LM73/LM73-Q1 Temperature Sensors

Texas Instruments LM73/LM73-Q1 Temperature Sensors are integrated, digital-output temperature sensors featuring an incremental Delta-Sigma ADC with a two-wire interface compatible with the SMBus and I²C interfaces. The host can query the LM73/LM73-Q1 at any time to read the temperature. These devices occupy minimal board area. The LM73 operates over a –40°C to 150°C temperature range and provides ±1°C accuracy from –10°C to 80°C. At the same time, the LM73-Q1 operates over a –40°C to 125°C temperature range and provides ±1.45°C accuracy from –10°C to 80°C. The user can optimize the conversion time and the sensitivity of the LM73/LM73-Q1 by programming it to report the temperature in any of four different resolutions. Defaulting to 11-bit mode (0.25°C/LSB), the LM73/LM73-Q1 measures temperature in a maximum of 14 ms, making it ideal for applications requiring temperature data soon after power-up. In its maximum resolution, 14-bit mode (0.03125°C/LSB), the LM73/LM73-Q1 is optimized to sense minimal temperature changes. The Texas Instruments LM73-Q1 devices are AEC-Q100 qualified for automotive applications.