Description
AFE44I30YZR Texas Instruments - Yeehing Electronics
Ultra-low-power integrated analog front end (AFE) for wearable optical biosensing with FIFO and I2C
Pricing (USD)
| Quantity | Unit Price |
| 1 — 99 | 5.391 |
| 100 — 249 | 4.395 |
| 250 — 999 | 3.454 |
| 1,000 + | 2.05 |
The above prices are for reference only.
Specifications
For more information, please refer to datasheet
Documents
| AFE44I30YZR Datasheet |
More Information
The AFE44I30 is an analog front-end for optical bio-sensing applications, such as heart-rate monitoring (HRM) and saturation of peripheral capillary oxygen (SpO2). The device supports up to six switching light-emitting diodes (LEDs) and up to four photodiodes. Up to 24 signal phases can be defined and the signal can be acquired from each phase in a synchronized manner. The current from the photodiode is converted into voltage by the transimpedance amplifier (TIA) and digitized using an analog-to-digital converter (ADC). The ADC code can be stored in a 128-sample First in, First out (FIFO) block. The FIFO can be read out using a I2C interface. The AFE also has a fully-integrated LED driver with an 8-bit current control. The device has a high dynamic range transmit-and-receive circuitry that helps with the sensing of very small signal levels.
