THS4524EVM

Ben Sternberg

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

over 10 years ago

0 Ganesh Moorthy over 10 years ago

TI__Prodigy 550 points

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

0 Ben Sternberg over 10 years ago in reply to Ganesh Moorthy

Prodigy 150 points

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

0 Ganesh Moorthy over 10 years ago in reply to Ben Sternberg

TI__Prodigy 550 points

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

0 Ganesh Moorthy over 10 years ago in reply to Ganesh Moorthy

TI__Prodigy 550 points

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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THS4524EVM