Simplified Contactless Thermometer

Renesas’ reference design considers the thermometer’s range of operation, accuracy, power considerations, and display options

Image of Renesas’ Simplified Contactless ThermometerRenesas’ winning combination IR contactless thermometers are needed for medical applications to monitor an individual’s body temperature before entering any public place. Depending on the target market and application, the thermal range to be monitored, as well as the required accuracy, may differ significantly. This is especially the case when comparing thermometers used in a medical environment versus those used in industrial applications.

This reference design considers the thermometer’s range of operation, accuracy, power considerations, and display options. The design is one possible use case for designers.

Features
  • RL78/I1D microcontrollers (MCU)
    • Ultra-low power analog 16-bit MCU
    • Suitable for applications such as detectors and sensors requiring low power and analog integration
    • Enhanced analog functions, such as operational amplifiers, a 12-bit A/D converter, and window comparators
    • Supports very low power operation (124 µA at 1 MHz) and a high-speed 4 µs wake up
  • RL78/I1B MCU
    • High precision low power analog 16-bit MCU
    • Low power MCU with 24-bit ΔΣ A/D converter
    • RTC backup and high-accuracy oscillator
    • Ideal for the electricity meter
  • ISL9205 Li-Ion battery chargers
    • Single-cell Li-Ion/Li-polymer battery charger
    • Operates as a pulse charger, where the charge current is determined by the current limit of the AC adapter during the constant current phase
    • Operates in a linear mode during the constant voltage phase in both adapter cases

RL78/I1D Microcontrollers

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
IC MCU 16BIT 16KB FLASH 24HWQFNR5F1177AGNA#W0IC MCU 16BIT 16KB FLASH 24HWQFN0View Details
IC MCU 16BIT 8KB FLASH 20LSSOPR5F11768GSP#30IC MCU 16BIT 8KB FLASH 20LSSOP80 - ImmediateView Details

RL78/I1B Microcontrollers

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
IC MCU 16BIT 64KB FLASH 80LFQFPR5F10MMEDFB#30IC MCU 16BIT 64KB FLASH 80LFQFP48 - ImmediateView Details
IC MCU 16BIT 64KB FLASH 80LFQFPR5F10MMEDFB#50IC MCU 16BIT 64KB FLASH 80LFQFP0View Details
IC MCU 16BIT 128KB FLASH 80LFQFPR5F10MMGDFB#30IC MCU 16BIT 128KB FLASH 80LFQFP347 - ImmediateView Details
IC MCU 16BIT 128KB FLASH 80LFQFPR5F10MMGDFB#50IC MCU 16BIT 128KB FLASH 80LFQFP0View Details
IC MCU 16BIT 64KB FLASH 100LFQFPR5F10MPEDFB#30IC MCU 16BIT 64KB FLASH 100LFQFP0View Details
IC MCU 16BIT 64KB FLASH 100LFQFPR5F10MPEDFB#50IC MCU 16BIT 64KB FLASH 100LFQFP0View Details
IC MCU 16BIT 128KB FLSH 100LFQFPR5F10MPGDFB#30IC MCU 16BIT 128KB FLSH 100LFQFP0View Details

ISL9205 Li-Ion Battery Chargers

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
IC BATT CHG LI-ION 1CELL 10DFNISL9205BIRZIC BATT CHG LI-ION 1CELL 10DFN1994 - ImmediateView Details
IC BATT CHG LI-ION 1CELL 10DFNISL9205DIRZIC BATT CHG LI-ION 1CELL 10DFN415 - ImmediateView Details
IC BATT CHG LI-ION 1CELL 16QFNISL9205IRZIC BATT CHG LI-ION 1CELL 16QFN2314 - ImmediateView Details
IC BATT CHG LI-ION 1CELL 16QFNISL9205IRZ-TIC BATT CHG LI-ION 1CELL 16QFN2930 - ImmediateView Details
IC BATT CHG LI-ION 1CELL 10DFNISL9205CIRZIC BATT CHG LI-ION 1CELL 10DFN0View Details
IC BATT CHG LI-ION 1CELL 10DFNISL9205AIRZIC BATT CHG LI-ION 1CELL 10DFN0View Details
Published: 2020-09-10