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  • Users: mageta
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  1. mageta

    how to interface a differential op-amp to a single ended output

    I would like to have a regular op-amp (single ended) input driven via differential outputs from a differential op-amp. I assume this will be better than going to a single ended configuration right after the diff op-amp (typical configuration). The question is how to best interface the ad8137 in...
  2. mageta

    coil antenna tx/rx setup

    In the attached file, the transmitter is isolated from the metal tube. The receivers are also isolated from the metal tube, but common to the transmitter. Using a differential mode on the receiver coils, would signals picked-up by the metal tube be rejected by the receivers? Also, would the...
  3. mageta

    transmit and receive tuning question

    hi, i am building a transmitter and receiver using solenoids. there are two frequencies i am using, 2 mhz and 400 khz. the receiver has a photo-mosfet to select between two tuning circuits. the receiver is parallel tuned to minimize energy loss in the tank circuit, which is ac coupled via...
  4. mageta

    how to isolate the output of a high speed buck converter?

    hi, i am trying to isolate the output of a buck converter. the challange is with the current mode sensing of the output. is there a efficient way to do this? it is linear tech's lt3694. i am using a transformer to isolate the secondary (output) where i have a split +/- 7v outputs. i have seen...
  5. mageta

    impedance matching for a log amplifier input

    i am using the ad8302 phase/amplitude comparator with its inputs fed by a band-pass filter output. the reference circuit in the ad8302 datasheet shows a 52.3 ohm shunt to match a 50 ohm system (antenna connection). can the ideal 0 impedance output of the active band-pass filter output allow me...

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