• RE: ADUM4221 DT pin connect to 5V(VDDI)

    Hello Patrick,

    If the customer needs a part that allows overlap between the outputs, using the ADuM4221-2 will work. There is no DT pin on the ADuM4221-2.

    If the customer is looking to have the minimal deadtime allowed, Please use the ADuM4221 and set…

  • ADUM4221 DT connect to 5V(VDDI)


               Customer use SI8233 on board. We will use ADUM4221 to replace it. Customer don't use DT function of SI8233 and DT pin connect to 5V(VDDI).

               Could ADUM4221/ADUM4221-1 DT pin connect to pull hign (5V) for direct replacement? Or ADUM4221…

  • ADuM4221 VDD1 series 1.2KΩ resistance


    ADuM4221 VDD1 VIN: Can a 1.2KΩ resistor be connected in series with 5V? 

    Thank you~

  • RE: ADUM4221 comparison to UCC21540

    Hello Patrick,

    The ADuM4221 secondary side supports higher supply voltage as compared to the UCC21540. Also, the CMTI rating of the ADuM4221 is higher than the UCC21540.


  • About ADUM4221/ADUM4121 magnetic isolation and VDD1 power supply

    About ADUM4221/ADUM4121 magnetic isolation and VDD1 power supply

    1.ADUM4221/ADUM4121 is magnetic isolation. In PCB design, it is usually close to the main transformer. Will the transformer and the internal isolation coil of ADUM4221 interfere with each…

  • RE: Can the ground B (GNDB ) of ADuM4221-1 be driven at -4V?


    Thank you for your response.

    1. This is helpful. I wush to know if ADuM4221-1 has a short circuit protection feature like DESAT. This was not mentioned in the datasheet.

    2. I can see that ADuM4221-1 can be oprated in a half bridge configuration. Is…

  • JPEG Processing - 4:2:2 v 4:2:0?

    My JPEG saga continue...

    I am using a BF561 single core to compress a 640x480 YUV 4:2:2 image into JPEG format, employing the ADI JPEG Library tools.  I am getting very poor performance compared with the reference results from the Spec Sheet.  The Spec…

  • ADV7842 4:2:2 DDR mode, ADV7393: Stanag3350 support?  (2)

    Hello Dave,

    I am facing problems with replies to your answer, so I am oppening a new dicussion with the same title.

    Please clarify your answer regarding STANAG support:

    2) As I understand it, this is the same as RS-343A/EIA-343A and none of our parts…

  • LTC6804-2 and LTC6811-2 reference voltage 1 and 2 at 0V.


    I installed 2x LTC6811-2 and then 1x LTC6804-2 on the same board and I don't have any voltage reference output at anytime. The functional diagram in the datasheets shows that VREF1 should be always present as it's generated from V+. VREF2 is not…