The JFE2140 is a ultra-low noise, matched-input pair N-type JFET designed to create low-noise gain stages for very high output impedance sensors or microphones. Advanced, high precision processing technology gives the JFE2140 tight channel-to-channel matching, extremely low-noise performance, a high gm/C_ISS ratio, and ultra-low gate-current performance. The integrated Input-protection diodes clamp high-voltage spurious input signals without the need for additional input diodes that can add leakage current or distortion-creating nonlinear capacitance. The JFE2140 provides a next-generation device to implement low-noise amplifiers for piezoelectric sensors, transducers, large-area condenser microphones, and hydrophones in small-package options.