Transcript Gago

Speaker: Fernando Gago Rodríguez (IAC)
Characterization of the OPA350 operational
amplifier at cryogenic temperatures
•EMIR is an infrared multiobject spectrograph and imager for the Gran
Telescopio de Canarias (GTC) in La Palma (Spain).
•Its electronics uses commercial off-the-shelf components working at
cryogenic temperatures to help keep signal integrity along the analogue
chain.
•The poster describes the
procedures and results of the
tests of the OPA350 operational
amplifier used in the EMIR fanout board working at 77K.
Speaker: Fernando Gago Rodríguez (IAC)
Characterization of the OPA350 operational
amplifier at cryogenic temperatures
•Several parameters are measured at cryogenic temperatures and
compared with datasheet values: input offset voltage, noise, bandwidth
and slew rate.
•Power on procedures and chip reliability at cryogenic temperatures are
also studied.
•These tests are part of a more ambitious
plan aimed at getting a database of chips
working at cryogenic temperatures.
Knowing their behavior when cold will
allow us to use them with guarantee.
Speaker: Fernando Gago Rodríguez (IAC)
Characterization of the OPA350 operational
amplifier at cryogenic temperatures
•Main conclusions:
•It is possible to use commercial chips at cryogenic temperatures
greatly simplifying low noise design.
•A detailed research of chip behavior at cryogenic temperature is
worthwhile for the future.
Come and visit the poster to
see results and procedures.
Your comments will be
welcome.