- Published on 2015-08-26 17:08
- Written by Super User
Linear Technology has introduced the low pressure system, high accuracy temperature sensor and dual-channel supply monitor LTC2995. LTC2995 measure the remote diode temperature accuracy of ± 1 ° C, and its own chip temperature measurement accuracy of ± 2 ° C, while suppressing the error caused by noise and series resistance. The device is ± 1.5% accuracy of monitoring two rails (one between 2.25V to 5.5V power supply to the device), which minimizes the system power margin. The LTC2995 provides a voltage proportional to absolute temperature (VPTAT) output as well as a separate temperature is too low, too high temperature, undervoltage and overvoltage alarm output (user-adjustable threshold definition). Configure the device without code. LTC2995 in a space-saving micro-power solution, both the temperature monitor and voltage monitor function.
The LTC2995's accuracy can be configured and no code to run to meet the needs of a variety of applications, including system heat control, energy collection, desktop and notebook computers, network servers, and environmental monitoring. The user can choose to measure the local temperature, remote temperature or alternating between the two measurements, both temperature output pin can be configured for the temperature is too low and / or high temperature alarms in any combination. Temperature conversion is updated once every 3.5 ms to give the system sufficient time to respond to the alert. 1.8V voltage reference output can also be used to share with an external ADC, or used to generate the temperature threshold voltage. When monitoring voltage, the input glitch filter to reduce noise caused by an error reset, and two power-sharing is an overvoltage and undervoltage pin. All threshold resistor divider regulator, all alarm reset output delay time can be only a single capacitor adjustment. Within the entire operating temperature range, the LTC2995 consumes only 220μA supply current.
LTC2995 to provide commercial, industrial and automotive temperature version supported by the operating temperature range 0 ° C to 70 ° C, -40 ° C to 85 ° C and -40 ° C to 125 ° C. LTC2995 RoHS compliant 20-pin 3mm x 3mm QFN package. 1000 approved the purchase price of $ 2.45 per tablet. For more information, Please login www.linear.com.cn/product/LTC2995.
Caption: OV / UV power supply and a single OT / UT remote temperature monitor
Summary of Features: LTC2995
· Monitor the temperature and the two voltage
· Voltage output proportional to the temperature
For temperature and voltage adjustable threshold
± 1 ° C Remote Temperature Accuracy
Within ± 2 ° C temperature accuracy
± 1.5% voltage threshold accuracy
· 3.5 ms VPTAT Updated
· 2.25V to 5.5V supply voltage
· Adjustable reset timeout
· 1.8V reference voltage output
Open-drain alarm output
· 20-pin 3mm x 3mm QFN package
