The Xtrinsic MPL3115A2 employs a MEMS pressure sensor with an I2C interface to provide accurate Pressure/Altitude and Temperature data. The sensor outputs are digitized by a high resolution 24-bit ADC. Internal processing removes compensation tasks from the host MCU system. Multiple user-programmable , power saving, interrupt and autonomous data acquisition modes are available, including programmed acquisition cycle timing, and poll-only modes. Typical active supply current is 40 μA per measurement-second for a stable 10 cm output resolution.

• Fully compensated internally
• Programmable events
• Autonomous data acquisition
• Resolution down to 0.1 m
• 32-sample FIFO
• Ability to log data up to 12 days using the FIFO
• 1 second to 9 hour data acquisition rate
• I2C digital output interface

The TMP36GRTZ-REEL7 is a Low Voltage Temperature Sensor that provides a voltage output that is linearly proportional to the Celsius (centigrade) temperature. It do not require any external calibration to provide typical accuracies of ±1°C at +25°C and ±2°C over the -40 to +125°C temperature range. The low output impedance of the TMP36 and its linear output and precise calibration simplify interfacing to temperature control circuitry and ADCs. This sensor is intended for single-supply operation from 2.7 to 5.5V maximum. The supply current runs well below 50µA, providing very low self-heating less than 0.1°C in still air. In addition, a shutdown function is provided to cut the supply current to less than 0.5µA. The TMP36 is specified from -40 to +125°C, provides a 750mV output at 25°C and operates to 125°C from a single 2.7V supply. It has an output scale factor of 10mV/°C and functionally compatible with the LM50.

• Low voltage operation
• Calibrated directly in °C
• 10mV/°C Scale factor
• ±2°C Accuracy over-temperature (typical)
• ±0.5°C Linearity (typical)
• Stable with large capacitive loads
• Less than 50µA quiescent current
• 0.5µA Maximum shutdown current
• Low self-heating