Buffer/unity gain IC that is happy with 5V?

pjanda1 · 3rd February 2010, 04:51 PM

I would like a little buffer that can operate off a USB power supply (5V, I presume I could make it 2.5V-2.5V pretty easily). It would need to output 1V RMS into 6.1K and present a high-ish input impedance (20K+). I will only run it up to 150-200hz, but it will need to have good bass performance.

I've already built a unity gain circuit with a spare OPA2132, and it does what I need. However, I'd like to eliminate one PS if I can, and I've got to have the 5V supply. I would be willing to breadboard any additional circuitry that is required (decoupling caps, etc).

I saw a couple of old threads asking similar questions, but I figured there might be a few new chips out there that folks had experience with.

Paul
Wild Burro Audio Labs - DIY Full Range Speakers

3rd February 2010, 04:51 PM	#1
pjanda1 diyAudio Member Join Date: Jan 2005 Location: The Nebraska Panhandle	Buffer/unity gain IC that is happy with 5V? I would like a little buffer that can operate off a USB power supply (5V, I presume I could make it 2.5V-2.5V pretty easily). It would need to output 1V RMS into 6.1K and present a high-ish input impedance (20K+). I will only run it up to 150-200hz, but it will need to have good bass performance. I've already built a unity gain circuit with a spare OPA2132, and it does what I need. However, I'd like to eliminate one PS if I can, and I've got to have the 5V supply. I would be willing to breadboard any additional circuitry that is required (decoupling caps, etc). I saw a couple of old threads asking similar questions, but I figured there might be a few new chips out there that folks had experience with. Paul Wild Burro Audio Labs - DIY Full Range Speakers

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