Overview
The SHT40-AD1B-R2 is a 4th generation digital humidity and temperature sensor produced by Sensirion AG. This sensor is part of the SHT4x series, known for its high accuracy, ultra-low power consumption, and robust design. It is designed to measure relative humidity and temperature with high precision and reliability, making it suitable for a wide range of applications.
Key Specifications
| Attribute | Value |
|---|---|
| Humidity Range | -20% to +80% RH |
| Sensor Type | Humidity |
| Output Type | Digital |
| Resolution | 16-bit |
| Humidity Accuracy | ±1.8% RH (typical) |
| Temperature Accuracy | ±0.2°C (typical) |
| Supply Voltage | 1.08 V to 3.6 V |
| Operating Temperature Range | -40°C to +125°C |
| Package Style | DFN-4 |
| Mounting Method | Surface Mount |
| Average Current | 0.4 µA (at measurement rate 1 Hz) |
| Idle Current | 80 nA |
| Interface | I2C fast mode plus, CRC checksum |
Key Features
- High accuracy in relative humidity and temperature measurements, with typical accuracies of ±1.8% RH and ±0.2°C, respectively.
- Ultra-low power consumption, with an average current of 0.4 µA at a measurement rate of 1 Hz and an idle current of 80 nA.
- I2C fast mode plus interface with CRC checksum for reliable data transmission.
- Variable power heater for operation in demanding environments.
- Fully functional in condensing environments and NIST traceability.
- JEDEC JESD47 qualification for reliability and robustness.
- Compact DFN-4 package suitable for surface mount technology (SMT) processing.
Applications
- Industrial automation and control systems where precise environmental monitoring is crucial.
- Consumer electronics, such as smart home devices and wearables, requiring accurate humidity and temperature sensing.
- Agricultural and horticultural applications for monitoring soil and air conditions.
- Medical devices and healthcare equipment needing reliable environmental data.
- Automotive systems for cabin climate control and air quality monitoring.
Q & A
- What is the typical humidity accuracy of the SHT40-AD1B-R2 sensor?
The typical humidity accuracy is ±1.8% RH.
- What is the operating temperature range of the SHT40-AD1B-R2 sensor?
The operating temperature range is -40°C to +125°C.
- What is the supply voltage range for the SHT40-AD1B-R2 sensor?
The supply voltage range is 1.08 V to 3.6 V).
- What interface does the SHT40-AD1B-R2 sensor use for data transmission?
The sensor uses the I2C fast mode plus interface with CRC checksum).
- Is the SHT40-AD1B-R2 sensor suitable for surface mount technology (SMT) processing?
Yes, it is suitable for SMT processing with a DFN-4 package).
- What is the average current consumption of the SHT40-AD1B-R2 sensor at a measurement rate of 1 Hz?
The average current consumption is 0.4 µA at a measurement rate of 1 Hz).
- Can the SHT40-AD1B-R2 sensor operate in condensing environments?
Yes, it is fully functional in condensing environments).
- Does the SHT40-AD1B-R2 sensor have any special features for operation in demanding environments?
Yes, it features a variable power heater for operation in demanding environments).
- Is the SHT40-AD1B-R2 sensor qualified according to any industry standards?
Yes, it is qualified according to JEDEC JESD47 standards).
- What is the typical response time of the SHT40-AD1B-R2 sensor for humidity measurements?
The typical response time (τ63%) for humidity measurements is 4 seconds).
