[sdiy] Discrete OTAs - (was - Best CA3280 projects?)

[Lanterman, Aaron]

On Jul 2, 2012, at 3:34 PM, ASSI wrote:

>> I'd be curious to see how you did this, whether you actually used diodes
>> or half a transistor (don't laugh - that's what I've read) and what
>> advantage it got you - if any.

To my knowledge, all diodes you find on chips are "diode-connected" transistors. (Both BJT and MOSFETs).

It also takes a while to get used to seeing some transistors more-or-less intended to act as resistors. Resistors on chips are expensive real-estate-wise and difficult to set precisely.

The chip design space really turns your discrete-on-breadboard intuition upside down.

- Aaron