[sdiy] AS3397 what is it?

[René Schmitz]

You get a current input, and a voltage output.  The impedance is not 0R 
but 800R so you get some voltage wiggle for any current (in or out).

You can pick up the oscillators there, but the amplitude is lower, so 
you need to amplify, and if you want to input something at the same time 
you have to somehow remove that too.


Best,

  René


Am 19.01.2025 um 01:48 schrieb Tom Wiltshire:
> I'm not claiming any kind of deeper insight, but it looks like a virtual ground node to me. E.g. you can mix signals (currents) *in* there, but you can't pick signals *out*.
>
> This is just a guess though.
>
> Tom
>
>> On 19 Jan 2025, at 00:13, Rainer Buchty <rainer at buchty.net> wrote:
>>
>> To those who have deeper insight into the 3397: Is pin 15 just a current input (as named) or, as the schematic overview suggests, also a current output, i.e. could I pick up the oscillator output there pre-filter?
>>
>> Rainer
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