3 Noise

The JFE150 pre-amplifier circuit provides very high gain at 60 dB and a flat frequency response from approximately 16 Hz up to 43 kHz. The clean roll-off at the corner frequencies provides a natural-sounding filter for audio signals without sounding abrupt at the low and high ends. This closed-loop solution also offers very low input-referred noise of 1.99 nV/√Hz in the 1/f region at 10 Hz and 1.18 nV/√Hz in the broadband region at 1 kHz, as shown in Figure 3-1. Make sure to provide a clean power supply to this circuit to not degrade its remarkable performance.