AHT10 Temperature and Humidity Sensor Measurement Module

AHT10 High Precision Digital Temperature and Humidity Sensor Measurement Modulewith I²C Communication

AHT10 Sensor Module

INTRODUCTION

AHT10, a new generation of temperature and humidity sensor, has set a new standard in size and intelligence: it is embedded in a double row flat leadless SMD package suitable for reflow soldering, with a bottom surface of 4x5mm and a height of 1.6mm. The sensor outputs calibrated digital signal in standard IC format.

The newly designed ASIC chip in AHT10 incorporates an improved MEMS semiconductor capacitive humidity sensor and includes a standard on-chip temperature sensor.Its performance has greatly improved or even exceeded the reliability level of the previous generation of sensors. The performance of the new generation of temperature and humidity sensors is more stable in harsh environment after improvement.

PARAMETERS

• Product model: AHT10
• Supply voltage: 1.8-3.6V DC
• Measurement range (humidity): 0~99 9%RH
• Measurement range (temperature): -40~+85°C
• Humidity accuracy:±2% RH (25°C)
• Temperature accuracy: ±3°C
• resolving power: Temperature: 0.1°C  humidity: 0.1% RH
• output signal: I2C signal

SIZE

SENSOR PERFORMANCE

Humidity Characteristic Table

Temperature Characteristic Table

INTERFACE DEFINITION

POWER PIN (VDD GND)

AHT10 has a power supply range of 1.8-3.6V and a recommended voltage of 3.3V. Connect a 100nF decoupling capacitor between the power supply (VDD) and the ground (GND), positioning the capacitor as close as possible to the sensor.

SERIAL CLOCK (SCL)

The microprocessor and AHT10 use SCL for communication synchronization. As the interface contains completely static logic, there is no minimum SCL frequency requirement.

SERIAL DATA (SDA)

SDA pins are used for data input and output of the sensor. The SDA is effective on the rising edge of the serial clock (SCL) when sending commands to the sensor, and the SDA must remain stable when the SCL is at high levels. After the falling edge of SCL, you can change the value of SDA. To ensure communication security, extend the effective time of SDA to TSU and THO before the rising edge of SCL and after the falling edge of SCL.When reading data from the sensor, the SDA is effective after the SCL is low (TV) and remains until the falling edge of the next SCL.

TRACKING INFORMATION

APPLICATION SCENARIOS

It is mainly used in HVAC, dehumidifier, test and detection equipment, consumer goods,automobile, automatic control, data recorder, weather station, household appliances,humidity regulation, medical and other related temperature and humidity detection and control.