Authors: Simeonov, L.I.
Reference: Proc. of the Nat.Conf. with Intern.Part.: ELECTRONICA`98,
Botevgrad,313-317, 1998
Abstract:
Presented are results from laboratory performance tests of a
monolithic, multichannel and multiplexing low-noise charge-sensitive
electronics for the readout of solid-state detectors for particle
experiments. The electronics provides signal amplification, parallel
data storage and serial readout. Switched capacitor technique by
multi-correlating sampling and simultaneous second-stage amplification
is used for noise-reduction. Power consumption is controlled by an
externally applied reference voltage, which allows an optimization of
speed and noise over the power consumption for the individual needs of
the particular experiment. The electronics consists of two monolithic
chips, CAMEX ? CMOS Multichannel Analog Multiplexer and TIMEX ? a
digital steering chip. The tests were carried out with the idea of
reorganizing of the chips for the purposes of the time-of-flight
particle analyzers for space applications. The tests included precise
estimation of the charge-amplification per channel, linearity, readout
frequency, radiation hardness, temperature stability, noise behavior,
offset, crosstalk with big input teat signals ? both voltage and charge,
estimation of the sampling capacitor number, etc., showed, that on the
basis of the original a new modification of the chip is possible and
necessary to be developed, according to the requirements of the
particular space experiment.