LM20BIM7X/NOPB

The LM20 is a precision analog output CMOS integrated-cir-
cuit temperature sensor that operates over a −55°C to +130°
C temperature range. The power supply operating range is
+2.4 V to +5.5 V. The transfer function of LM20 is predomi-
nately linear, yet has a slight predictable parabolic curvature.
The accuracy of the LM20 when specified to a parabolic
transfer function is ±1.5°C at an ambient temperature of +30°
C. The temperature error increases linearly and reaches a
maximum of ±2.5°C at the temperature range extremes. The
temperature range is affected by the power supply voltage. At
a power supply voltage of 2.7 V to 5.5 V the temperature
range extremes are +130°C and −55°C. Decreasing the pow-
er supply voltage to 2.4 V changes the negative extreme to
−30°C, while the positive remains at +130°C.
The LM20’s quiescent current is less than 10 μA. Therefore,
self-heating is less than 0.02°C in still air. Shutdown capability
for the LM20 is intrinsic because its inherent low power con-
sumption allows it to be powered directly from the output of
many logic gates or does not necessitate shutdown at all.