Very Low Noise Audio Amplifier

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60 dB Low Noise Audio Amplifier - jensign.com

https://www.jensign.com/60dBLowNoiseAudioAmplifier/index.html

Nov 05, 2020. The circuit below is a low noise low distortion 60 dB (Av=1000) gain block that can be used as an audio preamplifier for very low signal or noise measurements. A high performance LM4562NA dual op-amp is used. Each half …

Amazon.com: low noise amplifier

https://www.amazon.com/low-noise-amplifier/s?k=low+noise+amplifier

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A very low-noise FET input amplifier - NIST

https://tf.nist.gov/general/pdf/821.pdf

A low-noise amplifier has been designed utilizing a Toshiba 2SK117 N channel J-FET' as the input device in a cascode' configuration. Noise measurements on this amplifier yield a low-frequency noise current of 0.25 fA/m and a voltage noise of less than 1.2 nV/m in the 500 Hz to 500 kHz region. Bloyet, Lepaisant, and Varoquaux3 suggest a figure

Ultra low noise amplifiers - JanasCard

http://www.janascard.cz/PDF/Design%20of%20ultra%20low%20noise%20amplifiers.pdf

Amplifiers with bipolar transistor offer very low noise but have also some drawbacks – low input impedance and high input current noise, so they are suitable especially for signal sources with low output impedance, typically below 1 kOhm. If high input impedance or very low input noise current is necessary, an input stage with

LT1115 Datasheet and Product Info | Analog Devices

https://www.analog.com/en/products/lt1115.html

The LT1115 is the lowest noise audio operational amplifier available. This ultralow noise performance (0.9nV/√ Hz at 1kHz) is combined with high slew rates (>15V/µs) and very low distortion specifications. The RIAA circuit shown below using the LT1115 has very low distortion and little deviation from ideal RIAA response (see graph). Applications

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