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THS4524EVM

Prodigy 150 points

Replies: 4

Views: 475

The THS4524 data sheet refers only to gains of   1, 2, 5, and 10.  Can we use this amplifier for a gain of 50 or   100? Note, we only need frequencies up to about 20kHz.

What   values of resistors (Reference Table 1) should we use for a gain of 50   or 100?

We need a   differential input and single ended output.  Can we just leave one of   the SMA connectors open on the amplifier output for single ended output?

Ben   Sternberg

University   of Arizona

bkslasi@email.arizona.edu

4 Replies

  • Hi Ben,

    If you are using the evaluation module, see the values at figure-1, its output is single ended

    http://www.ti.com/lit/ug/sbou080/sbou080.pdf

    Regards,

    S.Ganesh

  • In reply to Ganesh Moorthy:

    Thank you for your post.  We are using this Eval board at low frequencies (1 to 10 kHz).  We therefore had to remove the Mini-Circuits transformer and use a direct connection at these frequencies.  Is there any problem with just leaving one side of the differential output circuit open?

    Ben

  • In reply to Ben Sternberg:

    It is better to terminate the other end than leaving it open (For high frequency application, terminate the other end with the characteristic impedance).

  • In reply to Ganesh Moorthy:

    If Possible, use a simple LC balun to transform differential to single ended. It is easy to calculate and implement

    http://www.odyseus.nildram.co.uk/RFMicrowave_Circuits_Files/Balun%20Design.pdf

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