[sdiy] PCB op-amp layout - 2x2 or 1x4

[Tom Wiltshire]

I laid out a lot of the Frequency Central boards like you describe, Ove. For this reason, I mostly avoided quad op-amps, since they have the power rails the wrong way around. For boards designed for DIYers, having all the chips the same way around eliminates one more possible screw-up.

Images here:

http://www.frequencycentral.co.uk/?page_id=416


On 30 Oct 2015, at 13:17, Ove Ridé <nitro2k01 at gmail.com> wrote:

> What I've seen on some boards is having all/most ICs lined up in the
> middle of the board and the power traces going between them. Then you
> have separate (sub)circuits on the left and right side. This technique
> is of course especially useful if you have two copies of the same
> circuit on one board, so you can essentially mirror the circuit on
> either side.
> 
> On 29 October 2015 at 17:59, Justin Owen <juzowen at gmail.com> wrote:
>> I guess there's probably not a hard right or wrong answer to this - but, when laying out a tight PCB with a lot of op-amps - do you choose 2x or 4x op-amp packages?
>> 
>> The 2x potentially gives you more placement flexibility - but increases overall parts count, the 4x decreases the part count but potentially leaves less room for routing traces between amps...
>> 
>> ...thoughts on this from experience?
>> 
>> Thanks,
>> 
>> - Justin
>> 
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> 
> 
> -- 
> /Ove
> 
> Blog: <http://blog.gg8.se/>
> 
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