Overview

The OB1203 is a fully integrated optical sensing module for Pulse Oximetry (PPG - photoplethysmography), multi-channel Color Sensing (CS), Ambient Light Sensing (LS) and Proximity Sensing (PS).

With the appropriate algorithm, it can determine human heart rate, blood oxygen saturation (SpO2), respiration rate and heart rate variability (a measure of stress). The OB1203 integrates all light sources, drivers, and the sensor elements, in a single optically optimized package.

A major application of the device is consumer and mobile devices, enabling biosensing features and display control in a single device. The OB1203 can determine proximity of nearby objects in order to support the deactivation of touch screen displays or the detection of a finger for pulse oximetry measurements, for example. The sensor combines optical sensing features (CS, LS, PS) and bio-sensing functionality (PPG) without the need for a transparent optical opening. The unique implementation of OB1203 enables SpO2 measurements behind IR transmissive ink, making the device virtually invisible, and allowing for aesthetic industrial designs.

  • Biosensor:
    • SpO2 measurement behind IR transmissive, but visibly dark ink
    • Industry’s smallest package: 4.2mm × 2mm × 1.2mm
    • Fully integrated and trimmed module including two LEDs, 250mA max drive current and photodetectors 
    • High SNR and Crosstalk cancelation (analog and digital)
  • Ambient Light / Color Sensor:
    • High illuminance accuracy across various light sources
    • Absolute sensitivity: 0.06 lx to > 150,000 lx
    • Output resolution LS/CS: 13 to 20 bits
    • Four LS/CS gain modes: x1 to x6
    • Highly linear output, 50Hz/60Hz light and fluorescent light flicker immunity
  • Proximity Sensor:
    • Integrated and trimmed LED source, driver (250mA) and photodetector
    • High resolution (12 to 16 bits)
    • Object movement detection (in/out)
    • Ambient light suppression > 100 klx sun light
Cellular Cloud Connected System
Cellular Cloud Connected System
Multi-Sensor Platform for ASi-5
Multi-Sensor Platform for ASi-5
Multi-Sensor Module for Industrial Ethernet
Voice Activated DALI Lighting Controls
Voice Activated DALI Lighting Controls
Industrial Ether Connectable IoT Sensor Hub
Medical Patch
Arduino Shield Sensor Board
Portable Wi-Fi Controlled RGBW Lighting
Mini-LED TV Backlight Unit - Large Matrix
Cloud Connected Wi-Fi & Bluetooth Low Energy Sensor Hub
Cloud Connected Wi-Fi & Bluetooth® Low Energy Sensor Hub
Portable Health Monitoring Device
Portable Health Monitoring Device

Applications

Documentation

Title
Type 		Date
OB1203 Datasheet
PDF 1.14 MB 		Datasheet
Sensor Software Combination Manual
PDF 2.87 MB 日本語 		Application Note
PLC# : 230010 End-of-Life (EOL) process on select part numbers
PDF 1.11 MB 		End Of Life Notice
RL78 Family Sensor Control Modules Software Integration System Rev.1.50
PDF 1.61 MB 		Application Note
Renesas Sensor Control Modules Firmware Integration Technology Rev.1.70
PDF 1.73 MB 		Application Note
OB1203 Sample application - Sample Code
PDF 4.25 MB 日本語
Related Files:
Application Note
RL78 Family OB1203 Sensor Control Module Software Integration System
PDF 188 KB
Related Files:
Application Note
RL78 Family Sensor I2C Communication Middleware Control Module Software Integration System
PDF 190 KB
Related Files:
Application Note
OB1203 Custom Application Example Code
PDF 649 KB 		Application Note
RX Family Sensor I2C Communication Middleware Control Module Firmware Integration Technology Rev.1.22
PDF 197 KB
Related Files:
Application Note
RX Family OB1203 Sensor Firmware Integration Technology Rev.1.01
PDF 192 KB
Related Files:
Application Note
OB1203 Pulse Oximeter Algorithm for SpO2, Heart Rate, and Respiration Rate
PDF 634 KB 		Application Note
OB1203SD-BT2-EVK Dialog DA14531 Bluetooth Evaluation Kit Example Code
PDF 151 KB 		Application Note
OB1203 Pulse Oximeter Module Electrical, Thermal, and Optical Design Guide
PDF 1.37 MB 		Application Note
Recommended Use of Finger Holder during Reflective PPG Measurements
PDF 187 KB 		Technical Brief
OB1203 Regulatory Certifications
PDF 112 KB 		Guide
OB1203 Heart Rate, Blood Oxygen Concentration, Pulse Oximetry, Proximity, Light and Color Sensor: Sensor Programming
PDF 122 KB 		Application Note
OB1203 - All-in-One Bio and Light Sensor Overview
PDF 1.16 MB 		Overview
OB1203 Heart Rate, Blood Oxygen Concentration, Pulse Oximetry, Proximity, Light and Color Sensor: Proximity Sensing
PDF 213 KB 		Application Note
OB1203 Heart Rate, Blood Oxygen Concentration, Pulse Oximetry, Proximity, Light and Color Sensor: RGB
PDF 599 KB 		Application Note
Add 1 hidden item
20 items

Design & Development

Software & Tools

Software Downloads

Title
Type Date
PLC# : 230010 End-of-Life (EOL) process on select part numbers
PDF 1.11 MB 		End Of Life Notice
Source Code for OB1203 Custom Applications using RA or RL78 Families
ZIP 4.87 MB 		Software & Tools - Evaluation Software
Software for OB1203 Bluetooth Demo
Software & Tools - Other
3 items

Sample Code
Title
Type Date
OB1203 Sample application - Sample Code
[Software=FSP|v4.0.0;RX Driver Package|v1.35],[Toolchains=GNU ARM Embedded|v10.3.1.20210824;CC-RX|v3.02.00;GNURX|8.3.0.202004;CC-RL|v1.10.00;GNURL|4.9.2.202103;]
ZIP 60.68 MB
Application: IoT Applications
Compiler: CC-RL, CC-RX, GNU ARM Embedded, GNURL78, GNURX, ICCARM, ICCRL78, ICCRX Function: Application Example, Communication Interface IDE: e2 studio, IAR EWARM, IAR EWRL78, IAR EWRX
Related Files:
Sample Code
RL78 Family OB1203 Sensor Control Module Software Integration System
ZIP 3.77 MB
Application: IoT Applications
Compiler: CC-RL, CC-RX, ICCRL78 Function: Application Example, Communication Interface, Driver or Library IDE: CS+, e2 studio, IAR EWRL78
Related Files:
Sample Code
RL78 Family Sensor I2C Communication Middleware Control Module Software Integration System
ZIP 3.74 MB
Application: IoT Applications
Function: Application Example, Communication Interface, Driver or Library
Related Files:
Sample Code
RX Family Sensor I2C Communication Middleware Control Module Firmware Integration Technology Rev.1.22 - Sample Code
ZIP 3.48 MB
Application: IoT Applications
Compiler: CC-RX, GNURX, ICCRX Function: Application Example, Communication Interface, Driver or Library IDE: CS+, e2 studio, IAR EWRX
Related Files:
Sample Code
RX Family OB1203 Sensor Firmware Integration Technology Rev.1.01 - Sample Code
ZIP 2.93 MB
Application: Consumer Electronics, Industrial
Compiler: CC-RX, GNURX, ICCRX Function: Analog, Communication Interface, Driver or Library, OS IDE: CS+, e2 studio, IAR EWRX
Related Files:
Sample Code
5 items

Boards & Kits

US082-OB1203EVZ Pmod Board

US082-OB1203EVZ

Evaluation
Order Now

Pulse Oximetry, Proximity, Light, and Color Sensor Pmod™ Board (Renesas Quick-Connect IoT)

The US082-OB1203EVZ board enables quick prototyping of the OB1203 multi-channel light sensor (LS/CS), proximity sensor (PS), and photoplethysmography sensor (PPG) in a...

Featured Documents:
US082-OB1203EVZ Evaluation Board Manual

OB1203SD-BT2-EVK

Evaluation
Order Now

Heart Rate, SpO2 and Respiration Rate Evaluation Kit with Bluetooth® Low Energy

This evaluation kit includes:

Featured Documents:
OB1203SD-BT2-EVK Quick Start Guide

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models
Diagram of ECAD Models

Models

Title
Type Date
OB1203 3D CAD model
STEP 1.10 MB 		Model - Other
1 item

Product Options

    Processing table
    Supply Voltage (V)
    Temp. Grade
    Temp. Range
    Carrier Type
    Buy / Sample
    Part Number
    OB1203SD-C4V
    block_flippedObsolete
    memory
    view_in_ar
    		1.7 - 3.6 I -40 to 85°C Tray
    OB1203SD-C4R
    block_flippedObsolete
    memory
    view_in_ar
    		1.7 - 3.6 I -40 to 85°C Reel
    OB1203LC-C4V
    block_flippedObsolete
    memory
    view_in_ar
    		1.8 - 3.6 I -40 to 85°C Tray
    OB1203LC-C4R
    block_flippedObsolete
    memory
    view_in_ar
    		1.8 - 3.6 I -40 to 85°C Reel
    Parametric Table tips

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    Bio and Light Sensor Module

    A brief introduction to Renesas' biosensor module for heart rate, SpO2 and respiration using the highly integrated OB1203 for reflective photoplethysmography, light and color sensing. With the provided algorithm, the solution can determine heart rate, oxygen saturation (SpO2) and respiration rate. The sensor transmits its data via an I2C interface to an MCU for data analysis and result display. The evaluation kit also incorporates an RL78/G13 16-bit microcontroller, an ISL9111 high-efficiency synchronous boost converter for battery operation and an OLED display.

    Video List
    Bio and Light Sensor Module

    News & Blog Posts

    Bluetooth® 5.0 Enabled Medical Patch Blog Post Jan 20, 2021
    Using the OB1203 for Early Indications of COVID-19 Infections Blog Post Aug 5, 2020
    Is Blood Oxygen Concentration a Leading Indicator of COVID-19? Blog Post May 14, 2020
    IDT Announces Fully Integrated All-In-One Biosensor Module for Mobile and Wearable Devices News Oct 21, 2019