Plecto
Full Member level 5
Hi. I'm looking for a high-power op-amp. It's going to be used as a headphone amplifier so it needs to be able to output maybe 100mA at close to rail voltage. I've tried both the LM386 and the NE5532. The NE5532 seemed perfect, the only limitation was the output power. The LM386 had power, but I wasn't happy with the pre-set gain of 20. I also didn't like that I needed two chips for stereo and the zobel network on the output. I was more happy with the sound quality of the NE5532 aswell.
So. I wan't a dual op-amp just like the NE5532 only with more current and power output. A high supply voltage is also nice, I would say a minimum of +-10V (so I can safely use 2x9V batteries). An amp that comes with both SOIC-8 and DIP8 would be ideal. Future plans is to use SMD parts for this, but I would love to have a DIP-8 package aswell so I can replace my NE5532 chips.
I have also looked at the TPA6120. This seems absolutely ideal, but I would wan't something thats easier to handle (for now). The TPA6120 seems so fragile when it comes to oscillation, it also can't run from a virtual ground solution and it needs resistors on both the output and input. I feel that I don't know enough about electronics to start tackling this amp just yet, I'm afraid it could start coughing without me beeing able to fix it So an op-amp that doesn't oscillate easly would be best for now.
Edit: I would also like to figure out how I can see how much power an op-amp can output. I can find "short circuit current" in the datasheet, but I doubt this is the one to look for.
So. I wan't a dual op-amp just like the NE5532 only with more current and power output. A high supply voltage is also nice, I would say a minimum of +-10V (so I can safely use 2x9V batteries). An amp that comes with both SOIC-8 and DIP8 would be ideal. Future plans is to use SMD parts for this, but I would love to have a DIP-8 package aswell so I can replace my NE5532 chips.
I have also looked at the TPA6120. This seems absolutely ideal, but I would wan't something thats easier to handle (for now). The TPA6120 seems so fragile when it comes to oscillation, it also can't run from a virtual ground solution and it needs resistors on both the output and input. I feel that I don't know enough about electronics to start tackling this amp just yet, I'm afraid it could start coughing without me beeing able to fix it So an op-amp that doesn't oscillate easly would be best for now.
Edit: I would also like to figure out how I can see how much power an op-amp can output. I can find "short circuit current" in the datasheet, but I doubt this is the one to look for.
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