TIDA-00752 Reference Design

Texas Instruments

±0.5°C 2-Wire Galvanically Isolated IC Temp Sensor with Pulse Count Interface Reference Design

Description

In order to provide system designers a new cost-effective and easy alternative to assured precision temperature measurement: this reference design discusses the new tiny 2-pin digital output IC temperature sensor with single wire pulse count interface that enhances reliability and greatly simplifies the design of galvanic isolation architecture for sending both power and unidirectional data through same low profile transformer and remote operation. In addition: with fewer error sources: computation of error budget is easier. Cost budgets: accuracy: size and simplicity of interfacing with other circuit elements are main factors in selecting a sensor to do a job and this reference design system tremendously helps in meeting all these requirements. With less-than 0.25 °C maximum measured error over temperature range -50 °C to 150 °C: functional isolation of 400VRMS and IEC61000-4-4 pre-compliance testing: this design significantly reduces the design time for development of high-accuracy temperature measurement systems.

Features
  • Allows Single Low-Profile Transformer for Power and Data Isolation While Eliminating the Need for Optocoupler or Digital Isolator on Data LinePower and Data Coexist on 2–Wire Interface for Remote Temperature Sensing Across IsolationNo Need of System Level Calibration Unlike ThermistorsReplacement for RTDs and NTC or PTC ThermistorsEliminates High-Precision Active or Passive ComponentsFunctional Isolation of 400 VRMS and Dielectric up to 2500-V AC for 60 secondsPre-Compliance Testing: Meets IEC61000-4-4 EFT (Level 4): ±2 kV – Class-AAccuracy Over Temperature: Measured Error Using LUT: Measured Error Using 1st Order Transfer Function: Guaranteed Limits from LMT01 Datasheet Using LUT:
Applications
  • Desktop PC/motherboard
  • Cordless vacuum cleaner
  • Temperature transmitter
  • Dishwasher
  • Cordless power tool
  • Coffee machine
  • Mixer
  • blender & food processor
  • Air conditioner outdoor unit
  • Vacuum robot
  • Cooker hood
  • Cordless handheld garden tool
  • Seeker front end
  • Mains powered tools
  • Radar
  • Programmable DC power supply
  • HVAC motor control
  • Lawn mower
  • Robotic lawn mower
  • Air conditioner indoor unit
  • Humanoid
  • Mother & neonatal care monitor
  • Motorized electronic wheel chair
  • Medical chair & table
  • Chromebook & WOA
  • Residential & living fan
  • Residential water heater
  • Standard notebook PC
  • Ultrasound scanner
  • Heat pump
  • Operation tables
Product Categories
  • Sensors

End Equipment Reference Diagrams

Application Area End Equipment
Desktop PC/motherboard https://www.ti.com/solution/desktop-pc-motherboard#referencedesigns
Cordless vacuum cleaner https://www.ti.com/solution/cordless-vacuum-cleaner#referencedesigns
Temperature transmitter https://www.ti.com/solution/temperature-transmitter#referencedesigns
Dishwasher https://www.ti.com/solution/dish-washer#referencedesigns
Cordless power tool https://www.ti.com/solution/cordless-power-tool#referencedesigns
Coffee machine https://www.ti.com/solution/coffee-machine#referencedesigns
Mixer https://www.ti.com/solution/mixer-blender-food-processor#referencedesigns
blender & food processor https://www.ti.com/solution/air-conditioner-outdoor-unit#referencedesigns
Air conditioner outdoor unit https://www.ti.com/solution/vacuum-robot#referencedesigns
Vacuum robot https://www.ti.com/solution/cooker-hood#referencedesigns
Cooker hood https://www.ti.com/solution/cordless-handheld-garden-tool#referencedesigns
Cordless handheld garden tool https://www.ti.com/solution/seeker-front-end#referencedesigns
Seeker front end https://www.ti.com/solution/mains-powered-tools#referencedesigns
Mains powered tools https://www.ti.com/solution/radar#referencedesigns
Radar https://www.ti.com/solution/programmable-dc-power-supply#referencedesigns
Programmable DC power supply https://www.ti.com/solution/hvac-motor-control#referencedesigns
HVAC motor control https://www.ti.com/solution/lawn-mower#referencedesigns
Lawn mower https://www.ti.com/solution/robotic-lawn-mower#referencedesigns
Robotic lawn mower https://www.ti.com/solution/air-conditioner-indoor-unit#referencedesigns
Air conditioner indoor unit https://www.ti.com/solution/humanoid#referencedesigns
Humanoid https://www.ti.com/solution/mother-neonatal-care-monitor#referencedesigns
Mother & neonatal care monitor https://www.ti.com/solution/motorized-electronic-wheel-chair#referencedesigns
Motorized electronic wheel chair https://www.ti.com/solution/medical-chair-table#referencedesigns
Medical chair & table https://www.ti.com/solution/chromebook-woa#referencedesigns
Chromebook & WOA https://www.ti.com/solution/residential-living-fan#referencedesigns
Residential & living fan https://www.ti.com/solution/residential-water-heater#referencedesigns
Residential water heater https://www.ti.com/solution/standard-notebook-pc#referencedesigns
Standard notebook PC https://www.ti.com/solution/ultrasound-scanner#referencedesigns
Ultrasound scanner https://www.ti.com/solution/heat-pump#referencedesigns
Heat pump https://www.ti.com/solution/operation-tables#referencedesigns
Operation tables https://www.ti.com/solution/dental-chairs#referencedesigns

Parts

Part Number Name Companion Part
MSP430F5528 MSP430F5528 Buy Datasheet
TPD2E001 TPD2E001 Buy Datasheet

Software

Bill Of Materials

Download the bill of materials for TIDA-00752 Download

Schematic

Quickly understand overall system functionality.

Download the schematic for TIDA-00752

Test Data

Get results faster with test and simulation data that's been verified.

Download the test file for TIDA-00752

Other Documents

Title Updated Type Size (KB)
TIDA-00752 CAD Files 09 Dec 2015 ZIP 712
TIDA-00752 PCB 09 Dec 2015 PDF 1359
TIDA-00752 Assembly Drawing 09 Dec 2015 PDF 164
TIDA-00752 BOM 09 Dec 2015 PDF 59
TIDA-00752 Schematic and Block Diagram 09 Dec 2015 PDF 535