User's Manual

www.ti.com Hardware Description
7
SWRU509–February 2017
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2.4.4 Gyroscope, Accelerometer, and Compass
The MPU-9250 device is a multichip module consisting of a 3-axis gyroscope, a 3-axis accelerometer, and
a 3-axis magnetometer for position tracking (see [4]). The MPU-9250 features three 16-bit ADCs each for
the gyroscope, accelerometer, and magnetometer. Some other features of the MPU-9250 are as follows:
• High-precision clock
• Precision tracking of fast and slow motions
• VDD operating range of 2.4 V to 3.6 V
• I2C and SPI serial communication interface
2.4.5 Infrared Thermopile Sensor
The TMP007 device is a fully-integrated microelectromechanical system (MEMS) thermopile sensor that
measures the temperature of an object without direct contact (see [5]). The thermopile absorbs passive
infrared energy from an object at wavelengths of 4 µm to 16 µm within the end-user defined field of view.
Some other features are as follows:
• 14-bit local temperature sensor for cold junction reference
• Two-wire serial interface options
• Low power
2.4.6 Pressure Sensor
The BMP280 device is a digital pressure sensor for measuring barometric pressure conditions (see [6]).
The BMP280 can also be used to determine altitude. Some other features of the sensor include the
following:
• Wide pressure range of 300 hPa to 1100 hPa
• High accuracy
• Low current consumption of 2.7 µA @ 1 Hz sampling rate
• I2C and SPI serial communication interface
2.4.7 Humidity Sensor
The HDC1000 device is a digital humidity sensor with a relative humidity (RH) operating range of 0% to
100% that provides excellent measurement accuracy at very low power (see [7]). Some other features
are:
• Relative humidity accuracy ±3%
• 14-bit measurement resolution
• Supply voltage range of 3 V to 5 V
2.4.8 Light Sensor
The OPT3001 device is a sensor that measures the intensity of visible light (see [8]). The device can
sense a light spectrum similar to that of the human eye. Some other features follow:
• Measurements: 0.01 lux to 83k lux
• Wide power-supply range: 1.6 V to 3.6 V
• Low operating current: 1.8 µA
• Flexible interrupt system