TL072A or OPA2134 in Remote Volume Control
I am making up a IR High Fidelity Remote Volume Controller design by Tauntek type IRVC2 see here: IRVC2 remote volume control with LCD
it uses TL072A op-amps as buffers in unity gain configuration.
I want to replace these with something a little better such as OPA2134s. I hope someone could please answer my question which is... can I just drop-in the OPA2134s thus replacing the TL072As, without doing any modifications to the circuit? And hopefully, get an improvement in the audio. If any modifications are necessary, suggestions please?
The circuit can be seen if one clicks on the Schematic Diagram link towards the bottom of their webpage.
I am making up a IR High Fidelity Remote Volume Controller design by Tauntek type IRVC2 see here: IRVC2 remote volume control with LCD
it uses TL072A op-amps as buffers in unity gain configuration.
I want to replace these with something a little better such as OPA2134s. I hope someone could please answer my question which is... can I just drop-in the OPA2134s thus replacing the TL072As, without doing any modifications to the circuit? And hopefully, get an improvement in the audio. If any modifications are necessary, suggestions please?
The circuit can be seen if one clicks on the Schematic Diagram link towards the bottom of their webpage.
You can pretty much use whatever you want there... it's an inverting amplifier with nearby decoupling caps and an AC-coupled output. The OPA2132/4 should work fine, as would a 5532 or LM833.
Don't hope for any audible improvements though. Even with the TL072 in place, expected THD levels would be <= 0.002% up to 20 kHz at +20 dBu.
Don't hope for any audible improvements though. Even with the TL072 in place, expected THD levels would be <= 0.002% up to 20 kHz at +20 dBu.
I agree. In a follower, while the opamp be internally compensated so it is unity gain stable, each one will work properly.
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