Overview
ATH41 is a new generation of single-chip integrated temperature and humidity sensor developed by Winsen Technology. It is developed based on Winsen Technology’s extremely weak signal detection design platform and MEMS process design platform. High-sensitivity MEMS humidity-sensitive elements are integrated on silicon-based CMOS wafers, which can reduce the interference of multi-chip signal transmission, reduce chip area, and improve packaging reliability. It has two IIC addresses for users to choose from, and the IIC communication speed is up to 1MHz. It uses a miniaturized DFN package with 8pin feet, with an outer size of 2.5 mm*2.5 mm and a height of 0.9 mm. This allows ATH41 to be integrated in various applications. In addition, the wide supply voltage range of 2.2V-5.5V allows it to adapt to various power supply environments.
Key Features
- Full temperature and humidity range calibration and temperature compensated digital output
- Wide supply voltage range, from 2.2 V to 5.5 V
- IIC interface, communication speed up to 1MHz
- Two user-selectable addresses
- ATH41 typical accuracy is ±3%RH and ±0.5°C
- Single chip integrated temperature and humidity sensor
- High reliability and long-term stability
- Measure relative humidity in the range of 0-100%RH
- Measure temperature in the range of -45-130°C
- Integrated 16-bit high-precision ADC
- Measurement time as low as 2.5ms
Applications
- Home appliance fields: home appliance, humidity control, HVAC, dehumidifiers, smart thermostats, and room monitors etc;
- Industrial fields: automobiles, testing equipment, and automatic control devices;
- Other fields: data loggers, weather stations, medical and other related temperature and humidity detection devices.
Technical Specifications
| Parameter | Condition | Min | Typical | Max | Unit |
| Resolution | Typical | 0.01 | %RH | ||
| Accuracy error1 | Typical | ±3.0 | %RH | ||
| Max | See figure1 | %RH | |||
| Repeatability | ±0.1 | %RH | |||
| Hysteresis | ±1.0 | %RH | |||
| Non-linear | <0.1 | %RH | |||
| Response time2 | t63% | 8 | s | ||
| Scope of work | extended3 | 0 | 100 | %RH | |
| Prolonged Drift4 | Normal | <0.25 | %RH/yr |
