Patent ID: 6744376
Filing Date: 2004-06-01
Classification: G08C

Abstract:
An integrated circuit for use in distributed data collection in a spacecraft comprising:a plurality of ports for receiving sensor signals, said ports being connected to a plurality of sensors in the spacecraft wherein at least one of said plurality of sensors is a temperature sensor wherein a temperature measurement does not require a voltage reference due to the presence of a low temperature coefficient resistor external to said integrated circuit; a multiplexer having a plurality of inputs and an output, each of said ports being connected to one of said inputs of said multiplexer; an analog-to-digital converter having an input and an output, said input of said analog-to-digital converter being connected to said output of said multiplexer, said analog-to-digital converter comprising a radiation-hardened comparator; a radiation-hardened voltage reference connected to said analog-to-digital converter; a memory connected to said output of said analog-to-digital converter; and a serial bus connected to said memory.