As components I have to buy cost only $10, a few dollars remain to reach oversea free shipping ($45).
usually, you choose opamps according to projects you have in mind. But if you want to have some samples in yours drawers for prototyping, wich references will you order ?
usually, you choose opamps according to projects you have in mind. But if you want to have some samples in yours drawers for prototyping, wich references will you order ?
Last edited:
For general applications I try to always have TL072, NE5534, NE5532, OPA134, OPA2134, OPA551, OPA552 and LM4562 for testing 🙂.
thanks, I added LM4562 (I did not have before) and SA5534 (brother of NE5534) to my order.
when Jason will switch search function on, I will try to recover a thread about good sounding opamp 😉
when Jason will switch search function on, I will try to recover a thread about good sounding opamp 😉
It depends on your area of interest. For example, for me it is useful to have OP27, OP37 (for different precision measurement devices).
I agree with TL071, TL072 - they are universal jellybeans. I can propose LM6172 too, and, possibly AD8066.
You may buy several bipolar electrolytes too (4.7, 10, 22, 47, 100, 220, 470, 1000 uF low voltage ones).
I agree with TL071, TL072 - they are universal jellybeans. I can propose LM6172 too, and, possibly AD8066.
You may buy several bipolar electrolytes too (4.7, 10, 22, 47, 100, 220, 470, 1000 uF low voltage ones).
Last edited:
For 5V operation I'm fond of the AD8656 fully-rail-to-rail, seems to have a good all-round performance and can drive headphones directly even.
General purpose, prototyping and so on ? TL071/72/74 and NE5534/5532.
For "better" projects, the opa1641 family has nicely replaced the opa134 in single, dual and quad when it comes to jfet opamps, unless you absolutely need a pdip package. The opa1656 is another nice jfet opamp with strong current output but it only comes in dual package. When it comes to bjt, the lm4562 is cheap with high performances.
I second Vovk Z's advice: I always get some bipolar when ordering from mouser or the like.
Btw: in many cases, doing a search with google works better than the integrated search function.
For "better" projects, the opa1641 family has nicely replaced the opa134 in single, dual and quad when it comes to jfet opamps, unless you absolutely need a pdip package. The opa1656 is another nice jfet opamp with strong current output but it only comes in dual package. When it comes to bjt, the lm4562 is cheap with high performances.
I second Vovk Z's advice: I always get some bipolar when ordering from mouser or the like.
Btw: in many cases, doing a search with google works better than the integrated search function.
thanks friends for your sharps advices. 
As stated, the aim is to have a little stock to make experimentations without having to wait deliveries and to reach free shipping step. It's also a way to mix purposes from Bfet, bipolars, low voltage...
For specifics uses I will follow designer bom or ask !
I have already TL07x serie in stock so that's why I didn't buy.
Is there a difference between old stock (I have) and new products in terms of sound ?
As stated, the aim is to have a little stock to make experimentations without having to wait deliveries and to reach free shipping step. It's also a way to mix purposes from Bfet, bipolars, low voltage...
For specifics uses I will follow designer bom or ask !
I have already TL07x serie in stock so that's why I didn't buy.
Is there a difference between old stock (I have) and new products in terms of sound ?
why do I need OP27, if I have ne5534 ?
there was a thread about a sticky post but nothing came out. I have caps for decoupling but a link for basic audio input/inter-stage caps is still interesting...
low voltage/rail to rail reference opamps will be usefull for some automotive/battery developments: can merge them with lm386 box.
Already added a tube of lm4562 ! I hate surface mount (for personal projects) but up to 8 pins, I make exceptions for high level caracterics IC 😉
LM4562 is brilliant - it is relatively cheap and have top properties. It is my the most loved opamp. Forum-mates propose some newer ones chips like opa1656, opa1641 because they are made considering EMI, and that's why they often do their job better with EMI sources in the room (WiFi etc).
On top of emi resistance, those new jfet opamps have much improved common mode distortion behavior. You used to pay big money for that (opa627...) but now a opa1641 is cheaper actually than the opa134...