www.sensirion.com

Sensirion, Eggbühlstr. 14, 8052 Zürich, Switzerland, Tel: +41 1 306 40 00, Fax: +41 1 306 40 30

v2.02

SHT1x / SHT7x

Humidity & Temperature Sensor

- Relative humidity and temperature sensors

- Dew point

- Fully calibrated, digital output

- Excellent long-term stability

- No external components required

- Ultra low power consumption

- Surface mountable or 4-pin fully interchangeable

- Small size

- Automatic power down

SHT1x / SHT7x Product Summary

The SHTxx is a single chip relative humidity and

temperature multi sensor module comprising a calibrated

digital output. Application of industrial CMOS processes with

patented micro-machining (CMOSens® technology) ensures

highest reliability and excellent long term stability. The

device includes a capacitive polymer sensing element for

relative humidity and a bandgap temperature sensor. Both

are seamlessly coupled to a 14bit analog to digital converter

and a serial interface circuit on the same chip. This results in

superior signal quality, a fast response time and insensitivity

to external disturbances (EMC) at a very competitive price.

Each SHTxx is individually calibrated in a precision humidity

chamber with a chilled mirror hygrometer as reference. The

calibration coefficients are programmed into the OTP

memory. These coefficients are used internally during

measurements to calibrate the signals from the sensors.

The 2-wire serial interface and internal voltage regulation

allows easy and fast system integration. Its tiny size and low

power consumption makes it the ultimate choice for even

the most demanding applications.

The device is supplied in either a surface-mountable LCC

(Leadless Chip Carrier) or as a pluggable 4-pin single-in-line

type package. Customer specific packaging options may be

available on request.

1

Applications

_ HVAC

_ Automotive

_ Consumer Goods

_ Weather Stations

_ Humidifiers

_ Dehumidifiers

VDD

GND

SCK

DATA

Calibration

Memory

%RH

Sensor

Temp.

Sensor

Digital 2-

wire

Interface

&

CRC

generator

A

D

Block Diagram

Ordering Information

Part

Number

Humidity

accuracy

[%RH]

Temperature

accuracy [K]

@ 25 °C

Package

SHT11

±3.0

±0.4

SMD (LCC)

SHT15

±2.0

±0.3

SMD (LCC)

SHT71

±3.0

±0.4

4-pin single-in-line

SHT75

±1.8

±0.3

4-pin single-in-line

_ Test & Measurement

_ Data Logging

_ Automation

_ White Goods

_ Medical

Evaluation Kit

Available

SHT7x

SHT1x