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SI7005-B-FMR Datasheet(PDF) 1 Page - Silicon Laboratories |
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SI7005-B-FMR Datasheet(HTML) 1 Page - Silicon Laboratories |
1 / 41 page Rev. 1.2 1/14 Copyright © 2014 by Silicon Laboratories Si7005 Si7005 D IGITAL I 2C H UMIDITY AND TEMPERATURE S ENSOR Features Applications 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. Relative Humidity Sensor ± 4.5 % RH (maximum @ 0–80% RH) Temperature Sensor ±0.5 ºC accuracy (typical) ±1 ºC accuracy (maximum @ 0 to 70 °C) 0 to 100% RH operating range –40 to +85 °C (GM) or 0 to +70 °C operating range (FM) Wide operating voltage range (2.1 to 3.6 V) Low Power Consumption 240 µA during RH conversion I2C host interface Integrated on-chip heater 4x4 mm QFN package Excellent long term stability Factory calibrated Optional factory-installed cover Low-profile Protection during reflow Excludes liquids and particulates (hydrophobic/oleophobic) Industrial HVAC/R Thermostats/humidistats Respiratory therapy White goods Micro-environments/data centers Automotive climate control and de-fogging Asset and goods tracking Patent protected; patents pending Ordering Information See Ordering Guide. Pin Assignments 1 6 5 4 3 2 18 13 14 15 16 17 GND DNC DNC SDA SCL DNC DNC DNC CS DNC DNC DNC |
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