Optical Sensor SI1144-AAGX-GMR

FOB Reference Price:Get Latest Price
$1.84 - $2.88 / Piece | 10 Piece/Pieces (Min. Order)
Lead Time:
Quantity(Pieces) 1 - 18000 >18000
Est. Time(days) 5 Negotiable
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Quick Details
Place of Origin:
Taiwan, China
Brand Name:
Model Number:
Digital Sensor
Optical sensor
Ray Sensor
Operating Temperature:
-40°C ~ 85°C
Voltage - Supply:
1.71V ~ 3.6V
Output Type:
Supply Ability
Supply Ability:
90000 Piece/Pieces per Month
Packaging & Delivery
Packaging Details
Shenzhen / HK
Picture Example:
Lead Time :
Quantity(Pieces) 1 - 18000 >18000
Est. Time(days) 5 To be negotiated

SI1144-AAGX-GMR / SI1144-AAGX-G / SI1144-AAGX 

Product Description
General Description
Optical Sensor Ambient 525nm I²C 10-TLGA Module
All integrated circuit and electronic component from the largest independent distributor of China   
Optical Heart Rate Sensor Module with I2C Interface  and HR Measurement Software  
The Si1144-AAGX is a low-power, reflectance-based, heart rate  sensor. This optical heart rate sensor module includes an analogto-digital  converter, integrated high-sensitivity photodiodes, host  communications processor, a green high efficiency LED, and  three integrated LED drivers with ninety selectable drive levels.  The Si1144-AAGX offers excellent performance under a wide dynamic  range and a variety of light sources from 525 nm to 940  nm. The Si1144-AAGX devices are provided in a 10-lead 4.9 x  2.85 x 1.2 mm LGA module package and are capable of operation  from 1.71 to 3.6 V over the –40 to +85 °C temperature range.

Products Attributes

Part StatusActive
Proximity DetectionNo
Output TypeI²C
Voltage - Supply1.71V ~ 3.6V
Operating Temperature-40°C ~ 85°C
Mounting TypeSurface Mount
Package / Case10-TLGA Module
Supplier Device Package10-LGA (4.90x2.85)



  • Fully integrated heart rate sensor with ARM code library for extracting HR from the optical sensor data
  • Green LED with lens
  • High-sensitivity photodiode
  • Low-noise analog-to-digital converter and filtering
  • LED drivers
  • Optical blocking
  • Host communications and interrupts
  • Optional Movement compensation uses external accelerometer data
  • Accurate sensing of weak blood flow signals on the wrist
  • Three independent regulated LED drivers
  • Scalable from cost-sensitive single LED systems to high performance three LED systems
  • Programmable from 6 mA to 360 mA each
  • Integrated green LED ideal for wrist based heart rate applications
  • Add up to 2 external LEDs
  • Broad spectral sensitivity supports green through 940 nm LEDs
  • No additional optical blocking required
  • Low power consumption
  • 1.71 to 3.6 V supply voltage
  • 25.6 μs LED “on” time keeps total power consumption duty cycle low without compromising performance or noise immunity
  • < 500 nA standby current
  • Internal and external wake support
  • Built-in voltage supply monitor and power-on reset controller
  • I 2C serial communications
  • Up to 3.4 Mbps data rate
  • Slave mode hardware address decoding (0x5A)



  • Fitness Bands
  • Smart Watches
  • Other Wearables
  • Healthcare
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Company Information

Asco Electronic Group Co. Limited founded in 2005, professional committed to supply products in the  field of the industry electric welding machine , communication , intelligent household , industrial,   control equipment , medical equipment ,auto electronic ,STV/MID , OEM/ODM industry, etc. Engaged in offering all kinds IC of world famous brands.  After years of unremitting efforts, ASCO has become international well-known electronic components distributor, with a large domestic sales network and stable supply channels.

We are totally committed to fully understanding our customers' desired outcomes. We do not assume anything and fully embrace the importance of quality in the broadest sense.Quality is the central pillar around which all of our procedures and working practices are set and implemented. This is reflected in our relentless desire to seek perfection through continuous improvements across the Group.We also understand that no two customers or suppliers are exactly alike. Our approach is to give informed choices, offering group services and commercial solutions that best fit your business model and aspirations.




Packaging & Shipping


1.We will arrange the shipment within 3 working days after the payment reached.

2.We can ship Via your shipping account ( DHL / FedEx / UPS / TNT ), Or ship via our side .

3.We are not responsible for any accidents, delays or other issues that are the responsibility of the shipping service.




Refund & Replacement

1.We provide 30-60 days warranty.

2.If the item you purchase from our store are not of perfected quality, that is they don't work electronically to manufacturers specifications, simply return them to us for replacement or refund.

3.If the items is defective, pls notify us within 3 days of delivery.

4.Any items must be returned in their original condition to qualify for a refund or replacement.

5.The buyer is responsible for all the shipping cost incurre 



Contact Information

Contact person : Apple Lin

Skype : mikehkasco  /  E-mail : mike at hkasco.com /Phone / Whatsapp:008615876852151