Humidity & Temperature Sensor Node Reference Design Enabling Sub-1 GHz and Sensor-to-Cloud Networks


Design files


This reference design demonstrates how to create an industrial sensor-to-cloud end node capable of connecting to an IoT network gateway and a cloud data provider. This sensor node reference design uses Texas Instruments' nano-power system timer for power gating, low Iq boost converter, SimpleLink™ultra-low-power Sub-1 GHz wireless microcontroller (MCU) platform and humidity sensing technologies to demonstrate an ultra-lowpower method to duty-cycle sensor end-nodes, leading to longer battery life.

  • Large network-to-cloud connectivity enabling long range, up to 1 km (line of sight)
  • IEEE 802.15.4e/g standards-based sub-1 GHz solution with TI 15.4-stack
  • Configurable system wakeup interval
  • Low standby current of 1 µA
  • ±2% relative humidity accuracy
  • ±0.2°C temperature accuracy
??image.gallery.download_en_US?? View video with transcript Video

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUDG5.PDF (6325 K)

Reference design overview and verified performance test data

TIDRU91A.PDF (313 K)

Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRU93A.PDF (136 K)

Detailed overview of design layout for component placement

TIDRU95A.ZIP (764 K)

Files used for 3D models or 2D drawings of IC components

TIDCE66A.ZIP (481 K)

Design file that contains information on physical board layer of design PCB

TIDRU94A.PDF (876 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Boost converters (integrated switch)

TPS61291Low Iq Boost Converter with 15nA Bypass Operation

Data sheet: PDF | HTML
ESD & surge protection ICs

TPD1E10B0612-pF, ±5.5V, ±30-kV ESD protection diode in 0402 and SOD-523 package

Data sheet: PDF | HTML
Humidity sensors

HDC20102% RH ultra-small, low-power digital relative humidity sensor

Data sheet: PDF | HTML
Load switches

TPS228600.73-Ω, 5-V, ultra-low leakage load switch

Data sheet: PDF | HTML
Real-time clocks (RTCs) & timers

TPL5111Ultra low power system timer (35 nA) for power gating in duty cycled applications

Data sheet: PDF | HTML
Sub-1 GHz products

CC1310SimpleLink™ 32-bit Arm Cortex-M3 Sub-1 GHz wireless MCU with 128kB Flash

Data sheet: PDF | HTML

Technical documentation

= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Design guide Humidity and Temp Sensor Node Ref Design Enabling Sub 1-GHz and Sensor-to-Cloud Dec. 07, 2017

Related design resources

Reference designs

TIDA-00484 Humidity & Temp Sensor Node for Sub-1GHz Star Networks Enabling 10+ Year Coin Cell Battery Life

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​