20 dB lower than the open loop gain. All blocks of the...