Anglia Live

• SHT40
• Accuracies ΔRH = ±1.0 %RH, ΔT = ±0.1 °C
• VDD = 1.08 V to 3.6 V
• Avg. current: 0.4 µA, Idle current: 80 nA
• I2C FM+, CRC checksum, multiple I2C addresses
• Patented protection options [1], PTFE membrane and removable protective cover
• Fully functional in a condensing environment
• Power heater, true NIST-traceability
• JEDEC JESD47 qualification
• Sensor-specific calibration certificate acc. To ISO 17025: 2017, 3-point temp. calibration
• Operating range: 0 to 100 %RH, −40 to +125 °C
• SGP40
• Supply voltage: 1.7 - 3.6 V
• Average supply current: 2600 uA
• Max. supply current: 3000 uA
• I²C Interface with 2 x digital 16-bit raw output signals
• Processed output: 0-500 VOC Index
• Measurement range: 0 – 1000 ppm
• Response time (τ63%): < 10 s
• Device-to-device var.: 15 – 15 % m.v.
• Limit of detection: < 0.05 ppm of ethanol equivalents or < 10 % of concentration setpoint, whichever is larger
• Switch-on time: 1h
• On-chip humidity compensation
• Compact 6 pin DFN package measuring 2.44 x 2.44 x 0.85mm (LxWxH)
• Operating Conditions: -10 to +50°C / 0 to 90 %RH
• LPS22DF
• 260 to 1260 hPa absolute pressure range
• Current consumption down to 1.7 μA
• Absolute pressure accuracy: 0.2 hPa
• Robustness to soldering stress: 0.15 hPa
• Low pressure sensor noise: 0.34 Pa
• High-performance TCO: 0.45 Pa/°C
• Embedded temperature compensation
• 24-bit pressure data output
• ODR from 1 Hz to 200 Hz
• SPI, I²C, or MIPI I3CSM interface
• Supports 1.08 V digital interface
• Embedded FIFO
• Interrupt functions: data-ready, FIFO flags, pressure thresholds
• Supply voltage: 1.7 to 3.6 V
• High shock survivability: 22,000 g
• Small and thin package

• Sensirion SENSEVAL-SCB4XV1 evaluation board Databrief
• Sensirion SHT4x Humidity & Temperature Sensor Datasheet
• Sensirion SGP40 Indoor Air Quality Sensor Datasheet
• STMicroelectronics LPS22DF Barometric Pressure Sensor Datasheet

The evaluation board features the SHT40 Digital humidity and temperature sensor offering ±1.8% / max. ±3.5% RH. In line with Sensirion’s industry-proven humidity and temperature sensors, the SHT40 offers the best price-performance ratio on the market. Tape and reel packaging combined with its suitability for standard SMD assembly processes make the SHT40 ideal for high-volume applications.

The SHT40 builds on a completely new and optimized CMOSens® chip that offers reduced power consumption and improved accuracy specifications. With the extended supply voltage range from 1.08 V to 3.6 V, it’s the perfect fit for mobile and battery-driven applications. The sensor has an exceptionally small size and is packaged in a robust DFN housing which enables integration into challenging designs while meeting the highest reliability demands, as demonstrated by the JEDEC JESD47 qualification. On top of that, the SHT40 is compliant with the relevant healthy building standards RESET® and WELL Building Standard™.

For indoor air quality measurements, the board includes the Sensirion SGP40 digital VOC (volatile organic compounds) sensor designed for easy integration into air treatment devices and air quality monitors. Based on Sensirion’s patented CMOSens® Technology, the SGP40 offers a complete sensor system on a single chip and features a digital I²C interface, a temperature-controlled micro-hotplate and a humidity-compensated indoor air quality signal. In combination with Sensirion’s powerful VOC Algorithm (part of the gas index algorithm software), the sensor signal can be directly used to evaluate indoor air quality, e.g., for triggering the gradual fan control of an air treatment device. Both the SGP40 chip and VOC algorithm feature unrivalled robustness in the final application over their lifetimes. Pushing the multipixel and multi-hotplate approach to the next level of individual control of each sensing element, the SGP40 enables a drastic reduction in power consumption, making it suitable for battery-driven applications as well. On top of that, the SGP40 is also compliant with the relevant healthy building standards RESET® and WELL Building Standard™

The LPS22DF from STMicroelectronics is also included on the evaluation board, this ultracompact, piezoresistive, absolute pressure sensor functions as a digital output barometer. The LPS22DF provides lower power consumption, achieving lower pressure noise than its predecessor. The device comprises a sensing element and an IC interface that communicates over an I²C, MIPI I3CSM, or SPI interface from the sensing element to the application and supports a wide Vdd IO range for the digital interfaces as well. The sensing element, which detects absolute pressure, consists of a suspended membrane manufactured using a dedicated process developed by STMicroelectronics. The LPS22DF is available in a LGA package (HLGA) and is guaranteed to operate over a temperature range extending from -40 °C to +85 °C. The LGA package is holed to allow external pressure to reach the sensing element.