[sdiy] overclocking BBDs

[Magnus Danielson]

From: "JH." <jhaible at debitel.net>
Subject: [sdiy] overclocking BBDs
Date: Wed, 2 Aug 2006 01:10:34 +0200
Message-ID: <000501c6b5bf$b4cbe480$0200a8c0 at jhsilent>

Jürgen,

> Is there any experience as to how much various BBD chips can be overclocked?
> 
> Asuming the complementary clock signals are not overlapping (with the
> capacitive
> load of the BBD connected), and not speaking of signal quality - just how
> much
> overclocking can different BBD chips stand without being damaged?
> Is it safe to say there's no danger as long as the chip doesn't get hot?

Like CMOS, it is really simple:

P ~ C*f*V²

C you can't do much about, f you want to raise, V is the supply voltage. So,
if you can't ensure propper cooling, lower the supply voltage.

I don't think you run into any other mechanism of destruction. The transistors
will go into current limitation and you will rather see drop of amplitude
response.

Cheers,
Magnus