Si7015-A10
2
DIGITAL I C HUMIDITY AND TEMPERATURE SENSOR
Features
Precision Relative Humidity Sensor Drop-In Upgrade for Si7005
4.5% RH (max), 080% RH
Factory-calibrated
High-Accuracy Temperature Sensor 2
I C Interface
1 C (max), 10 to 85 C
Integrated on-chip heater
0 to 100% RH operating range
4x4 mm QFN package
0 to +70 C operating range (FM)
Excellent long term stability
40 to +85 C operating range (GM)
Optional factory-installed
Low Voltage Operation (1.9 to 3.6 V)
cover
Low Power Consumption
Low-profile Ordering Information
150 A active current
Protection during reflow
See page 31.
60 nA standby current
Excludes liquids and
particulates
Patent protected; patents pending
Applications
Pin Assignments
HVAC/R Micro-environments/data centers
Thermostats/humidistats Industrial controls
Instrumentation Weather stations
White goods Asset tracking and storage
1 18 DNC
GND
2 17 DNC
DNC
Description
3 16 DNC
SCL
2
4 15 CS
The Si7015 I C Humidity and Temperature Sensor is a monolithic CMOS
SDA
IC integrating humidity and temperature sensor elements, an analog-to- 5 14 DNC
DNC
2
digital converter, signal processing, calibration data, and an I C Interface.
6 13 DNC
DNC
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.
Each unit is 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
Si7015 can be used as a drop-in upgrade for the Si7005 with only minor
software changes because the register sets are the same, and the
4x4 mm QFN package is footprint-compatible with that of the Si7005.
The device is compatible with standard SMT assembly processes, such
as reflow. The optional factory-installed cover offers a low profile and
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 Si7015 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. 1.1 6/14 Copyright 2014 by Silicon Laboratories Si7015-A10
DNC 7 24
DNC
GND 8 23
DNC
VDD 9 22
DNC
DNC 10 21
DNC
GND 11 20
DNC
DNC 12 19
GNDSi7015-A10
Functional Block Diagram
2 Rev. 1.1