• ADPD4100 / ADPD4101 Informations

    Hi There,

    I was checking the datasheet of the ADPD4100 / ADPD4101 and I have some doubts. 

    1.  Is it possible to use a dual wavelength LED with a common anode configuration? We want to use a LED with a RED and IR wavelengths, that of course have a common…

  • Where is the GUI executable for the CN0503 / ADPD4101?

    See the CN0503 GUI QUICK-START GUIDE, at https://wiki.analog.com/_media/resources/eval/user-guides/circuits-from-the-lab/cn0503/cn0503_gui_quick_start_guide.docx

    1. Open the GUI executable by clicking the shortcut to app_cn0503.exe or navigating to ‘/dist…
  • RE: ADPD4101 errata and BPF question

    Hello HarjitS,

    The date code may vary depending on the manufacturing batch. The released part of the ADPD4100/4101 has ChipID 0x02C2. 


    Glen B. 

  • ADPD4100/ADPD4101 Medical grade

    Is ADPD4100/ADPD4101 belonging to Medical grade IC? 

  • RE: How to drive the LED in ADPD4101 sensor?

    Hi Glen,

    I have a query over LED switch on/off.

    I am able to get the Raw PPG of RED and IR LED and I am able to switch (on/off) these two LEDs by using MCU timer peripherals in milliseconds. I am using two timeslot which is A and B and able to read the…

  • Q. ADPD4101 total supply current (max.)


    How much current is required to operate all the functions of ADPD4101?

    The datasheet states that the maximum current is 400mA when multiple LED drivers are used simultaneously.

    It seems that it does not require a large current other than the LED…

  • 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…

  • Question about the problem that ADPD4101 does not operate normally when power-up.

    My client made 6 of them using the parts below.
    -Part No. : ADPD4101BCBZR7
    -Date code: 2016

    After power-up, 3 of them operate normally (addr 0x08, value 0x2c2), but the remaining 3 are read as CHIP_ID (addr 0x08) as 0x0000.

    For reference, My client controlled…

  • ADPD4100/ADPD4101 Integrator chopping SUBTRACT_x and REVERSE_INTEG_x

    Would the bit pattern for these two fields ever be different? If so, why?


  • Q. ADPD4101, The power sequence is changed and the green LED generates a peak noise.

    Hi Glen.

    The circuit was modified so that power is supplied simultaneously according to the power sequence recommended by ADI.

    When the green signal is measured in the changed circuit, peak noise occurs every 25 samples.

    From the FIFO, 25 samples of each…