The LM83 Digital Temperature Sensor is a two-wire serial interface product that uses a Delta-Sigma analog-to-digital converter with a digital over-temperature detector to sense the voltage and thus the temperature of three remote diodes.
The LM83 digital temperature sensor measures its own die temperature and up to three external diode junctions via a Delta‑Sigma ADC. It communicates over a two‑wire SMBus/I²C compatible interface and provides programmable high‑temperature limits with INT and T_CRIT_A interrupt outputs.
The device operates from 3.0 V to 3.6 V, offers 8‑bit resolution, and includes features such as local temperature sensing, remote diode monitoring, and register read‑back capability. Typical applications include system thermal management for computers and electronic test equipment.
| Supply Voltage | 3.0 V to 3.6 V |
|---|---|
| Supply Current (max) | 0.8 mA |
| Resolution | 8 bits (1 °C) |
| Package | 16‑lead QSOP |
The LM83 uses a two‑wire SMBus/I²C compatible serial interface.
The default T_CRIT threshold is 127 °C.
The LM83 is supplied in a 16‑lead QSOP package.