The LM50 and LM50QIM3X/NOPB devices are precision integrated-circuit temperature sensors that can sense a –40°C to 125°C temperature range using a single positive supply. The output voltage of the device is linearly proportional to temperature (10 mV/°C) and has a DC offset of 500 mV. The offset allows reading negative temperatures without the need for a negative supply.
The ideal output voltage of the LM50 or LM50QIM3X/NOPB ranges from 100 mV to 1.75 V for a –40°C to 125°C temperature range. The LM50 and LM50QIM3X/NOPB do not require any external calibration or trimming to provide accuracies of ±3°C at room temperature and ±4°C over the full –40°C to 125°C temperature range. Trimming and calibration of the LM50 and LM50QIM3X/NOPB at the wafer level assure low cost and high accuracy. The linear output, 500 mV offset, and factory calibration of the LM50 and LM50QIM3X/NOPB simplify the circuitry requirements in a single supply environment where reading negative temperatures is necessary. Because the quiescent current of the LM50 and LM50QIM3X/NOPB is less than 130 μA, self-heating is limited to a very low 0.2°C in still air.
Feature
- LM50-Q1 is AEC-Q100 Grade 1 Qualified and is Manufactured on an Automotive Grade Flow
- Calibrated Directly in Degrees Celsius (Centigrade)
- Linear + 10 mV/°C Scale Factor
- ±2°C Accuracy Specified at 25°C
- Specified for Full –40° to 125°C range
- Suitable for Remote Applications
- Low Cost Due to Wafer-Level Trimming
- Operates from 4.5 V to 10 V
- Less than 130-μA Current Drain
- Low Self-Heating: Less than 0.2°C in Still A
- Nonlinearity Less than 0.8°C Over Temp
- UL Recognized Component
