TIDA-070004 Reference Design

Texas Instruments

Space-grade reference design using integrated digital-output temperature sensor

Description

This reference design 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.

Features
  • Local temperature sensing with ±2 °C accuracyRemote temperature sensing with ±1.5 °C accuracyUltra-low power radiation hardened MCUI2C temperature sensor output(TMP461-SP)SPI-based slave interface to host
Applications
  • Communications payload
  • Radar imaging payload
  • Optical imaging payload
  • Command & data handling (C&DH)
  • Satellite electrical power system (EPS)
Product Categories
  • Data converters