[sdiy] 2164 overvoltage condition?

[David G Dixon]

The 2164 is very fussy about power connections.  If you only connect one
rail, it dies.  If you fail to connect the ground, it dies.  And it dies
permanently.
 
This is probably why I almost never breadboard.  Once I figure I've got the
circuit right, I just make a PCB.  I prefer the security of soldered
connections, and it's no harder to lay out a PCB than to plan out a
breadboard.  Also, since I typically don't make any layout mistakes, I
usually end up with a usable board straightaway, without all that pesky
breadboarding nonsense.


  _____  

From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of Sean
Ellis
Sent: Monday, June 26, 2017 6:48 PM
To: synth-diy at synth-diy.org
Subject: [sdiy] 2164 overvoltage condition?



I've been breadboarding a filter and oscillator using a single 2164 and I
think I just fried my only 2164 on hand. I have the power supply protected
but accidentally put -12 straight into the input of one amp (the control pin
was at about 2.5V) and suddenly it died. The datasheet specifies the max
ratings to the supply rails so I don't get why it could have (seemingly)
destroyed the chip. Could it maybe have caused excessive heat?




-Sean


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