The LM19 is a precision analog output CMOS integrated-circuittemperature 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 LM19 is predominatelylinear, yet has a slight predictable parabolic curvature.The accuracy of the LM19 when specified to a parabolictransfer function is ±2.5°C at an ambient temperature of +30°C. The temperature error increases linearly and reaches amaximum of ±3.8°C at the temperature range extremes. Thetemperature range is affected by the power supply voltage. Ata power supply voltage of 2.7 V to 5.5 V the temperaturerange extremes are +130°C and −55°C. Decreasing the powersupply voltage to 2.4 V changes the negative extreme to−30°C, while the positive remains at +130°C.