Single Supply Centigrade Integrated Circuit Temperature Sensors LM50CIM3
electronic ic chip
,ic integrated chip
LM50CIM3 SOT-23 ±2℃ Single-Supply Centigrade Temperature Sensor LM50
Description
The LM50 and LM50-Q1 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 LM50-Q1 ranges from 100 mV to 1.75 V for a –40°C to 125°C temperature range. The LM50 and LM50-Q1 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 LM50-Q1 at the wafer level assure low cost and high accuracy. The linear output, 500 mV offset, and factory calibration of the LM50 and LM50-Q1 simplify the circuitry requirements in a single supply environment where reading negative temperatures is necessary. Because the quiescent current of the LM50 and LM50-Q1 is less than 130 µA, self-heating is limited to a very low 0.2°C in still air.
FEATURES and BENEFITS
• 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
Applications
• Automotive
• Computers
• Disk Drives
• Battery Management
• FAX Machines
• Printers
• Portable Medical Instruments
• HVAC
• Power Supply Modules
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