Re: PCB power planes?

Joerg <notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx> wrote in news:iUvck.14888
$N87.12030@xxxxxxxxxxxxxxxxxxxx:

That would be way out of league for most of my designs.


It depends on how much you need a tunable filter, and how good you need it
to be.

I used to use a bank of these:
http://www.tucker.com/java/jsp/product_partno3202R_invid9608_condR.htm

At $500 per channel used for a 4-pole tunable filter, 4 bucks a channel for
digital pots plus the UAF42 is quite a bargain. Of course, you need to
build your serial bus and then write some code to support it, but still the
bargain.


--
Scott
Reverse name to reply
.

Relevant Pages

  • Re: PCB power planes?
    ... On 8 Jul 2008 13:27:47 GMT, Scott Seidman ... It depends on how much you need a tunable filter, and how good you need it ... digital pots plus the UAF42 is quite a bargain. ... of the DDS chip or dac you're trying to post-filter. ...
    (sci.electronics.design)
  • Re: PCB power planes?
    ... At $500 per channel used for a 4-pole tunable filter, 4 bucks a channel for digital pots plus the UAF42 is quite a bargain. ... I find things to be easier past a couple of MHz because there you can use inductors and PIN diodes. ...
    (sci.electronics.design)
  • Re: Hey, which one of you was it?
    ... > only need $100,000 down, What a bargain! ... Do you work at my bank? ... Laura ...
    (microsoft.public.cert.exam.mcse)