TIDA-00484

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

TIDA-00484

Design files

Overview

This reference design uses our nano-power system timer, boost converter, SimpleLink™ ultra-low power Sub-1 GHz wireless microcontroller (MCU) platform and humidity sensing technologies to demonstrate an ultra-low power method to duty-cycle sensor end nodes leading to extremely long battery life. This design includes techniques for system design, detailed test results and information to get the design up and running quickly.

Features
  • Use of nano-power system timer to duty cycle the system results in 10+ year battery life from CR2032 coin cell
  • Configurable system wake-up interval
  • Extremely low off-state current (270 nA for 59.97 seconds)
  • Ultra-low on-state current due to low active processor and radio transmit currents (3.376 mA for 30 ms)
  • ±2% relative humidity accuracy
  • ±0.2°C temperature accuracy

Design files & products

Design files

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

TIDU995E.PDF (2787 K)

Reference design overview and verified performance test data

TIDREY5C.PDF (292 K)

Detailed schematic diagram for design layout and components

TIDREY6C.PDF (57 K)

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

TIDREY7C.PDF (135 K)

Detailed overview of design layout for component placement

TIDREY9C.ZIP (768 K)

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

TIDCAC5C.ZIP (465 K)

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

TIDREY8C.PDF (869 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Boost converters (integrated switch)

TPS61291Low Iq Boost Converter with 15nA Bypass Operation

Data sheet document-pdfAcrobat PDF open-in-new HTML
Humidity sensors

HDC1000Low Power, 3% Accuracy Digital Humidity Sensor with Integrated Temperature Sensor

Data sheet document-pdfAcrobat PDF open-in-new HTML
Humidity sensors

HDC1008Low Power, 4% Accuracy Digital Humidity Sensor with Integrated Temperature Sensor

Data sheet document-pdfAcrobat PDF open-in-new HTML
Humidity sensors

HDC1010±2% low-power digital humidity and temperature sensor in WCSP

Data sheet document-pdfAcrobat PDF open-in-new HTML
Humidity sensors

HDC1050±3% low-power, digital humidity sensor with temperature sensor

Data sheet document-pdfAcrobat PDF open-in-new HTML
Load switches

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

Data sheet document-pdfAcrobat PDF open-in-new HTML
Real-time clocks (RTCs) & timers

TPL5100Nano power programmable timer with power gating functionality

Data sheet document-pdfAcrobat PDF open-in-new HTML
Real-time clocks (RTCs) & timers

TPL5110Ultra low power timer with MOS driver and MOSFET power ON

Data sheet document-pdfAcrobat PDF open-in-new HTML
Real-time clocks (RTCs) & timers

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

Data sheet document-pdfAcrobat PDF open-in-new HTML
Sub-1 GHz products

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

Data sheet document-pdfAcrobat PDF open-in-new HTML

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Software

Support software

TID BA Sub-1GHz Sniffer Display Software – TIDCBD9.ZIP (4875 K)

Firmware

TIDA-00484 Firmware (Rev. A) – TIDCAC6A.ZIP (4045 K)

Technical documentation

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Type Title Date
* Design guide Humidity and Temperature Sensor Node for Sub-1GHz Star Networks Design Guide (Rev. E) Sep. 20, 2018
Technical article Collecting environmental data with less energy and wiring May 23, 2017
Technical article Why use Sub-1 GHz in your IoT application Jul. 27, 2016
More literature TIDA-00484 Firmware (Rev. A) Apr. 05, 2016
Technical article Trends in building automation: connected sensors for energy efficiency Feb. 17, 2016
Technical article How to use boost converters in wireless sensor nodes Oct. 06, 2015

Related design resources

Reference designs

REFERENCE DESIGN
TIDA-00374 Humidity & Temp Sensor Node for Star Networks Enabling 10+ Year Coin Cell Battery Life Ref Design

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