- Tytuł:
- FET input voltage amplifier for low frequency noise measurements
- Autorzy:
-
Achtenberg, Krzysztof
Mikołajczyk, Janusz
Bielecki, Zbigniew - Powiązania:
- https://bibliotekanauki.pl/articles/221854.pdf
- Data publikacji:
- 2020
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
low noise amplifier
low frequency noise measurements
field effect transistors
FET voltage noise
FET input amplifier - Opis:
- The paper presents a low noise voltage FET amplifier for low frequency noise measurements. It was built using two stages of an op amp trans impedance amplifier. To reduce voltage noise, eight-paralleled low noise discrete JFETs were used in the first stage. The designed amplifier was then compared to commercial ones. Its measured value of voltage noise spectral density is around 24 nV/√Hz, 3 nV/√Hz, 0.95 nV/√Hz and 0.6 nV/√Hz at the frequency of 0.1, 1, 10 and 100 Hz, respectively. A -3dB frequency response is from ~20 mHz to ~600 kHz.
- Źródło:
-
Metrology and Measurement Systems; 2020, 27, 3; 531-540
0860-8229 - Pojawia się w:
- Metrology and Measurement Systems
- Dostawca treści:
- Biblioteka Nauki
Artykuł