BH1790GLC - Documentation

ROHM’s BH1790GLC optical sensor for heart rate monitors is optimized for wearable devices such as smart watches and sports bands. Leveraging analog circuit technology along with optical sensor expertise provides improved sensitivity, allowing high accuracy detection of pulse waves even with low LED brightness. This makes it possible to reduce power consumption by 74%, extending battery life and improving accuracy in environments with high IR presence.

In addition, the ability to detect high quality pulse signals using low VF low brightness LED elements eliminates the need for DC/DC circuits for LED power supply conventionally required, decreasing mounting area by 30% and lightening development load.

* This is a standard-grade product.
For Automotive usage, please contact Sales.

White Paper

Growth of Medical Sensors & Electronic Components Demand Due To Covid-19
This whitepaper examines key considerations and developments for medical wearables and the different parts ROHM provides that are appearing in wearables at a time when accuracy and reliability is more critical than ever.

User's Guide

Evaluation Board User's Manual
BH1790GLC-EVK-001 Usage
Evaluation Board User's Guide
Sensor Evaluation Kit SensorShield-EVK-003 Manual
Shield-EVK-001 Manual
Shield-EVK-001 is a Shield, which connects Arduino and ROHM Sensor Boards. Shield-EVK-001 will be refered to as “SensorShield” on this manual. This User’s Guide is about how to use SensorShield.

Application Note

Software User's Manual
BH1790GLC-EVK-001 Software
Thermal Resistance
The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM’s integrated circuit are described in this application note.
Impedance Characteristics of Bypass Capacitor
This application note focuses on the impedance characteristics of capacitors, and explains cautions for selecting bypass capacitors.