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TOPIC: TL972 equivalent / replacement

TL972 equivalent / replacement 9 months 5 days ago #1516

Hi guys. So I've stumbled upon this project but I cannot seem to find a TL972 here in our country *coughs Philippines. And so, I am listing all my options for replacement.

*AD8051
*AD823

Are these OP Amps preferrable?

Please guide me and let me know if it is okay. Thank you very much. :)
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TL972 equivalent / replacement 9 months 1 day ago #1522

  • Ray
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You need a rail-to-rail op amp, that means that the input/output could go very close to the voltage rails without clipping. The only substitute I know is the Microchip MCP6002.
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TL972 equivalent / replacement 2 months 1 week ago #1740

  • gonzalososa095
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Ray wrote:
You need a rail-to-rail op amp, that means that the input/output could go very close to the voltage rails without clipping. The only substitute I know is the Microchip MCP6002.

Hi, i have the same problem getting the tl972. Here, in Argentina, the only rail to rail that i can get its the ad623an, do you know if can works? Thank you. Here is the datasheet:

datasheet
Last Edit: 2 months 1 week ago by gonzalososa095.
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TL972 equivalent / replacement 2 months 1 week ago #1741

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I have been checking the AD623 and electrically looks good, BUT the problem is that this part is a single op-amp (left) and for the circuit, we need a dual op-amp (right), so you cannot use the AD623 as pin-compatible part:

dual.jpg
Last Edit: 2 months 1 week ago by Ray.
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TL972 equivalent / replacement 2 months 1 week ago #1748

  • synesthesia
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Well, I simulated TL072 and TL082 work fine BUT (of course there's always a but) being not rail-to-rail cause the output to clip and often being 0.695v ~ 1v less than power supply.

Solution:
Feed through a small-signal via attenuating guitar signal, then gain up the amp instead... :ampmarshall
Desperate electronics enginner | Passionate audio hobbyist.
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