I2C HUMIDITY AND TWO-ZONE TEMPERATURE SENSOR
Precision Relative Humidity Sensor Factory-calibrated
± 3% RH (max), 0–80% RH
High Accuracy Temperature Sensor Integrated on-chip heater
±0.4 °C (max), –10 to 85 °C
Auxiliary Sensor input
0 to 100% RH operating range
Direct readout of remote
Up to –40 to +125 °C operating
thermistor temperature in °C
Package: 3x3 mm DFN
Low Voltage Operation (1.9 to 3.6 V) Excellent long term stability
Low Power Consumption
Optional factory-installed cover
150 µA active current
60 nA standby current
Protection during reflow
Excludes liquids and particulates
Indoor weather stations
The Si7013 I2C Humidity and 2-Zone Temperature Sensor is a monolithic CMOS
IC integrating humidity and temperature sensor elements, an analog-to-digital
converter, signal processing, calibration data, and an I2C Interface. The patented
use of industry-standard, low-K polymeric dielectrics for sensing humidity enables
the construction of low-power, monolithic CMOS Sensor ICs with low drift and
hysteresis, and excellent long term stability.
The humidity and temperature 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.
An auxiliary sensor input with power management can be tied directly to an
external thermistor network or other voltage-output sensor. On-board logic
performs calibration/linearization of the external input using user-programmable
coefficients. The least-significant bit of the Si7013's I2C address is programmable,
allowing two devices to share the same bus.
The Si7013 is available in a 3x3 mm DFN package and is reflow solderable. The
optional factory-installed 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 Si7013 offers an accurate, low-power, factory-calibrated digital solution ideal
for measuring humidity, dew-point, and temperature, in applications ranging from
HVAC/R and asset tracking to industrial and consumer platforms.
See page 35.
Patent Protected. Patents pending
Rev. 0.95 11/13
Copyright © 2013 by Silicon Laboratories
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
Free Datasheet http://www.datasheet4u.com/