I2C Pressure Sensor with Humidity and Temperature Measurement MS8607

          I2C Pressure Sensor with Humidity and Temperature Measurement MS8607       

                                                         Model Number: MS8607                                                         

1.General Features

• Integrated pressure, humidity and temperature sensor
• QFN package 5 x 3 x 1 mm3
• Operating range: 10 to 2000 mbar, 0%RH to 100%RH, -40 to 85 °C
• High-resolution module: 0.016 mbar, 0.04%RH, 0.01°C
• Supply voltage: 1.5 to 3.6 V
• Fully factory calibrated sensor • I2C interface

2.DESCRIPTION
The MS8607 is the novel digital combination sensor of MEAS providing 3 environmental physical measurements
all-in-one: pressure, humidity and temperature (PHT). This product is optimal for applications in which key
requirements such as ultra low power consumption, high PHT accuracy and compactness are critical. High
pressure resolution combined with high PHT linearity makes the MS8607 an ideal candidate for environmental monitoring and altimeter in smart phones and tablet PC, as well as PHT applications such as HVAC and weather stations. This new sensor module generation is based on leading MEMS technologies and latest benefits from Measurement Specialties proven experience and know-how in high volume manufacturing of sensor modules, which has been widely used for over a decade.

3.FIELD OF APPLICATION
• Smart phones and Tablet PCs
• HVAC applications
• Weather station
• Printers
• Home Appliance and humidifiers

4.FUNCTIONAL DESCRIPTION
GENERAL
The MS8607 includes two sensors with distinctive MEMS technologies to measure pressure, humidity and temperature. The first sensor is a piezo-resistive sensor providing pressure and temperature. The second sensor is a capacitive type humidity sensor providing relative humidity. Each sensor is interfaced to a ΔΣ ADC
integrated circuit for the digital conversion. The MS8607 converts both analog output voltages to a 24-bit digital value for the pressure and temperature measurements, and a 12-bit digital value for the relative humidity measurement.
SERIAL I2C INTERFACE
The external microcontroller clocks in the data through the input SCL (Serial CLock) and SDA (Serial DAta). Both sensors respond on the same pin SDA which is bidirectional for the I2C bus interface. Two distinct I2C
addresses are used (one for pressure and temperature, the other for relative humidity, see Figure 2).
Module reference Mode Pins used
MS860702BA01 I2C SDA, SCL
Figure 1: Communication Protocol and pins
Sensor type I2C address (binary value) I2C address (hex. value)
Pressure and Temperature P&T 1110110 0x76
Relative Humidity RH 1000000 0x40
Figure 2: I2C addresses