LM235D STMicroelectronics

LM135-LM235-LM335 Precision temperature sensors Features Directly calibrated in K 1C initial accuracy TO-92 Operates from 450A to 5mA (Plastic package) Less than 1 dynamic impedance Description The LM135, LM235, LM335 are precision SO-8 temperature sensors which can be easily (Plastic micropackage) calibrated. They operate as a 2-terminal Zener and the breakdown voltage is directly proportional Pin connections to the absolute temperature at 10mV/K. The circuit has a dynamic impedance of less than 1 and operates within a range of current from TO-92 450A to 5mA without alteration of its (Bottom view) characteristics. Calibrated at +25C, the LM135, LM235, and v- ADJ v+ LM335 have a typical error of less than 1C over a 100C temperature range. Unlike other sensors, the LM135, LM235, LM335 have a linear output. SO-8 (Top view) NC V+ NC ADJ 8765 1234 - NC NC V NC February 2008 Rev 3 1/16 www.st.com 16Schematic diagram LM135-LM235-LM335 1 Schematic diagram Figure 1. Schematic diagram 2 Absolute maximum ratings Table 1. Absolute maximum ratings (AMR) LM335- Symbol Parameter LM135 LM235 Unit LM335A Current I R mA Reverse 15 I F Forward 10 Operating free-air temperature (1) range T C oper Continuous -55 to +150 -40 to +125 -40 to +100 Intermittent +150 to +200 +125 to +150 +100 to +125 T Storage temperature range -65 to +150 C stg 1. T 150C j 2/16