1. Si70xx Temperature Sensors Customer Friendly
May 2017 1

2. Si705x Temperature Sensors Value Proposition
Patient
Temperature
Management
Internet of Things
Industrial Control
Internet Infrastructure
Personal Emergency Systems
Automotive
Consumer
High Accuracy(from 0.1 to 1 °C) maintained across -40 to 125 °C range
Ideal for industrial applications
Industry-leading low current consumption: just Hz!
Ideal for battery powered systems
0.1 °C sensor (Si7051) can be used to measure human body temperature
Digital I2C interface and fully factory calibrated
Temperature is the most common environmental measurement and has a wide variety of applications across all customer segments.
Silicon Labs’ Si705x temperature sensor family offers industry-leading low power consumption, along with very high accuracy and precision.
Their high precision, (from 0.1C to 1C), maintained across the full industrial temperature range makes them ideal for use in industrial temp sensing applications.
Their class leading power consumption, at under 200nA at 1Hz sampling rate means they can be used in battery powered systems without impacting battery life
The 0.1C accurate sensor can be used in human body temperature monitoring applications like disposable temp patches and wearables.

3. Si705x Temperature Sensors Overview
Part Number
Temp Accuracy (typ)
Temp Accuracy (max)
VDD (V)
Package
Si7050-A20-IM
±0.5 °C
±1.0 °C
1.9 – 3.6
3x3 mm
Si7051-A20-IM
±0.05˚C
±0.1˚C (36-41˚C),
±0.13˚C (20-70˚C)
±0.25˚C ( ˚C)
Si7053-A20-IM
±0.2 °C
±0.3 °C
Si7054-A20-IM
±0.4 °C
Si7055-A20-IM
Si7057-A10-IM (new!)
±0.35 °C
1.67 – 1.98
2x2 mm
Si7058-A10-IM (new!)
±0.25 °C
Si7059-A10-IM (new!)
2x2 mm
QFN Package
Silicon Labs’ Si705x temperature sensors feature 4 accuracy levels and operate from -40 to +125°C temperature range and 1.9 to 3.6V or Vdd range. The I2C interface connects easily to MCU-based applications while the 14-bit ADC provides high resolution measurements.
Unlike competing digital temperature sensors, the Si705x devices maintain their accuracy level across the entire operating temperature and voltage range. For battery-powered applications, the industry-leading low 0.2μA current consumption is ideal.
The Si7057/8/9 temp sensors allow consumers to use the main MCU power supply for their temp sensor, and reduce the footprint to 2x2mm.
3x3 mm
DFN Package

4. Si7051 High Accuracy Temperature Sensor
Medical and Consumer Medical applications require ±0.1 ˚C
Typical digital temperature sensors have an accuracy of ± 0.5 ˚C
More advanced products (e.g., Si7053) have accuracies ± 0.3 ˚C
Still not good enough for the human body temperature applications
Si7051 meets the requirement of ±0.1˚C max
Fully factory calibrated – saves expensive secondary calibration step
Competitively priced for use in consumer applications
Exceeds ASTM E1112 standards
Standard Specification for Electronic Patient Thermometers
Many medical and consumer devices measuring body temperature require 0.1C accuracy. The majority of temp sensors on the market do not meet this requirement.
Even the parts that do often require the customer to do a secondary calibration in the end system, and are not priced competitively for use in consumer applications.
The Si7051 solves these issues by delivering 0.1C accuracy in a low power, easy to use, fully factory calibrated sensor. It is also competively priced to be attractive to consumer applications. We have seen a lot of interest in this for body temp monitoring applications like disposable temperature patches and thermometers.

5. Si705x Temperature Sensor EVBs
P/N
Description
Si7050-EVB
Evaluation Kit for Si7050
Si7051-EVB
Evaluation Kit for Si7051
Si7053-EVB
Evaluation Kit for Si7053
Si7054-EVB
Evaluation Kit for Si7054
Si7055-EVB
Evaluation Kit for Si7055
Si7057-EVB (new!)
Evaluation Kit for Si7057/8/9
Si705x Evaluation Kit
Evaluation kits available for each Si705x temperature sensor
USB dongle control board
“Postage stamp” board for each sensor
Ribbon cable connects postage stamp boards to USB dongle boards
Evaluation software GUI supports all Si70xx temperature and humidity sensors
AN1026 : Temperature Sensor Designer’s Guide
The Si705x-EVB Evaluation Kits come with everything developers need to demonstrate and evaluate the Si7050/3/4/5. The kits contain a main board that plugs into a PC via a USB socket, and a “postage stamp” board containing the Si7050, Si7053, Si7054 or Si7055. The postage stamp boards attach to the main board with the included flat flex cable.
An evaluation software GUI controls the Si705x-EVB kits and supports all Si70xx relative humidity and temperature sensor evaluation kits.
The AN1026 “Temperature Sensor Designer’s Guide” discusses mechanical and thermal considerations to allow customers to get the maximum possible accuracy from the Si705x temp sensors. This is especially useful for customers looking at the higher accuracy parts, like the Si7051.

6. Thank you