Temperature to voltage converter offers 1°C accuracy
1 min read
A new temperature to voltage converter with built in series resistance cancellation for 2.5 to 5.5V systems has been introduced by Linear Technology.
The LTC2997 is a simple temperature monitoring solution, designed to measure a remote diode's temperature or local temperature with ±1°C accuracy or local temperature with ±1.5°C accuracy. It is suitable for system thermal control, energy harvesting, desktop and notebook computers, network servers and environmental monitoring.
According to Linear, two current sense inputs can be configured to measure either local or remote temperature. A built in algorithm cancels the errors due to sensor series resistance when measuring a diode or transistor voltages. A 1.8V voltage reference output is also available to share with an external a/d converter or for generating temperature threshold voltages to compare against the VPTAT output.
The LTC2997 is offered in commercial, industrial and automotive versions, supporting operating temperature ranges from 0 to 70°C, -40 to 85°C and -40 to 125°C, respectively. It is available now in an RoHS compliant, 6pin, 2 x 3mm DFN package.
