LM235A Datasheet | National Semiconductor

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 m V/˚K. With less than 1Ω dynamic impedance the device operates over a current range of 400 µA to 5 m A 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˚C to +125˚C temperature range. The LM335 operates from - 40˚C to +100˚C. The LM135/LM235/LM335 are available packaged in hermetic TO-46 transistor packages while the LM335 is also available in plastic TO-92 packages. Features n Directly calibrated in ˚Kelvin n 1˚C initial accuracy available n Operates from 400 µA to 5 m A n Less than 1Ω dynamic impedance n Easily calibrated n Wide operating temperature range n 200˚C overrange n Low cost Schematic Diagram DS005698-1 © 1999 National Semiconductor Corporation DS005698 .national. Connection Diagrams TO-92 Plastic Package SO-8 Surface Mount Package TO-46 Metal Can Package- DS005698-8 Bottom View Order Number LM335Z or LM335AZ See NS Package Number Z03A DS005698-25 Order Number LM335M See NS Package Number M08A DS005698-26 - Case is connected to negative pin Bottom View Order Number LM135H, LM135H-MIL, LM235H, LM335H, LM135AH, LM235AH or LM335AH See NS Package Number H03H .national. Absolute Maximum Ratings (Note 4) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Reverse Current...