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Part Number: THS4524EVM
Hello, I am looking for a solution to add (or subtract, same thing) up to 4 RF frequencies, and I am wondering if THS4524EVM is a good candidates? Would it be possible to cascade, 2 outputs>1 input? Frequencies within 40-100 MHz, Gain 1, input/output 50 Ohm. Could you provide a professional opinion on this? Thanks so much! Dmitri
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In reply to Samir Cherian:
Dear Samir, thank you for your reply. The signals that I'm adding are produced by a DDS board, same ground for all of them. So I suppose they can be called fully differential.
I must confess I prefer an off-the-shelf solution. I have trouble finding an op-amp adder as a standalone product that matches my requirements.
Earlier I found this article discussing the use of differential amplifiers for summing frequencies that discusses some disadvantages of classic op-amp adder, that led me to this THS4524EVM evaluation board. http://electronicdesign.com/analog/high-speed-noninverting-summing-amplifier-operates-220-mhz
Quoting: "The circuit in Figure 1 has many other disadvantages, including low input impedance, different input impedances for positive and negative inputs, narrow bandwidth, and the need for tightly matched resistors."
Should I be concerned with these "disadvantages"? The most concerning part for me is "narrow bandwidth".
Thank you for your help!
In reply to Dmitri Tsyboulski:
I'll try it. Thank you for you time and tips!
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