LM45 Texas instruments

LM45

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LM45

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Описание

The LM45 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Celsius (Centigrade) temperature. The LM45 does not require any external calibration or trimming to provide accuracies of ±2°C at room temperature and ±3°C over a full −20 to +100°C temperature range. Low cost is assured by trimming and calibration at the wafer level. The LM45's low output impedance, linear output, and precise inherent calibration make interfacing to readout or control circuitry especially easy. It can be used with a single power supply, or with plus and minus supplies. As it draws only 120 μA from its supply, it has very low self-heating, less than 0.2°C in still air. The LM45 is rated to operate over a −20° to +100°C temperature range.

Calibrated Directly in ° Celsius (Centigrade)
Linear + 10.0 mV/°C Scale Factor
±3°C Accuracy Guaranteed
Rated for Full −20° to +100°C Range
Suitable for Remote Applications
Low Cost Due to Wafer-Llevel Trimming
Operates from 4.0V to 10V
Less than 120 μA Current Drain
Low Self-Heating, 0.20°C in Still Air
Nonlinearity Only ±0.8°C Max Over Temp
Low Impedance Output, 20Ω for 1 mA Load

Local sensor accuracy (max)	2
Operating temperature range (°C)	-20 to 100
Supply voltage (min) (V)	4
Supply voltage (max) (V)	10
Supply current (max) (µA)	120
Interface type	Analog output
Sensor gain (mV/°C)	10
Rating	Catalog
Features	UL recognized