TMP112

The TMP112 is a high-accuracy digital temperature sensor manufactured by Texas Instruments, designed for precise thermal monitoring in a wide range of applications. It features an integrated analog-to-digital converter (ADC) that provides 16-bit resolution, enabling temperature measurements with an accuracy of ±0.5°C over the operating range of –40°C to +125°C. The device operates from a supply voltage of 1.7V to 3.6V, making it suitable for low-power systems such as portable electronics and battery-operated devices. This sensor communicates via a standard I²C-compatible interface, supporting both 7-bit and 10-bit addressing modes for flexible system integration. Its built-in alert function allows users to configure high and low temperature thresholds, triggering an interrupt when the measured temperature exceeds these limits—ideal for systems requiring real-time thermal event detection without continuous polling. Additionally, the TMP112 supports multiple power-saving modes, including a shutdown mode with current consumption as low as 1.1 µA, which enhances energy efficiency in power-sensitive applications. The sensor includes an internal temperature sensor with on-chip calibration, eliminating the need for external components or software compensation. It also offers programmable conversion rates from 0.25 Hz up to 16 Hz, allowing users to balance measurement speed against power consumption based on their specific application needs. The device is housed in a compact 3mm × 3mm SON package, offering a small footprint ideal for space-constrained designs. Common applications include industrial process control, consumer electronics, medical equipment, and automotive systems where accurate and reliable temperature sensing is critical. Its robust design ensures stable performance across varying environmental conditions, while its low quiescent current makes it well-suited for IoT devices and remote monitoring nodes. With support for both single-shot and continuous conversion modes, the TMP112 provides flexibility in implementation, whether used in a simple temperature readout or part of a complex thermal management system.