LM135 PDF Datasheet

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Description

This is Precision Temperature Sensors. LM135, LM235, LM335, LM135A, LM235A, LM335A Precision Temperature Sensors May 1999 LM135, LM235, LM335, LM135A, LM235A, LM335A Precision Temperature Sensors General Description The LM135 series are precision, easily-calibrated, integrated circuit temperature sensors. Operating as a 2-terminal zener, the LM135 has a breakdown voltage directly proportional to absolute temperature at +10 mV, ˚K. With less than 1Ω dynamic impedance the device operates over a current range of 400 A to 5 mA with virtually no change in performance. When calibrated at 25˚C the LM135 has typically less than 1˚C error over a 100˚C temperature range. Unlike other sensors the LM135 has a linear output. Applications for the LM135 include almost any type of temperature sensing over a 55˚C to +150˚C temperature range. The low impedance and linear output make interfacing to readout or control circuitry especially easy. The LM135 operates over a 55˚C to +150˚C temperature range while the LM235 operates over a 40˚.