BH1790GLC
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Optical Sensor for Heart Rate Monitor |
Established |
2.5 to 3.6 |
1.7 to 3.6 |
200 |
0.8 |
Yes |
Yes |
I²C |
-20 to 85 |
 |
Product Overview BH1790GLC |
ROHM’s BH1790GLC optical sensor for heart rate monitors is optimised for wearable devices such as smart watches and sports bands. Leveraging analogue 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. |
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• Green filter with excellent wavelength selectivity.
• Built-in Ircut Filter.
• LED driver with current selection.
• Correspond to 1.8V I²C Interface. |
WLGA010V28 |
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Contact Willow |
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BH1792GLC
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Optical Sensor for Heart Rate Monitor |
Established |
2.5 to 3.6 |
- |
200 |
0.8 |
Yes |
Yes |
I²C |
-20 to 85 |
 |
Product Overview BH1792GLC |
BH1792GLC is optical sensor for heart rate monitor IC in which LED driver, green light and IR detection photodiode are incorporated. This device drives LED and provides the intensity of light reflected from body. LED brightness can be adjusted by LED driver current. The photodiode having the high sensitivity for green light and excellent wavelength selectivity achieves accurate pulse wave detection. |
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• Build-in green photodiode with excellent wavelength selective green filter and IRcut filter.
• Built-in photodiode for touch detection.
• Correspond to high sampling frequency. (1024Hz)
• LED driver with current selection.
• I²C bus Interface(f/s mode support)
• Built-in FIFO |
WLGA010V28 |
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Contact Willow |
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