LM335 Datasheet, National Semiconductor

n n n n n n n n Directly calibrated in ˚Kelvin 1˚C initial accuracy available Operates from 400 µA to 5 mA Less than 1Ω dynamic impedance Easily calibrated Wide operating.

for the LM135 include almost any type of temperature sensing over a −55˚C to +150˚C temperature range. The low impedance.