BH1792GLC Optical Sensor for Heart Rate Monitoring

Product Highlights > BH1792GLC Optical Sensor for Heart Rate Monitoring

            BH1792GLC Optical Sensor for Heart Rate Monitoring
                    ROHM's optical sensor features a built-in photodiode with excellent green bandpass and IR cut filters for heart rate monitoring applications
    

Image of ROHM's BH1792GLC Optical Sensor ROHM's BH1792GLC is an optical sensor for heart rate monitoring that includes photodetectors and drivers to power green and IR LEDs. Heart rate is calculated by detecting the amount of green light that is reflected from the body. LED brightness can be adjusted via the LED driver current. The built-in photodiode has high sensitivity to green light, and excellent wavelength selectivity enables accurate pulse wave detection.

Specifications

V_CC voltage range: 2.5 V to 3.6 V
Current consumption: 200 µA (typ.) [LED OFF]
Standby mode current: 0.8 µA (typ.)
Selectable LED output current: 1 mA to 63 mA @ 1 mA steps
Selectable measurement mode: 32 Hz/64 Hz/128 Hz/256 Hz/1024 Hz
Operating temperature range: -20°C to +85°C
Package: WLGA010V28 (2.8 mm x 2.8 mm x 1.0 mm)

Features

Built-in green photodiode with excellent green bandpass and IR cut filters
Integrated IR photodiode detects proximity
High sampling frequency: 1024 Hz
Current selectable LED driver
I²C bus interface (f/s mode support)
Built-in FIFO reduces host power consumption

Applications

Wearables
Smartphones

Tablets
Devices requiring vital sign sensing

BH1792GLC Block Diagram