• Using ADA4891 as SE to Diff amplifier from Piezo sensor


    Is the ADA4891-2 a good candidate to create a SE to Diff amplifier to be used as amplification stage of piezo sensor?


  • About ADA4891 LTSpice Model


    I would like to use ADA4891.

    So, I simulated using LTSpice, but the + side of the output voltage will saturate halfway.

    This IC should be a product of Rail to Rail.
    Is the contents of this model correct?

    Best Regards


  • ADA4891-1W schematic review at ADV7393 DAC output

    ADA4891-1W schematic review at ADV7393 DAC output by Steven.yang@analog.com


    As we discussed, customer would like to apply video buffer amp for 720p YPbPr at ADV7393 output.

    I draw the schematic and the configuration as well in attached file.


  • ADA4981 single 5V supply rail to rail performance question

    I am using the ADA4891 op amp in a single 5V supply configuration as an ADC preamp.  The datasheet indicates rail to rail performance within 50mV of each rail.  I have tested a single ADA4891 unit on a breadboard and have confirmed the datasheet.  However…

  • RE: Full-HD Composite Video Filter Driver


    Thank you for your reply.

    I referred the threads you indicated.

    I think it's required an single-channel video amplifier with integrated 6dB gain, -3dB bandwidth filter of 72MHz and 75ohm output driver for Full-HD Composite, AHD / TVI / CVI analog…

  • RE: Re: ADA4891-1W schematic review at ADV7393 DAC output

    Hi Guenter,

    Sorry, the reply is not activated in EngineerZone. So, I send an email to you.

    The recommended schematic for non-inverting gain has positive and negative power rails on the op-amp.  The reason for this with the op--amp VSS tied to ground…

  • RE: 微信号放大,放大器如何选型啊?

    您好, 您可以考虑以下芯片:



  • RE: Replacement for ada4851-4


    The AD8028 is our widest BW true RRIO dual op amp we have today. If you could provide a little more supply voltage the ADA4891-4 might be of interest to you.



  • RE: How do I map the ADA4841 spice model pins to device actual pins

    If using a text based simulator, you'll need to use the 'X' (subcircuit) component.  IE:

    The syntax is:

    X1 IN+ IN- V+ V- OUT ADA4891

    Where you replace IN+, IN-, etc with the nodes in your circuit.


  • Can the ADA4891-1 be used as a unity gain buffer?

    I was wondering if the ADA4891-1 can be used as a unity gain buffer?  I have a unity gain stable amp on my PCA already but for consolidation of parts and for operating temperature range, I would like use an existing amp I have on my board, the ADA4891-1…