Space-grade design using integrated digital-output temperature sensor

1st November 2019
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This reference design from Texas Instruments illustrates the fact that several spacecraft projects provide a system health status telemetry that ground personnel monitor in real time. This reference design shows an example using a digital output temperature sensor to acquire temperature data on a sub-system using a radiation hardened MSP430FR5969-SP microcontroller (MCU). 

This system implements a SPI based slave that responds to a host request for temperature data using a simple register read/write protocol. The reference design includes a TMP461-SP with local temperature sensing and remote diode temperature sensing of an ADC12D1620QML-SP. 

The board used for this reference design is the TSW12D1620EVM-CVAL. This approach can be used as a starting point for a remote subsystem temperature and health monitor.

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