J. Phys. IV France 08 (1998) Pr3-205-Pr3-208
Low noise amplifier for an integrated SQUID electronics operating in liquid nitrogenJ. Kunert1, V. Zakosarenko1, V. Schultze1, H.-G. Meyer1, F. Nitsche2 and H. Wenske2
1 Institut für Physikalische Hochtechnologie e.V., Abteilung Kryoelektronik, Postfach 100 239, 07702 Jena, Germany
2 MAZeT GmbH, Thüringen, In den Weiden 7, 99099 Erfurt, Germany
A set of components for a direct coupled SQUID electronics was designed and fabricated in silicon semiconductor BiCMOS technology and optimized for liquid nitrogen temperature. The most crucial part, the preamplifier has a white noise level of 0.44nV/√Hz and shows small power dissipation. A complete liquid nitrogen cooled SQUID electronics operates successfully with a HTS dc-SQUID.
© EDP Sciences 1998