Sensirion STS3x-DIS Humidity & Temperature Sensors

Sensirion STS3x-DIS Humidity and Temperature Sensors feature increased intelligence, reliability, and improved accuracy specifications. The sensors offer a wide supply voltage range, communication speeds of up to 1MHz, and are available in an 8-pin DFN package. Sensirion's CMOSens^® technology provides the sensors with long-term stability along with high reliability. The STS3x-DIS components also have enhanced signal processing and two distinctive and user-selectable I²C addresses.

Features

Fully calibrated and linearized digital-output
Wide supply voltage range from 2.4V to 5.5V
I²C Interface with communication speeds up to 1MHz and two user-selectable addresses
High reliability and long-term stability
Designed for mass production

Typical accuracy of ±0.3°C
Very fast start-up and measurement time
Tiny 8-Pin DFN package
NIST traceability
High process capability
High signal-to-noise ratio

Applications

Automotive
Medical

Consumer
Industrial

Specifications

Performance
- Accuracy tolerance
  - ±0.2°C typical for the STS30, 0 to +65°C
  - ±0.2°C typical for the STS31, 0 to +90°C
  - ±0.1°C typical for the STS35, +20°C to +60°C
- +0.04°C to +0.15°C repeatability range
- +0.01°C typical resolution
- -40°C to +125°C specified range
- >2s response time
- <+0.03°C/yr maximum long term drift
Electrical
- 2.15V to 5.5V supply voltage range
- 1.8V to 2.15V power-up/-down level range
- 20V/ms slew rate change of the supply voltage
- Supply current
  - 2.0µA to 6.0µA maximum idle state in single-shot mode
  - 45µA typical idle state in periodic data acquisition mode
  - 1500µA maximum measuring, 600µA typical
  - 1.7µA typical average
- 3.6mW to 33mW heater power
Timing
- 1.5ms maximum power-up time, 0.5ms typical
- 1.5ms maximum soft reset time, 0.5ms typical
- 1µs minimum duration of the reset pulse
- Measurement duration
  - 4.5ms maximum at low repeatability, 2.5ms typical
  - 6.5ms maximum at medium repeatability, 4.5ms typical
  - 15.5ms maximum at high repeatability, 12.5ms typical

Absolute maximum ratings
- -0.3V to 6V supply voltage range
- ±100mA input current on any pin
- Temperature ranges
  - -40°C to +125°C operating
  - -40°C to +150°C storage
- ESD
  - 4kV human body model (HBM)
  - 750V charge device model (CDM)
Communication timing
- 0 to 1000kHz SCL clock frequency
- 0.24µs hold-time START condition
- SCL clock
  - 0.26µs HIGH period
  - 0.53µs LOW period
- SDA times
  - 0 to 250ns hold time
  - 100ns minimum set-up time
  - 0.9µs maximum valid time
- 300ns maximum rise/fall SCL/SDA time
- 0.26µs minimum set-up time for repeated START and STOP conditions
- 400pF maximum capacitive load on the bus line
- 0.4V maximum low-level output voltage