[sdiy] 2164 overvoltage condition?

[rsdio at audiobanshee.com]

With breadboards, there is also the potential for ESD since you're handling wires directly. The human body can generate tens of thousands of Volts and easily fry a chip that's not protected by soldered-in circuit connections.

David's last email is probably describing exactly what happened: (nearly) infinite current input due to lack of a current-limiting resistor in series with the input.

Brian


On Jun 26, 2017, at 9:27 PM, David G Dixon <dixon at mail.ubc.ca> wrote:
> 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: Sean Ellis
>> 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?
>