Overview

Description

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.

Features

  • 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

Applications

Documentation

Document title Document type
Type
Date Date
PDF 1.14 MB Datasheet
PDF 2.87 MB 日本語 Application Note
PDF 1.61 MB Application Note
PDF 1.73 MB Application Note
PDF 4.25 MB 日本語 Application Note
PDF 188 KB Application Note
PDF 190 KB Application Note
PDF 649 KB Application Note
PDF 197 KB Application Note
PDF 192 KB Application Note
PDF 634 KB Application Note
PDF 151 KB Application Note
PDF 1.37 MB Application Note
PDF 122 KB Application Note
PDF 213 KB Application Note
PDF 599 KB Application Note
PDF 1.11 MB End Of Life Notice
PDF 112 KB Guide
PDF 1.16 MB Overview
PDF 187 KB Technical Brief
20 items

Design & Development

Software & Tools

Software Downloads

Software title Software type Type Date Date
PDF 1.11 MB End Of Life Notice
ZIP 4.87 MB Software & Tools - Evaluation Software
Software & Tools - Other
3 items

Sample Code

Sample Code

Filters
Title Type Date Date
[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
Sample Code
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
Sample Code
ZIP 3.74 MB
Application: IoT Applications
Function: Application Example, Communication Interface, Driver or Library
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
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
Sample Code
5 items

Boards & Kits

Boards & Kits

Models

Models

Title Type Type Date Date
STEP 1.10 MB Model - Other
1 item
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.