• Behind the Tilted Triangle

    Today’s blog is about a new amplifier from Analog Devices. Amplifiers are pretty special to ADI since they were the first products we ever made, back in 1965. This is reflected in our company logo which features a tilted triangle - the schematic symbol…

  • RE: AD797 supply voltage limits

    Hi Javier,

    Depending on your filter requirements, you can also try the latest ADA4625-1 18MHz GBP, which is perfect for PLL applications. For your +20V (pos supply) and 0V (neg supply), ADA4625-1 will have IVR of +16.5 to 0V.



  • RE: what is the current noise density vs frequency for the ADA4625

    Hi Gerard, 

    See below for the current noise density of the ADA4625:

    Let me know if you need anything else. 



  • ADA4625-1 application without the -VS


    i have used the wizards help to create a design using the ADA4625-1

    my question is - do not have an option for -VS on my board

    if i ground this pin would i get only half the amplification?

    how else would this effect my design?


  • RE: Where can I obtain Keysight ADS simulation model for OP27G OP amp


    The spice model that is on the OP27 product page can still be imported into ADS. It must be noted, though, that we have not tested this on Keysight ADS. We do our best to model them with various simulators in mind, so I would think this should still…

  • RE: ADF4108 loop filter design: using OP27

    Hi Guruditya, 

    The OP27 is not a rail-to-rail input and output part, unlike the OP184. With a single 15V supply, you will get very little input and output range from the amplifier, and this is probably not the best choice for this application. 

    You can…

  • RE: Any integrated Over Voltage Protection (OVP) Op Amp with a large GBP?

    Thanks tony and harry for your replies.

    The frequency of ESU is 300KHz.


    Our device is placed on the head during surgery, which is a little bit far away from defibrillation or ESU. However, ESU affects…

  • RE: HMC439 loop filter op-amp for wide bandwidth PLL

    Hi Anh,

    We've noticed that voltage feedback op amps are sometimes easier to implement active loops with phase frequency detectors like the HMC439 and HMC3716 that output voltage pulses. Next, you need to decide whether or not you want (or need) an op…

  • 2*2 MIMO setup


    Iam interested in implementing a MIMO 2*2 scenario where i will use 2 fpgas (1 as the transmitter and 1 as the receiver) where each one  will be connected with one AD-FMCOMMS3-EBZ.
    So the setup will be :
    FPGA_1 + AD-FMCOMMS3-EBZ_1 =Base stati…

  • ADA4930-2

    There are two filters at the back end of this chip. What are the parameters of each stage? How are the values of these resistors and capacitors calculated?