Simulated experiment research on SESD interference with integrated operational amplifier
2017
Space electrostatic discharge (SESD) interference can result in
soft errors to space-borne electronics and ultimately may lead to
equipment or system anomalies or even whole-spacecraft failure. So
far not much research work has been done on susceptibility of spacecraft
equipment, especially typical electronic devices, to SESD interference.
In this paper ESD generator is utilized to simulate SESD and investigate
the response of LM124 OPAMP, a typical analog IC, to discharge interference.
Results show that the output of LM124 may generate anomalous transient,
the characteristics of which are related to device configurations,
bias conditions and ESD voltage. Subjected to simulated SESD, voltage
comparator only generates single polarity pulse. Voltage follower
and non-inverter behave similarly. Inverter shows the least sensitivity.
Sinusoidal waveform from a signal generator is injected to the input
pins of LM124 to evaluate its EMI susceptibility. Analysis shows that
the amplitude and duration of output pulse are strongly associated
with input interference amplitude and frequency. This work has guiding
significance to the intensive study of SESD effects on various typical
devices, understanding the mechanism of spacecraft anomalies attributed
to SESD and developing targeted protective measures.
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