SHT20

SHT20

Manufacturer:: SENSIRION

SENSIRION SHT20 Digital Humidity & Temperature Sensor

Specifications

Product Introduction

The SHT20 humidity and temperature sensor is a fully calibrated, digital output sensor with an I2C interface. It is embedded in a reflow solderable Dual Flat No leads (DFN) package with a 3 x 3mm footprint and 1.1mm height. The sensor provides calibrated, linearized sensor signals in digital, I2C format. It contains a capacitive type humidity sensor, a band gap temperature sensor, and specialized analog and digital integrated circuits on a single CMOSens chip. Every sensor is individually calibrated and tested, with a lot identification printed on the sensor and an electronic identification code stored on the chip. The resolution can be changed by command (8/12bit up to 12/14bit for RH/T), and a checksum helps to improve communication reliability.

Features

  • Fully calibrated
  • Digital output, I2C interface
  • Low power consumption
  • Excellent long term stability
  • DFN type package – reflow solderable

Applications

  • Humidity and temperature sensing in various environments
  • Data logging and evaluation with EK-H4 and EK-H5 evaluation kits

Specifications Table

Supply Voltage, VDD 2.1 to 3.6 V
Supply Current, IDD (sleep mode) 0.15 to 0.4 µA
Supply Current, IDD (measuring) 200 to 330 µA
Power Dissipation (sleep mode) 0.5 to 1.2 µW
Power Dissipation (measuring) 0.6 to 1.0 mW
Power Dissipation (average 8bit) 3.2 µW
Heater 5.5mW, ΔT = +0.5-1.5°C
Communication Digital 2-wire interface, I2C protocol
Humidity Resolution (12 bit) 0.04 %RH
Humidity Resolution (8 bit) 0.7 %RH
Humidity Accuracy Tolerance (typ) ±3.0 %RH
Humidity Repeatability ±0.1 %RH
Humidity Hysteresis ±1 %RH
Humidity Nonlinearity <0.1 %RH
Humidity Response Time (τ 63%) 8 s
Humidity Operating Range (extended) 0 to 100 %RH
Humidity Long Term Drift <0.25 %RH/yr
Temperature Resolution (14 bit) 0.01 °C
Temperature Resolution (12 bit) 0.04 °C
Temperature Accuracy Tolerance (typ) ±0.3 °C
Temperature Accuracy Tolerance (max) See Figure 3
Temperature Repeatability ±0.1 °C
Temperature Operating Range (extended) -40 to 125 °C
Temperature Response Time (τ 63%) 5 to 30 s
Temperature Long Term Drift <0.02 °C/yr
Package Type DFN, 3 x 3mm, 1.1mm height

To learn more, please download the PDF.

Datasheet: