SI7005-B-FM 데이터 시트보기 (PDF) - Silicon Laboratories
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SI7005-B-FM Datasheet PDF : 40 Pages
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Si7005
DIGITAL I2C HUMIDITY AND TEMPERATURE SENSOR
Features
Relative Humidity Sensor
I2C host interface
± 4.5% RH (maximum @ 0–80% RH) Integrated on-chip heater
Temperature Sensor
4x4 mm QFN package
±0.5 ºC accuracy (typical)
±1 ºC accuracy (maximum
@
0
to
70
°C)
0 to 100% RH operating range
Excellent long term stability
Factory calibrated
–40 to +85 °C (GM) or 0 to +70 °C
operating range (FM)
Optional factory-installed
cover
Wide operating voltage range
(2.1 to 3.6 V)
Low Power Consumption
Low-profile
Protection during reflow
Excludes liquids and
particulates
240 µA during RH conversion
(hydrophobic/oleophobic)
Applications
Industrial HVAC/R
Thermostats/humidistats
Respiratory therapy
White goods
Micro-environments/data centers
Automotive climate control and
de-fogging
Asset and goods tracking
Description
The Si7005 is a digital relative humidity and temperature sensor. This
monolithic CMOS IC integrates temperature and humidity sensor
elements, an analog-to-digital converter, signal processing, calibration
data, and an I2C host interface. The patented use of industry-standard,
low-K polymeric dielectrics for sensing humidity enables the construction
of a low-power, monolithic CMOS sensor IC with low drift and hysteresis
and excellent long term stability.
Both the temperature and humidity sensors are factory-calibrated and the
calibration data is stored in the on-chip non-volatile memory. This ensures
that the sensors are fully interchangeable, with no recalibration or
software changes required.
The Si7005 is packaged in a 4x4 mm QFN package and is reflow
solderable. The optional factory-installed protective cover offers a low-
profile, convenient means of protecting the sensor during assembly (e.g.,
reflow soldering) and throughout the life of the product, excluding liquids
(hydrophobic/oleophobic) and particulates.
The Si7005 offers an accurate, low-power, factory-calibrated digital
solution ideal for measuring temperature, humidity, and dew-point in
applications ranging from HVAC/R and asset tracking to industrial and
consumer platforms.
Ordering Information
See Ordering Guide.
Patent protected; patents pending
Pin Assignments
GND 1
DNC 2
SCL 3
SDA 4
DNC 5
DNC 6
18 DNC
17 DNC
16 DNC
15 CS
14 DNC
13 DNC
Rev. 1.3 6/14
Copyright © 2014 by Silicon Laboratories
Si7005
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