Si7050/1/3/4/5-A20 2 I C TEMPERATURE SENSORS Features High Accuracy Temperature Accuracy maintained over the Sensors entire operating temperature and voltage range Si7051: 0.1 C (max) Si7053: 0.3 C (max) Low Power Consumption Si7054: 0.4 C (max) 195 nA average current 1 Hz Si7055: 0.5 C (max) sample rate Si7050: 1.0 C (max) 14-bit resolution Wide operating voltage Factory calibrated (1.9 to 3.6 V) 2 I C interface 40 to +125 C operating range 3x3 mm DFN package Ordering Information: Applications See page 19. HVAC/R Asset tracking Thermostats Cold chain storage Pin Assignments White goods Battery protection Computer equipment Industrial controls Top View Portable consumer devices Medical equipment Description SDA 1 6 SCL The Si705x Digital Temperature Sensors offer industry-leading low power consumption and high accuracy across the entire operating voltage and GND 2 5 VDD temperature range. These monolithic CMOS ICs feature a band-gap temperature sensor element, an analog-to-digital converter with up to 14- 2 bit resolution, signal processing, calibration data, and an I C interface. DNC 3 4 DNC 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. Patent Protected. Patents pending 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 2 industry-standard I C 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. Rev. 1.15 9/18 Copyright 2018 by Silicon Laboratories Si7050/1/3/4/5-A20Si7050/1/3/4/5-A20 Functional Block Diagram Vdd Voltage Calibration Si705x Regulator Memory Temp ADC Control Logic Sensor 1.25V SDA 2 I C Interface Ref SCL GND 2 Rev. 1.15