Si7007-A20 HUMIDITY/TEMPERATURE SENSOR WITH PWM OUTPUT Features Precision Relative Humidity Sensor Factory-calibrated 5% RH (max), 090% RH PWM Output High Accuracy Temperature Sensor 3x3 mm DFN Package 1 C (max), 10 to 85 C Excellent long term stability 0 to 100% RH operating range Optional factory-installed cover 40 to +125 C operating range Low-profile Wide operating voltage Protection during reflow (1.9 to 3.6 V) Excludes liquids and particulates Low Power Consumption Applications Ordering Information: HVAC/R Micro-environments/data centers See page 18. Thermostats/humidistats Automotive climate control and defogging Respiratory therapy Asset and goods tracking White goods Pin Assignments Mobile phones and tablets Indoor weather stations Description Top View The Si7007 Humidity and Temperature Sensor is a monolithic CMOS IC integrating humidity and temperature sensor elements, an analog-to-digital PWM1 1 6 SELECT converter, signal processing, calibration data, and a PWM output. The PWM output may be filtered to produce an analog voltage output. The patented use of GND 2 5 VDD 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. 3 4 DNC PWM2 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. Patent Protected. Patents pending The Si7007 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 Si7007 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 8/16 Copyright 2016 by Silicon Laboratories Si7007-A20 Not Recommended for New DesignSi7007-A20 Functional Block Diagram V DD Si7007 1.25V Calibration Ref Memory Humidity Sensor Control Logic ADC SELECT Temp Sensor PWM1 PWM Interface PWM2 GND 2 Rev. 1.4 Not Recommended for New Design