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| What is your favorite most versatile op-amp? |
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| exe:
--- Quote from: Gyro on June 02, 2019, 07:09:54 pm ---A parametric search is the only way to do it properly. --- End quote --- I'm yet to see a good parametric search, not to mention across multiple vendors (I don't qualify digikey as good search, but it's a good starting point). Also, many things are not mentioned in datasheets, that's why I'm always interested in more data, measurements and experience about opamps. |
| H713:
Clearly anything less than an original API 2520 will not do. All kidding aside, from an audio standpoint, the good old 5532 is difficult to beat without paying 5-6 times as much, and it is very low noise. |
| Kleinstein:
--- Quote from: exe on June 08, 2019, 09:08:51 am --- --- Quote from: Gyro on June 02, 2019, 07:09:54 pm ---A parametric search is the only way to do it properly. --- End quote --- I'm yet to see a good parametric search, not to mention across multiple vendors (I don't qualify digikey as good search, but it's a good starting point). Also, many things are not mentioned in datasheets, that's why I'm always interested in more data, measurements and experience about opamps. --- End quote --- The parametric search at Ti and AD is not that bad, once one gets used to it. For high end OPs there are not that many more sources to search for. :popcorn: Sometimes it is also the bad sides of some OPs, that a worth to remember. So something like well known cross over distortion of the LM358/LM324, phase reversal when leaving the common mode range or the TLC272, that does not like the input near ground and the output near the negative supply at the same time. I just found out that with the TLE2071 the supply current goes up quite a bit if the output is at the negative saturation >:D. |
| Zero999:
--- Quote from: H713 on June 08, 2019, 03:31:13 pm ---Clearly anything less than an original API 2520 will not do. All kidding aside, from an audio standpoint, the good old 5532 is difficult to beat without paying 5-6 times as much, and it is very low noise. --- End quote --- Some of the parts from New Japan Radio look good, at least on paper, as I haven't tried them. NJM2068, a general purpose but better replacement for the NE5532 and the NJM2122 which is lower noise, but lower voltage. |
| magic:
NJM2068 beats the 5332 on noise, price and power consumption but it's said to be less linear at high frequencies and high gains or with less than a few kΩ load impedance. I think the general consensus is that nothing beats 5534/5532 in every respect at a comparable price. Uncompensated 5534 also has 3x more gain at audio frequencies, 5532 was some 90% of what NJM2068 spec claims. I could swear I've measured NJM2068 too but I can't find the results now. But I have seen those NJM2068 used in some semi-pro soundcards and also stuck them into a Xonar STX in place of the original NJM2114 (JRC's own "improved" 5532) and got barely any difference in RMAA results. I guess that means good enough for undemanding applications. |
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