BH1790GLC
Optical Sensor for Heart Rate Monitor

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.

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

Product Detail

 
Part Number | BH1790GLC-E2
Status | Recommended
Package | WLGA010V28
Unit Quantity | 3000
Minimum Package Quantity | 3000
Packing Type | Taping
RoHS | Yes

Specifications:

Grade

Standard

Sensor Type

Heart Rate Monitor

Analog Supply Voltage (Min.) [V]

2.5

Analog Supply Voltage (Max.) [V]

3.6

IO Supply Voltage (Min.) [V]

1.7

IO Supply Voltage (Max.) [V]

3.6

Current Consumption [uA]

200.0

Standby Current [µA]

0.8

Red Light Cut

Yes

IR Cut

Yes

I/F

I²C

Operating Temperature (Min.)[°C]

-20

Operating Temperature (Max.)[°C]

85

Package Size [mm]

2.8x2.8(t=1)

Features:

  • Green filter with excellent wavelength selectivity.
  • Built-in Ircut Filter.
  • LED driver with current selection.
  • Correspond to 1.8V I²C Interface.

Evaluation
Board

 
    • Evaluation Board
    • BH1790GLC-EVK-001
    • BH1790GLC-EVK-001 is an evaluation board for optical sensor for heart rate monitor IC BH1790GLC.

  • User's Guide Buy
    • Sensor Shield
    • SensorShield-EVK-003
    • SensorShield-EVK-003 is a Kit, which are included the 8 kinds of Sensor and Shield-EVK-001 which connects Arduino and ROHM Sensor Boards.

  • User's Guide Buy Detail

Design Resources

 

Documents

White Paper

  • Growth of Medical Sensors & Electronic Components Demand Due To Covid-19

User's Guide

  • Evaluation Board User's Manual
  • Evaluation Board User's Guide
  • Shield-EVK-001 Manual

Application Note

  • Software User's Manual

Technical Articles

Schematic Design & Verification

  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • What Is Thermal Design
  • Method for Calculating Junction Temperature from Transient Thermal Resistance Data
  • Thermal Resistance

Packaging & Quality

Manufacturing Data

  • Factory Information

Environmental Data

  • REACH SVHC Non-use Declaration