SI7050-A20 Datasheet, PDF (1/26 Pages) Silicon Laboratories – IC TEMPERATURE SENSORS

Si7050/3/4/5-A20
I²C TEMPERATURE SENSORS
Features
 High Accuracy Temperature  Accuracy maintained over the
Sensors
entire operating temperature and
Si7053: ±0.3 °C (max)
voltage range
Si7054: ±0.4 °C (max)
 Low Power Consumption
Si7055: ±0.5 °C (max)
195 nA average current @ 1 Hz
Si7050: ±1.0 °C (max)
sample rate
 Wide operating voltage
 14-bit resolution
(1.9 to 3.6 V)
 Factory calibrated
 –40 to +125 °C operating range _{ I2C interface}
 3x3 mm DFN package
Applications
 HVAC/R
 Thermostats
 White goods
 Computer equipment
 Portable consumer devices
 Asset tracking
 Cold chain storage
 Battery protection
 Industrial controls
 Medical equipment
Ordering Information:
See page 19.
Pin Assignments
Top View
Description
The Si705x Digital Temperature Sensors offer industry-leading low power
consumption and high accuracy across the entire operating voltage and
temperature range. These monolithic CMOS ICs feature a band-gap
temperature sensor element, an analog-to-digital converter with up to 14-
bit resolution, signal processing, calibration data, and an I²C interface.
The patented use of novel signal processing and analog design enables
the sensors to maintain their accuracy over a wide temperature and
voltage range, while consuming very little current.
The 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 Si705x devices are available in a 3x3 mm DFN package, and the
industry-standard I²C interface can operate at up to 400 kHz. Requiring
just 195 nA of average current when sampled once per second, the
Si705x can operate for several years with just a single coin cell battery.
The Si705x devices offer an accurate, low-power, factory-calibrated
digital solution ideal for measuring temperature in applications ranging
from HVAC/R and asset tracking to industrial and consumer platforms.
SDA 1
GND 2
DNC 3
6 SCL
5 VDD
4 DNC
Patent Protected. Patents pending
Rev. 1.0 2/15
Copyright © 2015 by Silicon Laboratories
Si7050/3/4/5-A20