LTC2995HUD#PBF

LTC2995HUD#PBF is a high-accuracy temperature sensor and dual voltage monitor with alert outputs. It converts the temperature of an external diode sensor and/or its own die temperature to an analogue output voltage while rejecting errors due to noise and series resistance. Two supply voltages and the measured temperature are compared against upper and lower limits set with resistive dividers. If a threshold is exceeded, the device communicates an alert by pulling low the correspondent open drain logic output. The LTC2995 gives ±1°C accurate temperature results using commonly available NPN or PNP transistors or temperature diodes built into modern digital devices. Voltages are monitored with 1.5% accuracy. A 1.8V reference output simplifies threshold programming and can be used as an ADC reference input. Applications include network servers, core, I/O voltage monitors, desktop and notebook computers, environmental monitoring.

• Monitors temperature and two voltages
• Voltage output proportional to temperature
• Adjustable thresholds for temperature and voltage
• Remote temperature error, η = 1.004 is ±0.25°C typ (0°C to 85°C)
• Internal temperature accuracy is ±0.5°C typ (TA = 25°C, VCC = 3.3V)
• Undervoltage/overvoltage threshold is 500mV typical
• Temperature update interval is 3.5ms typical
• Supply voltage range from 2.25 to 5.5V
• Input glitch rejection, adjustable reset timeout, open drain alert outputs
• 20-lead plastic QFN package, operating ambient temperature range from -40°C to 125°C

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