The Opamp thread

[toear]

hmmm... i just reseated the chip again and seem to getting 'full' volume.... perhaps a bad connection....

Thanks!

 

[raoultrifan]

[...]

Yeah, I guessed it was a little different but there is some positive stuff on other forums. This is what I have ordered...

Nice, could you please indicate the source? eBay perhaps, right?

BTW, from the datasheet I can only see tests/graphs when +/-5V PSU is used, so output voltage is quite low. I was wondering if you could please use this op-amp as output buffer to drive directly the headphones but powere through a PSU of at least +/-12V, if possible. Perhaps into an Objective2 if you have one laying around?

Thank you!

 

[endia]

Yeah, I guessed it was a little different but there is some positive stuff on other forums. This is what I have ordered...

i have a similar one with additional caps.. installed as lpf on my zishan dsd player but didn't find enough time for critical listening..

 

[toear]

Hi all

Hi All

I seem to have a problem. I ordered an opa1692idgkt from Digikey with what I thought was the matching adapter. I thought the opa1692 was a vssop8 but it doesn't fit on the adapter (which is labeled as a vssop8 to dip8 adapter). Is there something else I should be looking at in the ID to match these up?

And... Could anyone tell me which board I need?

Thanks so much!



edited for clarity

 

[Rroff]

Looks like VSSOP 0.5mm and I believe the opamp is VSSOP 0.65mm just to be confusing.

I just use the cheapy SOIC/SSOP (dual sided) to DIP8 adaptors you can find on ebay and Amazon, etc. the ones I've got so far have been the right size.

 

[nesty]

my opa1692 and opa2209 on lbb4.

 

[LaughMoreDaily]

Thanks for your suggestions and sharing your most recent experiences.

I noticed that these ic chips are tiny. My understanding is that I would have to solder them onto some kind adapter so they would work in a dip 8 package?

Also, when ordering, how would I tell which one to order of a particular model. There are a combination of letters following the chip model (e.g. OPA1692AID vs OPA1692AIDR)...more specifically for the Zishan Z2, which I believe is a dual version dip8 configuration...

Also, the nice surprise with these suggestions is that I just put 3 opamps into my Mouser cart and with shipping it was under $30! Much more doable compared to the Burson and Muse options, and I can experiment...

Again much appreciated to ask the responses!

Do you have the links for those opamps? I will buy them too. Burson is too expensive ($70) for me.

 

[toear]

I got mine here...

https://www.digikey.ca/product-detail/en/texas-instruments/OPA1692IDGKT/296-47619-1-ND/8111116

you need a 0.65mm spacing on the adapter.. not 0.5mm... I learned the hard way... still waiting...

 

[toear]

these adapters...

https://www.ebay.ca/itm/273154946269

 

[toear]

Looks like VSSOP 0.5mm and I believe the opamp is VSSOP 0.65mm just to be confusing.

I just use the cheapy SOIC/SSOP (dual sided) to DIP8 adaptors you can find on ebay and Amazon, etc. the ones I've got so far have been the right size.

Thank you!... (I thought I had posted this earlier but hadn't)... much appreciated!

 

[LaughMoreDaily]

I got mine here...

https://www.digikey.ca/product-detail/en/texas-instruments/OPA1692IDGKT/296-47619-1-ND/8111116

you need a 0.65mm spacing on the adapter.. not 0.5mm... I learned the hard way... still waiting...

I'm not sure what you mean about the 0.65 mm spacing. I'm just a newb trying to order it for a Z1.

I don't want to solder anything. I have these adapters: https://www.aliexpress.com/item/10P...s-Adaptor-Solder-Type-Socket/32651679826.html

Will they work?

 

[toear]

I'm not sure what you mean about the 0.65 mm spacing. I'm just a newb trying to order it for a Z1.

I don't want to solder anything. I have these adapters: https://www.aliexpress.com/item/10P...s-Adaptor-Solder-Type-Socket/32651679826.html

Will they work?

Those will only work with dip8 configured opamps. Not necessary as the Z1 already has a socket. The opa1692 is a completely different size and footprint. I'm just a newb at this as well... So if I'm wrong someone else please chime in...

 

[SpudHarris]

Does anyone know what the "SQ" suffix is about on Analogue Devices?

I was searching for the TO99 version of AD712 and Farnell have this SQ version on their site for circa £33 + VAT. I don't know anything about the SQ but assume it means something like 'Superior Quality'?? Anyone have experience or knowledge of this? I love the 712 but not for that sort of cash unless there is a reason... There are several other AD chips with this suffix on Farnell. Colour me curious...

 

[LaughMoreDaily]

Those will only work with dip8 configured opamps. Not necessary as the Z1 already has a socket.

Do you know what to look for to make sure the opamps are DIP8 when they don't look it? (no long legs) I accidentally bought some SOP-8 opamps am wondering if those would work in the right adapter. It looks like we are both new around here.

 

[toear]

I just look for some kind of description that says they are dip 8 or on dip8 adapters . That and I looked at a lot of op amps. You can usually tell if it's in dip 8 configuration. Sorry to be not more helpful...