LVM, was Re: [sdiy] PIC Quantizer project

[john mahoney]

----- Original Message ----- 
From: "Paul Perry" <pfperry at melbpc.org.au>

> >As others have said, filters don't
> > use full-scale signals internally, anyway!
> >
> I'll take bets against that.

I wouldn't do that if I were you. :-) Here's what Harry wrote the
other day:
>
> JH made a point some years ago about using the 'natural' signal
levels
> of the circuits themselves (for example, no filter circuit REALLY
runs
> +/-10V ... internally they are more like 50mV).  That would be OK
> for the 5V logic.

Harry referencing Haible is good enough for me. ;-)


> And, when a filter is swept, you often get HUGE
> overloads.

I don't think that's relevant, though. An amp will overload at 2V if
it's running on a 2V supply.

By the way, a CA3080 can run on as little as +/-2 volts. Perfect for
the LVM!
--
john (deferring to the masters)