Si7057/8/9-A10 2 DIGITAL I C TEMPERATURE SENSOR Features High Accuracy Temperature Low Power Consumption Sensor 50 nA, standby current Si7057: 0.35 C (max), 0 to 70 C Factory-calibrated Si7058: 0.5 C (max), 0 to 70 C 2 I C Interface Si7059: 1.0 C (max), 0 to 70 C 2 Pin-selectable I C addresses 40 to +125 C operating range 2x2 mm QFN package Low Voltage Operation (1.8 V) Excellent long term stability 14-bit resolution Applications Ordering Information: Mobile smartphones and tablets Asset and goods tracking See page 17. Consumer electronics Thermostats HVAC/R Micro-environments/data centers White goods Indoor weather stations Pin Assignments Description 2 DNC The Si7057/8/9 I C Temperature Sensors are monolithic CMOS ICs that integrate temperature sensor elements, an analog-to-digital converter, 2 signal processing, calibration data, and an I C interface. 6 1 5 VDD GND 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 calibration or software changes required. 2 4 SCL SDA 3 The Si7057/8/9 devices are available in a 2x2 mm DFN package and are reflow solderable. The Si7057/8/9 sensors offer an accurate, low-power, factory-calibrated digital solution ideal for measuring temperature in ADD applications ranging from HVAC/R and asset tracking to industrial and consumer platforms. Top View Patent Protected. Patents pending Rev. 1.1 4/17 Copyright 2017 by Silicon Laboratories Si7057/8/9-A10 Not Recommended for New DesignsSi7057/8/9-A10 Functional Block Diagram Vdd Si705x 1.25V Calibration Ref Memory Temp Control Logic Sensor ADC SDA 2 I C Interface SCL GND ADD 2 Rev. 1.1 Not Recommended for New Designs