SBASA24 December   2019 AFE44S30

PRODUCTION DATA.  

  1. 1Features
  2. 2Applications
  3. 3Description
    1.     Device Images
      1.      Simplified Schematic
  4. 4Device and Documentation Support
    1. 4.1 Receiving Notification of Documentation Updates
    2. 4.2 Support Resources
    3. 4.3 Trademarks
    4. 4.4 Electrostatic Discharge Caution
    5. 4.5 Glossary
  5. 5Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
  • YZ|30
Thermal pad, mechanical data (Package|Pins)
Orderable Information

3 Description

The AFE44S30 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 eight 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 SPI 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.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
AFE44S30 DSBGA (30) 2.60 mm × 2.10 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.