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SI7020-A10 Datasheet Preview

SI7020-A10 Datasheet

I2C HUMIDITY AND TEMPERATURE SENSOR

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Si7020-A10
I2C HUMIDITY AND TEMPERATURE SENSOR
Features
Precision Relative Humidity Sensor Factory-calibrated
 ± 4% RH (max), 0–80% RH
I2C Interface
High Accuracy Temperature Sensor Integrated on-chip heater
±0.4 °C (max), –10 to 85 °C
3x3 mm DFN Package
0 to 100% RH operating range
Excellent long term stability
Up to –40 to +125 °C operating
Optional factory-installed cover
range
Low-profile
Wide operating voltage
(1.9 to 3.6 V)
Low Power Consumption
Protection during reflow
Excludes liquids and particulates
150 µA active current
60 nA standby current
Applications
HVAC/R
Thermostats/humidistats
Respiratory therapy
White goods
Indoor weather stations
Micro-environments/data centers
Automotive climate control and
defogging
Asset and goods tracking
Mobile phones and tablets
Description
The Si7020 I2C Humidity and 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.
The Si7020 is available in a 3x3 mm DFN package and is reflow solderable. It can
be used as a hardware- and software-compatible drop-in upgrade for existing RH/
temperature sensors in 3x3 mm DFN-6 packages, featuring precision sensing
over a wider range and lower power consumption. 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 Si7020 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.
Si7020
Ordering Information:
See page 28.
Pin Assignments
Top View
SDA 1
GND 2
DNC 3
6 SCL
5 VDD
4 DNC
Patent Protected. Patents pending
Rev. 1.0 3/14
Copyright © 2014 by Silicon Laboratories
Si7020-A10
Free Datasheet http://www.nDatasheet.com




Silicon Laboratories

SI7020-A10 Datasheet Preview

SI7020-A10 Datasheet

I2C HUMIDITY AND TEMPERATURE SENSOR

No Preview Available !

Si7020-A10
Functional Block Diagram
Si7020
Humidity
Sensor
Temp
Sensor
Vdd
1.25V
Ref
ADC
Calibration
Memory
Control Logic
I2C Interface
GND
SDA
SCL
2 Rev. 1.0
Free Datasheet http://www.nDatasheet.com


Part Number SI7020-A10
Description I2C HUMIDITY AND TEMPERATURE SENSOR
Maker Silicon Laboratories
Total Page 30 Pages
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