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Achieve 50 ohm input impedance in amplifier - Page 1
https://www.eevblog.com/forum/beginners/achieve-50-ohm-input-impedance-in-amplifier/
If I want to get a 50 ohm input impedance, I could put a feedback resistor between output and input, as in this circuit: [attachimg=1] As I have understood, applying Miller´s theorem this is equivalent to an impedance of \$Z=\frac{Rf}{1-Av}\$ in parallel with Zin. If the gain Av is negative (inverting amplifier) and I choose Av and Rf conveniently, this Z can be 50 ohm, which …
Buffer amp for 50 ohm line - Amplifiers forum - Amplifiers ...
https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/771586/buffer-amp-for-50-ohm-line
Assuming you want to drive a 50 Ohm load at the end of the cable then indeed an amplifier with high output current would be needed. The BUF634, in conjunction with an op amp would easily drive a 50 Ohm load. The electrometer op amp would be your precision, ultra-low input bias current op amp configured with the BUF634 which would supply the 100 mA output current.
EETimes - It's not just 50 ohms: Some termination tips for ...
https://www.eetimes.com/its-not-just-50-ohms-some-termination-tips-for-differential-and-single-ended-amplifiers/
This is often the case in RF design, where each stage has 50 ohm input and output. If the circuits above drive a 50 ohm load, they need a 50 ohm resistor in series with the op amp output. This will, of course, create a 2:1 voltage divider (-6 dB) with the termination resistor in the subsequent stage.
8 Ohm 50W Audio Amplifier - Plenum Rated (TAA Compliant) | C2G
https://www.cablestogo.com/product/40880/8-ohm-50w-audio-amplifier-plenum-rated-taa-compliant
The 8 Ohm 50W Audio Amplifier is the ideal solution for supporting a sound reinforcement system in a classroom, conference room or other environment that requires installation in a plenum space. This amplifier supplies 50 Watts of power, 25 Watts per channel, and is built to an industry standard 8 Ohm design.
High-Z wideband buffer amp for 50 ohm CRO inputs - …
https://www.eevblog.com/forum/projects/high-z-wideband-buffer-amp-for-50-ohm-cro-inputs/
High-Z wideband buffer amp for 50 ohm CRO inputs. I'd like to use 10:1 10M probes with my Tek 7904 500MHz oscilloscope whose wide-bandwidth vertical plugins sport 50-ohm inputs. I've elected to build a 4-channel buffer amplifier for this purpose. I'm aiming for a bandwidth of at least 250 MHz.
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