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SHT33-DIS

3th Generation, High-Reliability, Certified

Relative Humidity and Temperature Sensor

Features

• Accuracies ±2.0 %RH, ±0.48 °C

• VDD = 2.15 V…5.5 V

• Low drift, <0.01 °C per year

• Sensor-specific calibration certificate acc. to

ISO 17025 : 2017, 3-point temp. calibration

• JEDEC JESD47 qualification

• Operating range: 0…100 %RH, −40…125°C

• Fully functional in a condensing environment

• True NIST-traceability

• Unique serial number

• I2C FM, CRC checksum, multip. I2C addr.

• Tiny 8-pin DFN package with ALERT pin

General Description

The SHT33-DIS

is part of Sensirion’s new family of low drift digital calibrated and ISO17025 certified

sensors, combining ISO17025 certified temperature and highly accurate humidity sensing in a single

package. It relies on the industry proven CMOSens® technology, enabling increased computational

power, reliability and improved accuracy specifications compared to its predecessors. Its

functionality includes enhanced signal processing, two distinctive and user selectable I2C

addresses and communication speeds of up to 1 MHz. The DFN package has a footprint of

2.5 x 2.5 mm2 with a height of 0.9 mm. Every SHT33 can be identified by its unique serial number

and is supplied with a ISO17025 accredited calibration certificate for the temperature measurement.

The calibration certificate comprises three temperatures,

−30 °C, 5 °C, and 70 °C. In terms of

communication, electrical specifications, and footprint, the SHT33-DIS is fully identical with the

SHT3x-DIS.

Device Overview

Functional Block Diagram

Products

Details

SHT33-DIS

ISO17025 3-point calibration certificate

Full product list on page 24

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nRESET

Alert

SDA SCL

ADDR

Power on

Reset

Alert Logic

RESET

Digital Interface

RH Sensor

T Sensor

Data processing

& Linearization

ADC

ADC

Calibration

Memory

VSS

VDD

VSS

VDD