Contact Thermometer SoC Solution
High-precision body temperature measurement with integrated ADC, LCD driver, and ultra-low power design for medical and home healthcare applications
Solution Overview
Contact thermometers (digital thermometers) are essential medical devices for accurate body temperature measurement. Our solution integrates high-precision ADC, thermistor/RTD sensor interface, and advanced temperature calculation algorithms, enabling fast and accurate temperature readings. The ultra-low power design and high integration make it ideal for portable, battery-powered thermometers.
Application Areas
- Digital oral/axillary thermometers
- Medical clinical thermometers
- Baby thermometers
- Multi-function health monitors
Application Block Diagram
High Precision
24-bit Σ-Δ ADC with 1μV resolution, ENOB > 20 bits
Ultra-Low Power
Sleep current I_sleep < 1.5μA, extends battery life
High Integration
Built-in LCD driver, VREF, temp sensor - simplifies design
Core Features & Benefits
High-Precision Measurement
16-bit ADC with low noise performance enables ±0.1°C accuracy across 32°C~42°C range, meeting ASTM E1112 and ISO 80601-2-56 standards.
Ultra-Low Power Design
Sleep current <1.0μA, measurement current ~1mA. Supports single LR41/SR41 button cell for 1000+ measurements, ideal for portable thermometers.
High Integration SoC
Built-in thermistor/RTD interface, LCD driver, buzzer driver, and voltage reference reduce external components by 30%.
Fast Measurement
Optimized measurement algorithm achieves 8-10 second reading time for oral measurement, 60 seconds for axillary measurement.
Medical-Grade Reliability
Excellent ESD/EMI performance and waterproof design support (IPX7) for medical device certification and easy cleaning.
Smart Features
Memory recall (last 10 readings), fever alarm, auto power-off, and optional Bluetooth connectivity for smartphone integration.
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Ready to Start Your Design?
Request free samples and get access to complete reference designs, schematics, and technical support
Development Support & Resources
Comprehensive development resources to accelerate your time-to-market
Reference Design
Complete contact thermometer reference design with schematics and PCB
SDK & Drivers
SDK & Drivers Thermistor drivers, temperature calculation, and sample code
Algorithm Library
Temperature calculation, calibration, and prediction algorithms
Development Tools
Programmer/debugger and configuration tools
Technical Documentation
Datasheets, application notes, and thermometer design guidelines
Training & Webinars
Contact thermometer design training and webinars
Need More Technical Support?
Our technical team is ready to provide professional consultation and customized solutions
Frequently Asked Questions
Does the solution meet medical device standards?
Yes, our MCU is designed to support ASTM E1112 and ISO 80601-2-56 standards for clinical thermometers, with ±0.1°C accuracy across 32°C~42°C range.
What is the typical measurement time?
Typical measurement time is 8-10 seconds for oral measurement, 60 seconds for axillary measurement. Our prediction algorithm can reduce measurement time to 5-8 seconds.
What sensor types are supported?
Our solution supports NTC thermistors (10kΩ @ 25°C) and RTD sensors (PT100/PT1000). The integrated ADC and excitation circuit provide flexible sensor interfacing.
How many temperature readings can be stored?
Our high-end MCU (BH66F2662) supports memory recall for the last 10 readings. The mid-range MCU (BH66F2652) supports the last 5 readings.
Is waterproof design supported?
Yes, our MCU supports waterproof design (IPX7) with proper PCB coating and sealing. We provide design guidelines for waterproof thermometer construction.
Can I get free samples for evaluation?
Yes, we offer free samples and reference designs for qualified customers. Please contact our sales team or submit a sample request through our website.
Ready to Start Your Contact Thermometer Design?
ontact our technical team to get free samples, reference designs, and expert consultation