Test & Measurement
Linear – High-accuracy temperature monitor provides adjustable alerts (LTC2996)Aug 10 2012 - Test & Measurement [More Test & Measurement Articles]
A new high-accuracy temperature sensor for 2.25V to 5.5V systems, the LTC2996 has been introduced by Linear Technology. The device measures a remote diode’s temperature with ±1C accuracy and its own die temperature with ±2C accuracy while rejecting errors due to noise and series resistance.
The device provides a voltage-proportional-to-absolute-temperature (VPTAT) output, as well as individual under-temperature and over-temperature alert outputs, defined by user-adjustable thresholds. No code is required to configure the device. With a 200µA quiescent current, the LTC2996 simply provides a precise, space-saving, micro-power temperature monitoring solution.
The LTC2996’s accuracy, configurability and code-free operation caters to a wide variety of applications, including system thermal control, energy harvesting, desktop and notebook computers, network servers and environmental monitoring. Users can choose to measure internal or remote temperature and easily adjust the temperature thresholds with resistive dividers. Temperature conversions are updated every 3.5ms to provide systems with sufficient time to react to alerts. The device includes 1.8V voltage reference output to share with an external ADC or for generating temperature threshold voltages.
The LTC2996 is offered in commercial, industrial and automotive versions, supporting operating temperature ranges from 0C to 70C, -40C to 85C and -40C to 125C, respectively. The LTC2996 is available today in a RoHS compliant, 10-pin, 3mm x 3mm DFN package, says the company.More news from Linear