Si7013-A20 2 I C HUMIDITY AND TWO-ZONE TEMPERATURE SENSOR Features Precision Relative Humidity Sensor Factory-calibrated 2 3% RH (max), 080% RH I C Interface 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 range Package: 3x3 mm DFN Low Voltage Operation (1.9 to 3.6 V) Excellent long term stability Low Power Consumption Optional factory-installed cover Ordering Information: 150 A active current Low-profile See page 38. 60 nA standby current Protection during reflow Excludes liquids and particulates Pin Assignments Applications HVAC/R Micro-environments/data centers Thermostats/humidistats Industrial Controls Top View Instrumentation Indoor weather stations White goods Description 2 The Si7013 I C Humidity and 2-Zone Temperature Sensor is a monolithic CMOS IC integrating humidity and temperature sensor elements, an analog-to-digital 2 converter, signal processing, calibration data, and an I C 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. Patent Protected. Patents pending 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 2 coefficients. The least-significant bit of the Si7013 s I C 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. Rev. 1.4 4/20 Copyright 2016 by Silicon Laboratories Si7013-A20 Not Recommended for New DesignsSi7013-A20 Functional Block Diagram 2 Rev. 1.4 Not Recommended for New Designs