[sdiy] [OT] LM13700 spotted in commercial product of big Manufacturer

Ben Gebhardt benjamin_gebhardt at yahoo.com
Sun May 15 00:38:12 CEST 2022


Before dsp became ubiquitous, we used to regularly use ne5517s or lm13700 in consumer audio for volume control and limiting circuits .  Used to buy these by the millions.  I’m sure they’re still used by some companies.

> On May 14, 2022, at 3:44 PM, Quincas Moreira via Synth-diy <synth-diy at synth-diy.org> wrote:
> 
> 
> Interesting.
> 
>> On Sat 14 May 2022 at 9:54 Tom Wiltshire <tom at electricdruid.net> wrote:
>> 
>> Because, in DIP form at least, the device has been discontinued. The SMD part will probably stick around, but it's not exactly going to ever be a major seller.
>> 
>>> On 14 May 2022, at 15:13, Quincas Moreira via Synth-diy <synth-diy at synth-diy.org> wrote:
>>> 
>>> I don’t understand… why would the LM13700 not be a wise choice? It’s an excellent OTA used in numerous applications!
>>> 
>>> On Sat 14 May 2022 at 8:54 Steve via Synth-diy <synth-diy at synth-diy.org> wrote:
>>>> Howdy,
>>>> 
>>>> the bassguitar amplifer "Rumble 40" by none less than Fender,
>>>> 
>>>> has, in area D..C / 6..7  on page 1, and others, a LM13700.
>>>> 
>>>> Is that just a not-wise choice, or do they know it won't be buried in
>>>> the ancient parts graveyard for a while?
>>>> 
>>>> Scroll a bit down, to the left, there's a captcha field, after getting
>>>> through it, one can download.
>>>> 
>>>> https://elektrotanya.com/fender_rumble_40_v3_sch.pdf/download.html
>>>> 
>>>> 
>>>> - Steve
>>>> 
>>>> 
>>>> 
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>>> -- 
>>> 	
>>> Quincas Moreira
>>> Director | QMA
>>> mobile:  5534988825
>>> site:  quincasmoreira.com
>>> email:  quincas at gmail.com
>>> 
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>> 
> -- 
> 	
> Quincas Moreira
> Director | QMA
> mobile:  5534988825
> site:  quincasmoreira.com
> email:  quincas at gmail.com
> 
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