LM75AD118

The LM75AD118 from NXP Semiconductors is a digital temperature sensor and thermal detector. It utilizes an on-chip band gap temperature sensor and Sigma-delta A-to-D conversion technique to provide accurate temperature readings.

The device features an I2C-bus interface, allowing up to eight devices to be connected on the same bus without address conflicts. It supports a wide operating supply voltage range from 2.8 V to 5.5 V and operates across a temperature range of -55 °C to +125 °C. The 11-bit ADC offers a temperature resolution of 0.125 °C, making it suitable for applications requiring precise thermal drift measurements.

Key specifications include a temperature accuracy of ±2 °C from -25 °C to +100 °C and ±3 °C from -55 °C to +125 °C. The LM75AD118 can be configured for different operation modes, including a normal mode for periodic monitoring and a shutdown mode to minimize power consumption. It also includes an open-drain output (OS) that becomes active when programmed temperature limits are exceeded.

Available in SO8 and TSSOP8 packages, the LM75AD118 is designed for surface mount applications. It can function as a stand-alone thermostat at power-up with pre-defined temperature set points.