• ADPD4100 Few Questions

    Hi all!

    I'm just getting started with ADPD 4100 and had a few questions based on my read of the datasheet + eval board datasheet.

    1. Hoping to better understand the INP12_x register (pg. 91 on the datasheet). If INP12_x is set to 0111 (IN1 and IN2…

  • ADPD4000 vs ADPD4100

    What are the differences between the ADPD4000 vs the ADPD4100 regarding performance/advantages/features.



  • Reading values from ADPD4000/ADPD4100

    I'm fairly new to ADPD4000 and new in doing embedded tasks.

    If I'm using an arduino nano, how do I read the values from the ADPD4000? How do I connect ADPD4000 to Arduino Nano to be able to do so?

    I have an incoming ADPD4100 but I'd like to take…

  • Q. ADPD4100/ADPD4101 power sequence problem?

    I have a question regarding the ADPD4100/ADPD4101.

    The customer made 6 boards of its own and all used ADPD4101.
    Three ADPD4101s operate normally, but the other three do not.
    (Sometimes it works normally.)

    When ADPD4101 does not operate normally, the…

  • ADPD4100 driving laser diode instead of LEDs


    Can I use laser Diode (LD) instead of LEDs with the ADPD4100?

    If yes, please advise how and if you have an application note on that 


  • ADPD4100 (EVAL-ADPD4100Z-PPG) SPI Configuration Procedure


    I am trying to configure the ADPD4100 registers over SPI. Per the spec sheet, I have been writing to the registers in order one after the other after giving the first register address. However, when I read back one of the register values after writing…

  • what is the default configuration for ADPD4100 Wrist worn PPG for Heart Rate Monitoring?

    Hi. I am using EVAL-ADPD4100Z-PPG for heart rate monitoring.

    Are you able to share an example configuration for heart rate monitoring using ADPD4100 (SPI)?

    It would be a great help and really appreciate it.

  • what is the default configuration for ADPD4100/ADPD4000 Wrist worn PPG for Heart Rate ?

    Hello All,

    I understand that the ADPD4100/ADPD4000 configuration must be defined for each use-case.

    I am using ADPD4100 for a wrist worn heart rate estimation application.

    what is the basic configuration for this?

  • RE: Optical sensor to that triggers on the passing of the spoke of a tiny wheel (10mm wheel, with 1mm width spoke)

    Hi there -

    The challenge for your proposed design is to achieve a narrow LED light beam so that the light is reflected from a single spoke in a reflective measurement or the light passes only one gap between two neighboring spokes in a transmissive setup.…