Temperature sensor design challenges
Temperature monitoring and protection e-book
With over 40 years' experience helping customers optimize their temperature monitoring and protection designs, we've developed a comprehensive e-book covering six unique application challenges involving unique sensor placement and routing considerations. In the Temperature Monitoring and Protection e-book you will learn the design fundamentals of temperature sensing in real-world applications. The application notes and reference designs provide support and deep insights about the sensor selection process and the considerations required for optimal temperature response.
- Fundamentals of temperature sensing
- System temperature monitoring
- Ambient temperature monitoring
- Temperature threshold detection
- Temperature compensation and calibration
- Body temperature monitoring
- Fluid temperature monitoring
System temperature monitoring
For many system designs, it is necessary to monitor high-power components (processors, FPGAs, FETs, etc.) to ensure system and user safety. Accuracy of the temperature reading is important, as it enables designers to push performance closer to safety limits or reduce system costs by avoiding overdesigning elsewhere. Our broad portfolio of accurate compact temperature sensors allows the closest placement to these critical components for the most accurate measurements.
System temperature monitoring resources
|How to monitor board temperature||Application note|
|High-performance processor die temperature monitoring||Application note|
|Temperature sensors: PCB guidelines for surface mount devices||Application note|
|Optical sense backlight reference design with temperature sensing||Reference design|
|Automotive multiple channel temperature sensing for LED headlight reference design||Reference design|
Featured temperature sensors for system temperature monitoring
Ambient temperature monitoring
Ambient air-temperature monitoring is critical in many applications to control environmental conditions or ensure safe operating conditions. Accurately and quickly measuring ambient temperature can often be a challenge because the sensor may not be completely exposed to the external environment and subject to self-heating effects from other components in the system. Our family of high-accuracy, low-power single and multi-channel temperature sensors in compact packages enables faster thermal response.
Ambient temperature monitoring resources
|Layout considerations for accurately measuring ambient temperature||Application note|
|Smart thermostat localized heat compensation for ambient temperature sensing||Reference design|
Featured temperature sensors for ambient temperature monitoring
Temperature threshold detection
For some applications, continuous temperature collection is unnecessary, but it's critical for the system to stay above or below a temperature threshold. Our family of temperature switches and digital temperature sensors enable simple autonomous temperature monitoring to detect with hysteresis when the temperature crosses its limits. Easily design with a selection of devices that allows threshold trip points to be set via an external resistor, pin-programmable, factory-programed or over I2C.
Temperature threshold detection resources
|How to protect control systems from thermal damage||Application note|
|Basic fan controller with over-temperature detection||Reference design|
|60W, 24V high efficiency industrial power supply with precision voltage, current and power limit||Reference design|
|Low-power battery temperature monitoring||Application note|
Featured temperature sensors for temperature threshold detction
Temperature compensation and calibration
Temperature drift must be a factor in correcting temperature shifts in any system. Temperature will affect everything from passive components (resistors and capacitors, etc.) to active components (amplifiers, data converters, references, clocks, etc.). Even optical components are subject to temperature drift, which changes intensity, spectral shifts, or sensitivity and noise. Our highly linear, high-accuracy temperature sensors provide designers the temperature feedback to correct the effects of temperature in precision systems.
Temperature compensation & calibration resources
|Methods to calibrate thermal monitoring systems||Application note|
|Replacing RTDs with digital temperature sensors in high accuracy sensing and compensation systems||Application note|
|Automotive high-temperature sensor (HTS) reference design||Reference design|
|Temperature sensor interface module for programmable logic controllers (PLC)||Reference design|
|RTD replacement for cold junction compensation in a temperature sensor||Reference design|
Featured temperature sensors for temperature compensation and calibration
Body temperature monitoring
Understanding a patient's temperature is a critical first step in any clinical diagnosis and an important concern for athletes. Beyond the need for ultra-high accuracy, industry trends are moving toward compact wearable form factors to provide continuous temperature monitoring. Temperature sensors with up to 0.1°C accuracy not only meet ASTM E1112 requirements for medical thermometers but also are optimized to keep battery-powered wearables compact and comfortable.
Body temperature monitoring resources
|Enabling research in wireless patient monitoring with the University of California||Video|
|Layout considerations for wearable temperature sensing||Application note|
|Bluetooth-enabled high accuracy skin temperature measurement flex PCB patch||Reference design|
Featured temperature sensors for body temperature monitoring
Fluid temperature monitoring
For many metering and industrial processes, it's necessary to either have a direct measure of a fluid's temperature or use the temperature data for compensation purposes to more accurately calculate the volumetric rate of flow. These applications require the sensors not only be small to reduce resistance in the flow, but also low power in cases where the fluid is flammable. We offer low-power analog and digital solutions with accuracy comparable to Class AA RTDs that draw as little as 6.3µW.
Fluid temperature monitoring resources
|RTD replacement in heat meters using digital temperature sensors||Application note|
|Replacing platinum RTD sensors with digital temperature sensors||Reference design|
Featured temperature sensors for fluid temperature monitoring