SBAS832B May   2017  – July 2019 AFE4410

PRODUCTION DATA.  

  1. 1Features
  2. 2Applications
  3. 3Description
    1.     Simplified Block Diagram
  4. 4Revision History
  5. 5Device and Documentation Support
    1. 5.1 Receiving Notification of Documentation Updates
    2. 5.2 Community Resources
    3. 5.3 Trademarks
    4. 5.4 Electrostatic Discharge Caution
    5. 5.5 Glossary
  6. 6Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

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

3 Description

TheAFE4410is an analog front-end for optical biosensing applications, such as heart rate monitoring (HRM). The device supports a maximum of four switching light-emitting diodes (LEDs) and a maximum of three photodiodes (PDs). The electrical 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 is stored in a 128-sample first-in, first-out block (FIFO) with programmable depth. The FIFO can be read out using either an I2C interface or a serial peripheral interface (SPI). The AFE also has a fully integrated LED driver with 8-bit current control. The device has high dynamic range transmit-and-receive circuitry offering a dynamic range of up to 100 dB that enables accurate heart ratesensing. The AFE achieves extremely low current levels by operating an ultralow power (ULP) mode set by using the ENABLE_ULP register bit.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
AFE4410 DSBGA (30) 2.60 mm × 2.10 mm
  1. For all available packages, see the package option addendum at the end of the datasheet.

Simplified Block Diagram

AFE4410 FBD_sbas831.gif