[sdiy] that LM13-something chip again...

Mike Bryant mbryant at futurehorizons.com
Tue Jun 8 11:29:15 CEST 2021

I've seen them in older movement sensor designs, but I thought the amplifier was now integrated into the sensor itself.

-----Original Message-----
From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of Paul Perry via Synth-diy
Sent: 08 June 2021 06:20
To: kenny at beatkamp.com; synth-diy at synth-diy.org
Subject: Re: [sdiy] that LM13-something chip again...

I've never seen the LM13700 in anything except music/audio - where are they all going??
never found one in random e-waste scavageing, i have a lifetime supply, but that's more a reflection on my age...

paul perry Melb Aust

------ Original Message ------
From: "kenny at beatkamp.com" <kenny at beatkamp.com>
To: "Mike Bryant" <mbryant at futurehorizons.com>
Cc: "Synth-diy" <synth-diy at synth-diy.org>
Sent: 8/06/2021 1:33:56 AM
Subject: Re: [sdiy] that LM13-something chip again...

>This is cozy information. Thank you.
>>  That's always the problem with IC manufacture.  There's probably 
>> 10,000 or  more of these on a wafer, and you usually make 25 wafers 
>> at a time.  You  don't have to test and package them all at the same 
>> time as it's possible  to store processed wafers, but even if they 
>> just package 3 wafers there's  a sudden glut.
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