DS78LS120,datasheet,pdf(1.5V,

The LM94023 is a precision analog output CMOS integratedcircuit
temperature sensor that operates at a supply voltage
as low as 1.5 Volts. Available in the very small four-bump microSMD
0.8mm x 0.8mm) the LM94023 occupies very little
board area. A class-AB output structure gives the LM94023
strong output source and sink current capability for driving
heavy loads, making it well suited to source the input of a
sample-and-hold analog-to-digital converter with its transient
load requirements, This generally means the LM94023 can
be used without external components, like resistors and
buffers, on the output. While operating over the wide temperature
range of −50°C to +150°C, the LM94023 delivers an
output voltage that is inversely porportional to measured temperature.
The LM94023's low supply current makes it ideal for
battery-powered systems as well as general temperature
sensing applications.