2-Terminal, High-Precision,Current Output Temperature Sensor Integrated Circuit IC

The SGM446 is a 2-terminal temperature sensor withan output current proportional to absolute temperature.It can be considered as a constant-current andhigh-impedance regulator passing 1μA/K in the supplyvoltage range from 4V to 35V. The SGM446 iscalibrated to 298.2μA output current at 298.2K (+25℃).Compared with the traditional electrical temperaturesensor, the SGM446 does not need resistancemeasurement circuit, linearization circuit, precisionvoltage amplifier and cold junction compensation. Italso integrates the compensation of temperature, flowrate measurement, discrete-component correlation,biasing proportional to absolute temperature, leveldetection of fluids and anemometry.The high-impedance current output of the SGM446makes the device insensitive to voltage dropsespecially on long lines. Therefore, it is particularlysuitable for remote sensing applications. The multiplexof the SGM446 is achieved by switching the currentthrough a CMOS multiplexer or switching the supplyvoltage through the logic gate.The SGM446 is available in Green UTDFN-2×2-2L andUTDFN-2×2-4L packages. It is specified over a widetemperature range of -55℃ to +150℃.

Integrated circuits (ICs) serve as the foundation of modern electronics, offering small size, low power consumption, strong performance and high reliability. They are widely used in consumer electronics, industrial applications, communications, automotive electronics, medical equipment, and aerospace/defense systems.

Uchi Electronics provides high-performance analog and mixed-signal processing solutions for industrial automation, new energy, automotive, communications, computing, consumer electronics and medical equipment applications.

 This solution demonstrates the integrated circuit application of temperature transmitters . For assistance selecting the right product, please contact our technical support team.