LM135 datasheet in PDF, the National Semiconductor precision temperature sensor that behaves like a Zener diode whose breakdown voltage changes by 10 mV per kelvin.

Datasheet for the LT1009, a 1.37 MB PDF from Linear Technology, now part of Analog Devices.

Datasheet for the LM335 precision temperature sensor, a 210 KB PDF. The device behaves like a two-terminal Zener whose breakdown voltage tracks absolute temperature at…