This document introduces the features and characteristics of the TMP441 and TMP442 temperature sensors. These two products are packaged in SOT23-8 and have a maximum error of ±1°C for the remote diode sensor and a maximum error of ±1°C for the local temperature sensor. They also include automatic beta compensation, series resistance elimination, and η factor correction functions. Both products use the SMBus™ serial interface and support multiple interface addresses. They also have diode fault detection functions.
The TMP441 and TMP442 are digital temperature sensors that combine a local die temperature measurement channel with one (TMP441) or two (TMP442) remote junction temperature measurement channels in an 8‑lead SOT23‑8 package. They provide +1°C accuracy over a wide temperature range and include automatic beta compensation, series‑resistance cancellation, and diode‑fault detection.
The devices use a two‑wire SMBus‑compatible serial interface, support multiple I²C‑style addresses, and are RoHS‑compliant. The datasheet includes electrical specifications, pin configurations, typical characteristics, mechanical dimensions, and application guidelines for processor, FPGA, projector, server, telecom, and SAN environments.
| Package | SOT23‑8 (8‑lead) |
|---|---|
| Operating Temperature Range | -55 °C to +127 °C |
| Resolution (Temperature Sensors) | 12 bits |
| Interface | Two‑Wire/SMBus serial interface |
| Beta Compensation | Automatic |
The devices operate from –55 °C up to +127 °C.
Both sensors are supplied in an 8‑lead SOT23‑8 plastic package.
They use a two‑wire SMBus‑compatible serial interface.
Both the local and remote temperature sensors provide 12‑bit resolution.