Super cool! I am in fact about to start the same project since I had some TAA300's lying around. Its really good to know that the supply rejection isn't great. I am a bit confused about the datasheet and the numbering. Is the pin numbering shown in the datasheet top-view or bottom-view? Also, do you demo the amplifier in your videos? :))
@killcar5nbike2
3 ай бұрын
Pins are looking at the bottom of the chip with the legs pointing towards you. I should demo the amp actually as the final version had a few changes. I'd recommend a 470 ohm feedback resistor. A 100nf cap right at the pins And a 4.7 Ohm resistor in series with a 100nf cap from output to 0v. I ended up using a 9v regulator after my caps as it was still noisy, it's now dead silent. I also used a 10k in series with the input signal feeding a 1k that goes to 0v with a 15nf cap in parallel with the 1k. Those mods have made the chip super quiet, sound awesome and very stable. I'll do a vid on it to explain it better
@williamschmidt-hansen6311
3 ай бұрын
@@killcar5nbike2 Thank you so much for the detailed answer. I also figured based on the schematic to use a larger feedback resistor. There is no need for me to have that much gain, as I will just be feeding it through RCA. Also the increased feedback factor should help with distortion. Im looking forward to the update video
@killcar5nbike2
3 ай бұрын
@@williamschmidt-hansen6311 Going from the published 47 to 470 should reduce distortion by ~20dB.
Пікірлер: 4
Super cool! I am in fact about to start the same project since I had some TAA300's lying around. Its really good to know that the supply rejection isn't great. I am a bit confused about the datasheet and the numbering. Is the pin numbering shown in the datasheet top-view or bottom-view? Also, do you demo the amplifier in your videos? :))
@killcar5nbike2
3 ай бұрын
Pins are looking at the bottom of the chip with the legs pointing towards you. I should demo the amp actually as the final version had a few changes. I'd recommend a 470 ohm feedback resistor. A 100nf cap right at the pins And a 4.7 Ohm resistor in series with a 100nf cap from output to 0v. I ended up using a 9v regulator after my caps as it was still noisy, it's now dead silent. I also used a 10k in series with the input signal feeding a 1k that goes to 0v with a 15nf cap in parallel with the 1k. Those mods have made the chip super quiet, sound awesome and very stable. I'll do a vid on it to explain it better
@williamschmidt-hansen6311
3 ай бұрын
@@killcar5nbike2 Thank you so much for the detailed answer. I also figured based on the schematic to use a larger feedback resistor. There is no need for me to have that much gain, as I will just be feeding it through RCA. Also the increased feedback factor should help with distortion. Im looking forward to the update video
@killcar5nbike2
3 ай бұрын
@@williamschmidt-hansen6311 Going from the published 47 to 470 should reduce distortion by ~20dB.